Results in Engineering最新文献_第6页

Insights into effect of thermal distribution on overall efficiency and effective life span of solar photovoltaic (PV) modules 热分布对太阳能光伏（PV）组件整体效率和有效寿命的影响

IF 7.9 Q1 ENGINEERING, MULTIDISCIPLINARY

Results in Engineering

Pub Date : 2025-12-12 DOI: 10.1016/j.rineng.2025.108540

Uzair Sajjad , Hafiz Muhammad Ali

Solar photovoltaic (PV) systems are a major source of sustainable energy, but despite advances in cell materials, efficiency, and design, significant challenges remain most notably thermal distribution, which strongly affects both performance and lifespan. The uneven temperature distribution, known as nonuniformity, adversely affects PV system performance by causing hotspots, material fatigue, and encapsulant aging. This review assesses the effects of thermal distribution on solar PV modules, emphasizing their energy conversion efficiency, reliability, and durability. Hotspots and thermal stress have profound effects on the module performance and effective life, highlighting the importance of efficient thermal management strategies. The review also explores various thermal management approaches, including cooling systems, phase change materials (PCM), and heat sinks. Additionally, this paper evaluates computational methods like computational fluid dynamics (CFD) and the finite element method (FEM) for analyzing thermal distribution in PV systems. It also examines the application of machine learning techniques for predictive modeling and experimental investigations aimed at mitigating thermal effects on PV modules. Future research should focus on the role of thermal management in optimizing PV system performance and extending system lifespan. This paper also highlights the need for further research into developing cost-effective and sustainable thermal management solutions for PV systems.

太阳能光伏（PV）系统是可持续能源的主要来源，但尽管在电池材料，效率和设计方面取得了进步，但仍然存在重大挑战，最明显的是热分布，这强烈影响了性能和寿命。温度分布不均匀，即不均匀性，会引起热点、材料疲劳和密封剂老化，从而对光伏系统性能产生不利影响。本文评估了热分布对太阳能光伏组件的影响，强调了它们的能量转换效率、可靠性和耐用性。热点和热应力对模块性能和有效寿命有着深远的影响，凸显了高效热管理策略的重要性。该综述还探讨了各种热管理方法，包括冷却系统，相变材料（PCM）和散热器。此外，本文还对计算流体力学（CFD）和有限元法（FEM）等计算方法进行了评价，以分析光伏系统的热分布。它还研究了机器学习技术在预测建模和实验研究中的应用，旨在减轻光伏模块的热效应。未来的研究应集中在热管理在优化光伏系统性能和延长系统寿命中的作用。本文还强调了进一步研究开发光伏系统的成本效益和可持续热管理解决方案的必要性。

{"title":"Insights into effect of thermal distribution on overall efficiency and effective life span of solar photovoltaic (PV) modules","authors":"Uzair Sajjad , Hafiz Muhammad Ali","doi":"10.1016/j.rineng.2025.108540","DOIUrl":"10.1016/j.rineng.2025.108540","url":null,"abstract":"<div><div>Solar photovoltaic (PV) systems are a major source of sustainable energy, but despite advances in cell materials, efficiency, and design, significant challenges remain most notably thermal distribution, which strongly affects both performance and lifespan. The uneven temperature distribution, known as nonuniformity, adversely affects PV system performance by causing hotspots, material fatigue, and encapsulant aging. This review assesses the effects of thermal distribution on solar PV modules, emphasizing their energy conversion efficiency, reliability, and durability. Hotspots and thermal stress have profound effects on the module performance and effective life, highlighting the importance of efficient thermal management strategies. The review also explores various thermal management approaches, including cooling systems, phase change materials (PCM), and heat sinks. Additionally, this paper evaluates computational methods like computational fluid dynamics (CFD) and the finite element method (FEM) for analyzing thermal distribution in PV systems. It also examines the application of machine learning techniques for predictive modeling and experimental investigations aimed at mitigating thermal effects on PV modules. Future research should focus on the role of thermal management in optimizing PV system performance and extending system lifespan. This paper also highlights the need for further research into developing cost-effective and sustainable thermal management solutions for PV systems.</div></div>","PeriodicalId":36919,"journal":{"name":"Results in Engineering","volume":"29 ","pages":"Article 108540"},"PeriodicalIF":7.9,"publicationDate":"2025-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A review on MXene—Carbon, polymer, metal oxide and 2D composites for high performance supercapacitor applications mxe -碳、聚合物、金属氧化物和二维复合材料在高性能超级电容器中的应用综述

IF 7.9 Q1 ENGINEERING, MULTIDISCIPLINARY

Results in Engineering

Pub Date : 2025-12-12 DOI: 10.1016/j.rineng.2025.108720

Sudhana J , Usha Rani M

MXenes have emerged as one of the most powerful electrode materials in the family of supercapacitor electrode material due to their high conductivity, tunable surface chemistry, and layered architecture. Many reviews either focus exclusively on pure MXenes or explore only a limited subset of composite architectures, thus leaving a deficit in developing a unified understanding of these materials. This review summarizes systematically the recent advances in MXene/carbon (330–430 F.g^-1, up to 410 mF.cm^-2, 850 F.cm^-3), MXene/metal oxide(150–950 F.g^-1, 29.46–117.1 Wh.kg^-1, 29.46–117.1 Wh.kg^-1, 86.4–97.2 % - 10,000 stability), MXene/polymer(270–563.8 F.g^-1, 65.6 W.Kg^-1, 4077 Wh.Kg^-1), MXene/2D (1531.2 F.g^-1, 94.1 %-10,000 cycles) and MXene/biopolymer (286.28 F.g^-1, 98 % cycling stability). The results obtained from these composites reveal their broad capabilities and versatility towards applications in flexible electronics, portable electronics, electric vehicles, and grid-level systems. This review aims at consolidating the understanding and providing a forward-looking direction for designing next-generation MXene based supercapacitors. Furthermore, this review facilitates the rapid identification of relevant research content, elucidates the interconnections among existing studies, and highlights the challenges that must be addressed for the future development of MXene materials.

由于其高导电性、可调表面化学性质和分层结构，MXenes已成为超级电容器电极材料家族中最强大的电极材料之一。许多评论要么只关注纯MXenes，要么只探索复合体系结构的有限子集，从而在开发对这些材料的统一理解方面留下了赤字。本文系统综述了MXene/碳（330-430 F.g-1，高达410 f.c m-2, 850 F.cm-3）、MXene/金属氧化物（150-950 F.g-1, 29.46-117.1 Wh）的研究进展。kg- 1,29.46 - 117.1 Wh。kg-1, 86.4 - 97.2% - 10,000稳定度)，MXene/聚合物（270-563.8 F.g-1, 65.6 W）。kg - 1,4077 Wh。MXene/2D （1531.2 F.g-1, 94.1% -10,000循环）和MXene/生物聚合物（286.28 F.g-1, 98%循环稳定性）。从这些复合材料中获得的结果表明，它们在柔性电子产品、便携式电子产品、电动汽车和电网级系统中的应用具有广泛的能力和多功能性。本文旨在为下一代基于MXene的超级电容器的设计提供前瞻性的方向。此外，本综述有助于快速识别相关研究内容，阐明现有研究之间的相互联系，并强调了MXene材料未来发展必须解决的挑战。

{"title":"A review on MXene—Carbon, polymer, metal oxide and 2D composites for high performance supercapacitor applications","authors":"Sudhana J , Usha Rani M","doi":"10.1016/j.rineng.2025.108720","DOIUrl":"10.1016/j.rineng.2025.108720","url":null,"abstract":"<div><div>MXenes have emerged as one of the most powerful electrode materials in the family of supercapacitor electrode material due to their high conductivity, tunable surface chemistry, and layered architecture. Many reviews either focus exclusively on pure MXenes or explore only a limited subset of composite architectures, thus leaving a deficit in developing a unified understanding of these materials. This review summarizes systematically the recent advances in MXene/carbon (330–430 F.g<sup>-1</sup>, up to 410 mF.cm<sup>-2</sup>, 850 F.cm<sup>-3</sup>), MXene/metal oxide(150–950 F.g<sup>-1</sup>, 29.46–117.1 Wh.kg<sup>-1</sup>, 29.46–117.1 Wh.kg<sup>-1</sup>, 86.4–97.2 % - 10,000 stability), MXene/polymer(270–563.8 F.g<sup>-1</sup>, 65.6 W.Kg<sup>-1</sup>, 4077 Wh.Kg<sup>-1</sup>), MXene/2D (1531.2 F.g<sup>-1</sup>, 94.1 %-10,000 cycles) and MXene/biopolymer (286.28 F.g<sup>-1</sup>, 98 % cycling stability). The results obtained from these composites reveal their broad capabilities and versatility towards applications in flexible electronics, portable electronics, electric vehicles, and grid-level systems. This review aims at consolidating the understanding and providing a forward-looking direction for designing next-generation MXene based supercapacitors. Furthermore, this review facilitates the rapid identification of relevant research content, elucidates the interconnections among existing studies, and highlights the challenges that must be addressed for the future development of MXene materials.</div></div>","PeriodicalId":36919,"journal":{"name":"Results in Engineering","volume":"29 ","pages":"Article 108720"},"PeriodicalIF":7.9,"publicationDate":"2025-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solar adsorption cooling systems for off-grid sustainability: Recent advances, design strategies, and future perspectives 离网可持续性太阳能吸附冷却系统：最新进展、设计策略和未来展望

IF 7.9 Q1 ENGINEERING, MULTIDISCIPLINARY

Results in Engineering

Pub Date : 2025-12-12 DOI: 10.1016/j.rineng.2025.108718

Jaymin Patel , Goral Nakum , Pranav Mehta , Zafar Said

The increasing global need for sustainable refrigeration has triggered a quest for Solar Adsorption Refrigeration Systems (SARS) that use solar energy and low-grade heat resources for environmentally sustainable cooling. This review focuses on the potential for SARS, an innovative alternative to traditional vapor-compression systems, to tackle pressing global problems such as energy transformation, global warming, and low-carbon cooling. The review covers an integrated analysis of experimental, simulation, and demonstration studies carried out for the past three decades, reviewing the performance, materials, and economic viability of SARS. Major findings include the importance of regular system maintenance, including solar collector cleaning, adsorbent monitoring, and replacement, for durability and efficient system operation. Among existing pairs, the zeolite 13X-water combination has the highest adsorption properties, heat tolerance, and lifespan for practical use. The major limitations still include low COPs (between 0.2 and 0.6) for low energy conversion, expensive costs, and zeolite degradation in different operation conditions for widespread adoption. The case studies support the electricity-consumption-reducing impacts (no <50 % in arid zones) for the use of SARS for both arid-zone and off-grid cooling, illustrating energy-sustained efficiency and enhanced global adaptability for future possibilities. The emphasis for future studies will continue to address gaps for techno-economic, cycle, and policy-scale support, accentuating further experimental efforts for advanced adsorbents, combination designs, and modeling algorithms to raise scalability and system efficiency for wider adoption. With global innovation, advancement, and supportive global policies, SARS could sustain along the global energy-climate transformation pathway for a sustainable future.

全球对可持续制冷的需求日益增长，引发了对太阳能吸附制冷系统（SARS）的探索，该系统利用太阳能和低品位的热资源进行环境可持续制冷。本文重点介绍了SARS作为传统蒸汽压缩系统的创新替代方案，在解决能源转型、全球变暖和低碳冷却等紧迫的全球问题方面的潜力。该综述综合分析了过去三十年进行的实验、模拟和示范研究，回顾了SARS的性能、材料和经济可行性。主要发现包括定期系统维护的重要性，包括太阳能集热器清洁，吸附剂监测和更换，对于耐久性和有效的系统运行。在现有的沸石对中，沸石13x -水组合具有最高的吸附性能、耐热性和实际使用寿命。主要的限制仍然包括低cop（在0.2到0.6之间），能量转换低，成本昂贵，沸石在不同的操作条件下会降解，难以广泛采用。案例研究支持了在干旱地区和离网冷却中使用SARS减少电力消耗的影响（在干旱地区不超过50%），说明了能源持续效率和对未来可能性的增强全球适应性。未来研究的重点将继续解决技术经济、周期和政策规模支持方面的差距，强调对先进吸附剂、组合设计和建模算法的进一步实验努力，以提高可扩展性和系统效率，以便更广泛地采用。有了全球创新、进步和支持性的全球政策，SARS可以沿着全球能源-气候转型的道路持续下去，走向可持续的未来。

{"title":"Solar adsorption cooling systems for off-grid sustainability: Recent advances, design strategies, and future perspectives","authors":"Jaymin Patel , Goral Nakum , Pranav Mehta , Zafar Said","doi":"10.1016/j.rineng.2025.108718","DOIUrl":"10.1016/j.rineng.2025.108718","url":null,"abstract":"<div><div>The increasing global need for sustainable refrigeration has triggered a quest for Solar Adsorption Refrigeration Systems (SARS) that use solar energy and low-grade heat resources for environmentally sustainable cooling. This review focuses on the potential for SARS, an innovative alternative to traditional vapor-compression systems, to tackle pressing global problems such as energy transformation, global warming, and low-carbon cooling. The review covers an integrated analysis of experimental, simulation, and demonstration studies carried out for the past three decades, reviewing the performance, materials, and economic viability of SARS. Major findings include the importance of regular system maintenance, including solar collector cleaning, adsorbent monitoring, and replacement, for durability and efficient system operation. Among existing pairs, the zeolite 13X-water combination has the highest adsorption properties, heat tolerance, and lifespan for practical use. The major limitations still include low COPs (between 0.2 and 0.6) for low energy conversion, expensive costs, and zeolite degradation in different operation conditions for widespread adoption. The case studies support the electricity-consumption-reducing impacts (no <50 % in arid zones) for the use of SARS for both arid-zone and off-grid cooling, illustrating energy-sustained efficiency and enhanced global adaptability for future possibilities. The emphasis for future studies will continue to address gaps for techno-economic, cycle, and policy-scale support, accentuating further experimental efforts for advanced adsorbents, combination designs, and modeling algorithms to raise scalability and system efficiency for wider adoption. With global innovation, advancement, and supportive global policies, SARS could sustain along the global energy-climate transformation pathway for a sustainable future.</div></div>","PeriodicalId":36919,"journal":{"name":"Results in Engineering","volume":"29 ","pages":"Article 108718"},"PeriodicalIF":7.9,"publicationDate":"2025-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring design configurations of micro heat sink for thermal performance management and heat transfer augmentation 探索微散热器的热性能管理和热传递增强的设计配置

IF 7.9 Q1 ENGINEERING, MULTIDISCIPLINARY

Results in Engineering

Pub Date : 2025-12-08 DOI: 10.1016/j.rineng.2025.108651

Mahmoud S. El-Sebaey , Pranav Mehta , Aissa Atia , Abdullah Alrashidi , Abdullah Alghafis , S. Shanmugan , Syed Noman , Athikesavan Muthu Manokar , A. Johnson Santhosh

The ongoing trend toward miniaturization and increasing power densities in electronic devices has created significant challenges in managing the resulting heat. Overheating in electronic components can lead to performance degradation, reduced efficiency, and even permanent failure. Heat sinks play a vital role in thermal management, ensuring that devices such as CPUs, GPUs, and LEDs operate within safe temperature limits. This review manuscript presents an overview of the latest advancements in heat-sink configurations, heat-transfer enhancement techniques, and advanced optimization strategies for electronic cooling. It highlights key innovations—including microchannels, porous structures, and vortex generators—that contribute to improved thermal performance and energy efficiency. Additionally, the review discusses enhanced geometrical designs and materials, such as pin fins, plate fins, and perforated structures, which help increase heat dissipation while minimizing pressure drop. The study emphasizes how optimized heat-sink designs address challenges related to compactness, reliability, and sustainability, supporting the growing needs of modern technologies. It also serves as a comprehensive reference for engineers and researchers seeking to improve thermal management solutions in electronic systems. Future research is recommended to explore novel configurations and integrate advanced materials for broader applications and enhanced thermal efficiency.

电子器件的小型化趋势和功率密度的不断增加，在管理由此产生的热量方面带来了重大挑战。电子元件过热会导致性能下降，效率降低，甚至永久失效。散热器在热管理中起着至关重要的作用，确保cpu， gpu和led等设备在安全温度范围内工作。这个审查手稿提出了在散热器配置，传热增强技术的最新进展的概述，并为电子冷却先进的优化策略。它强调了关键的创新，包括微通道、多孔结构和涡流发生器，这些都有助于提高热性能和能源效率。此外，该综述还讨论了增强的几何设计和材料，如钉鳍、板鳍和穿孔结构，有助于增加散热，同时最大限度地减少压降。该研究强调了优化的散热器设计如何解决与紧凑性、可靠性和可持续性相关的挑战，以支持日益增长的现代技术需求。它也为寻求改进电子系统热管理解决方案的工程师和研究人员提供了全面的参考。未来的研究建议探索新的结构和集成先进材料，以更广泛的应用和提高热效率。

{"title":"Exploring design configurations of micro heat sink for thermal performance management and heat transfer augmentation","authors":"Mahmoud S. El-Sebaey , Pranav Mehta , Aissa Atia , Abdullah Alrashidi , Abdullah Alghafis , S. Shanmugan , Syed Noman , Athikesavan Muthu Manokar , A. Johnson Santhosh","doi":"10.1016/j.rineng.2025.108651","DOIUrl":"10.1016/j.rineng.2025.108651","url":null,"abstract":"<div><div>The ongoing trend toward miniaturization and increasing power densities in electronic devices has created significant challenges in managing the resulting heat. Overheating in electronic components can lead to performance degradation, reduced efficiency, and even permanent failure. Heat sinks play a vital role in thermal management, ensuring that devices such as CPUs, GPUs, and LEDs operate within safe temperature limits. This review manuscript presents an overview of the latest advancements in heat-sink configurations, heat-transfer enhancement techniques, and advanced optimization strategies for electronic cooling. It highlights key innovations—including microchannels, porous structures, and vortex generators—that contribute to improved thermal performance and energy efficiency. Additionally, the review discusses enhanced geometrical designs and materials, such as pin fins, plate fins, and perforated structures, which help increase heat dissipation while minimizing pressure drop. The study emphasizes how optimized heat-sink designs address challenges related to compactness, reliability, and sustainability, supporting the growing needs of modern technologies. It also serves as a comprehensive reference for engineers and researchers seeking to improve thermal management solutions in electronic systems. Future research is recommended to explore novel configurations and integrate advanced materials for broader applications and enhanced thermal efficiency.</div></div>","PeriodicalId":36919,"journal":{"name":"Results in Engineering","volume":"29 ","pages":"Article 108651"},"PeriodicalIF":7.9,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent insights into g-C3N4 based composites for methylene blue photocatalytic degradation g-C3N4基复合材料光催化降解亚甲基蓝的研究进展

IF 7.9 Q1 ENGINEERING, MULTIDISCIPLINARY

Results in Engineering

Pub Date : 2025-12-06 DOI: 10.1016/j.rineng.2025.108595

Gholam Hossein Shahverdizadeh , Kambiz Seyyedi , Ali Mehrizad , Roghayeh Majdan-Cegincara , Sona Jamshidi , Elnaz Ghasemi , Parvin Gharbani , Maryam Farbodi , Moosa Es'haghi

Industrial dyes, particularly toxic organic compounds like Methylene Blue (MB), pose significant threats to aquatic ecosystems and human health. Among various water treatment strategies, photocatalysis has emerged as a highly efficient and environmentally friendly technique for degrading such pollutants. This process leverages light-responsive materials to initiate redox reactions that break down contaminants. Graphitic carbon nitride (g-C₃N₄), a metal-free polymeric semiconductor, has garnered considerable attention due to its visible light absorption, chemical stability, and tunable electronic properties. Nevertheless, pristine g-C₃N₄ suffers from inadequate light absorption capability, rapid charge recombination and low specific surface area, which restricts its photocatalytic efficiency. To overcome limitations, researchers have extensively explored the development of g-C₃N₄ based composites. These composites integrate g-C₃N₄ with other materials, such as metal, metal oxides, carbon-based materials, or other semiconductors, to create heterostructures with enhanced properties. This review summarizes the latest photocatalytic applications of g-C₃N₄ based nanocomposites toward degradation of MB. The main objective of this study was to evaluate the mechanisms involved and investigate the role of operational parameters. This review ends with kinetics perspective of photocatalytic degradation of MB via g-C₃N₄ based catalysts and several insights on the future avenues in investigating practical applications of photocatalytic degradation of organic pollutants via g-C₃N₄ based catalysts.

工业染料，特别是亚甲基蓝（MB）等有毒有机化合物，对水生生态系统和人类健康构成重大威胁。在各种水处理策略中，光催化已成为一种高效、环保的水处理技术。该工艺利用光响应材料来引发氧化还原反应，从而分解污染物。石墨氮化碳（g-C3N4）是一种无金属聚合物半导体，因其可见光吸收、化学稳定性和可调谐的电子特性而受到广泛关注。然而，原始g-C3N4的光吸收能力不足，电荷重组速度快，比表面积低，限制了其光催化效率。为了克服局限性，研究人员广泛探索了g-C3N4基复合材料的发展。这些复合材料将g-C3N4与其他材料（如金属、金属氧化物、碳基材料或其他半导体）集成在一起，形成具有增强性能的异质结构。本文综述了近年来g-C3N4基纳米复合材料在光催化降解MB方面的最新研究进展，并对其机理和操作参数的影响进行了初步探讨。本文最后综述了g-C3N4基催化剂光催化降解MB的动力学观点，并对g-C3N4基催化剂光催化降解有机污染物的实际应用的未来研究方向进行了展望。

{"title":"Recent insights into g-C3N4 based composites for methylene blue photocatalytic degradation","authors":"Gholam Hossein Shahverdizadeh , Kambiz Seyyedi , Ali Mehrizad , Roghayeh Majdan-Cegincara , Sona Jamshidi , Elnaz Ghasemi , Parvin Gharbani , Maryam Farbodi , Moosa Es'haghi","doi":"10.1016/j.rineng.2025.108595","DOIUrl":"10.1016/j.rineng.2025.108595","url":null,"abstract":"<div><div>Industrial dyes, particularly toxic organic compounds like Methylene Blue (MB), pose significant threats to aquatic ecosystems and human health. Among various water treatment strategies, photocatalysis has emerged as a highly efficient and environmentally friendly technique for degrading such pollutants. This process leverages light-responsive materials to initiate redox reactions that break down contaminants. Graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>), a metal-free polymeric semiconductor, has garnered considerable attention due to its visible light absorption, chemical stability, and tunable electronic properties. Nevertheless, pristine g-C<sub>3</sub>N<sub>4</sub> suffers from inadequate light absorption capability, rapid charge recombination and low specific surface area, which restricts its photocatalytic efficiency. To overcome limitations, researchers have extensively explored the development of g-C<sub>3</sub>N<sub>4</sub> based composites. These composites integrate g-C<sub>3</sub>N<sub>4</sub> with other materials, such as metal, metal oxides, carbon-based materials, or other semiconductors, to create heterostructures with enhanced properties. This review summarizes the latest photocatalytic applications of g-C<sub>3</sub>N<sub>4</sub> based nanocomposites toward degradation of MB. The main objective of this study was to evaluate the mechanisms involved and investigate the role of operational parameters. This review ends with kinetics perspective of photocatalytic degradation of MB via g-C<sub>3</sub>N<sub>4</sub> based catalysts and several insights on the future avenues in investigating practical applications of photocatalytic degradation of organic pollutants via g-C<sub>3</sub>N<sub>4</sub> based catalysts.</div></div>","PeriodicalId":36919,"journal":{"name":"Results in Engineering","volume":"29 ","pages":"Article 108595"},"PeriodicalIF":7.9,"publicationDate":"2025-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A review on selective in-memory computing processors: Potential alternative to AI-driven applications 选择性内存计算处理器：人工智能驱动应用的潜在替代方案综述

IF 7.9 Q1 ENGINEERING, MULTIDISCIPLINARY

Results in Engineering

Pub Date : 2025-12-06 DOI: 10.1016/j.rineng.2025.108460

Mohith V , Sakthivel R

In-memory computing (IMC) is a paradigm-shifting approach to data processing that eliminates the sluggishness of transferring data between memory and processing units. By integrating computation directly within the memory, IMC accelerates performance for data-dominant applications like artificial intelligence (AI), machine learning, big data analytics, and edge computing. This approach exploits the parallelism and proximity of memory elements to achieve lower latency, higher energy efficiency, and greater scalability compared to traditional Von Neumann architectures. Emerging memory technologies, including resistive RAM (ReRAM), phase-change memory (PCM), and spintronic devices, are key enablers of IMC, providing the foundation for non-volatile and densely packed memory arrays capable of performing arithmetic and logic operations. This work highlights the potential of IMC to transform computational paradigms by addressing the memory wall and energy constraints, driving innovation in both hardware design and software optimization to meet the demands of future computing workloads. This paper presents all the Non-Von-Neumann computational paradigm computing concepts, distinct memory devices and the IMC architecture suitable for AI-driven applications. The established outcome based on detailed review and analysis of IMC processors is that the potential alternative for data-dominant applications is In-memory computing due to its capability and efficiency of handling huge data.

内存计算（IMC）是一种数据处理的范式转换方法，它消除了在内存和处理单元之间传输数据的缓慢性。通过将计算直接集成到内存中，IMC可以加速人工智能（AI）、机器学习、大数据分析和边缘计算等数据主导应用的性能。与传统的Von Neumann架构相比，这种方法利用内存元素的并行性和邻近性来实现更低的延迟，更高的能源效率和更大的可扩展性。包括电阻式RAM （ReRAM）、相变存储器（PCM）和自旋电子器件在内的新兴存储技术是IMC的关键推动因素，为能够执行算术和逻辑运算的非易失性和密集封装存储阵列提供了基础。这项工作强调了IMC通过解决内存墙和能源限制来改变计算范式的潜力，推动硬件设计和软件优化的创新，以满足未来计算工作负载的需求。本文介绍了所有非冯-诺伊曼计算范式的计算概念，不同的存储设备和适合人工智能驱动应用的IMC架构。基于对IMC处理器的详细回顾和分析得出的结论是，由于内存计算处理海量数据的能力和效率，数据主导应用的潜在替代方案是内存计算。

{"title":"A review on selective in-memory computing processors: Potential alternative to AI-driven applications","authors":"Mohith V , Sakthivel R","doi":"10.1016/j.rineng.2025.108460","DOIUrl":"10.1016/j.rineng.2025.108460","url":null,"abstract":"<div><div>In-memory computing (IMC) is a paradigm-shifting approach to data processing that eliminates the sluggishness of transferring data between memory and processing units. By integrating computation directly within the memory, IMC accelerates performance for data-dominant applications like artificial intelligence (AI), machine learning, big data analytics, and edge computing. This approach exploits the parallelism and proximity of memory elements to achieve lower latency, higher energy efficiency, and greater scalability compared to traditional Von Neumann architectures. Emerging memory technologies, including resistive RAM (ReRAM), phase-change memory (PCM), and spintronic devices, are key enablers of IMC, providing the foundation for non-volatile and densely packed memory arrays capable of performing arithmetic and logic operations. This work highlights the potential of IMC to transform computational paradigms by addressing the memory wall and energy constraints, driving innovation in both hardware design and software optimization to meet the demands of future computing workloads. This paper presents all the Non-Von-Neumann computational paradigm computing concepts, distinct memory devices and the IMC architecture suitable for AI-driven applications. The established outcome based on detailed review and analysis of IMC processors is that the potential alternative for data-dominant applications is In-memory computing due to its capability and efficiency of handling huge data.</div></div>","PeriodicalId":36919,"journal":{"name":"Results in Engineering","volume":"29 ","pages":"Article 108460"},"PeriodicalIF":7.9,"publicationDate":"2025-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145737744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Magnetorheology of Carreau–Yasuda fluid driven by ciliary–flagellar mechanisms in curved porous media: Applications in drug delivery and biomedical microfluidics 弯曲多孔介质中纤毛鞭毛驱动的carau - yasuda流体的磁流变：在药物传递和生物医学微流体中的应用

IF 7.9 Q1 ENGINEERING, MULTIDISCIPLINARY

Results in Engineering

Pub Date : 2025-12-05 DOI: 10.1016/j.rineng.2025.108324

Maryiam Javed , N. Ibrahim , N. Imran , Lemessa Asefa Eressa

This study investigates the peristaltic transport of a Carreau–Yasuda non-Newtonian fluid through a curved porous channel with ciliated walls under the influence of a radial magnetic field. The mathematical formulation is developed in a curvilinear coordinate system to accurately capture the channel’s geometry, while cilia-driven wall motion is represented by a composite waveform of primary and secondary sinusoidal components. The governing equations, incorporating electromagnetic effects via Maxwell’s equations and Ohm’s law together with the Darcy–Brinkman model for porous resistance, are simplified under the assumptions of long wavelength and creeping flow. The resulting fourth-order nonlinear differential equations are solved numerically using MATLAB’s bvp4c solver. The computational results demonstrate that increasing the power-law index and viscosity parameter enhances the pressure gradient while suppressing velocity, whereas higher Weissenberg and Darcy numbers lower flow resistance and reduce pressure rise. The Hartmann number induces magnetic damping, decreasing velocity and elevating pumping pressure. Streamline analysis further reveals the formation of pronounced trapping zones that intensify with increasing elasticity and curvature. These findings provide important insights into the magnetorheological control of non-Newtonian biofluids and have direct implications for biomedical applications such as targeted drug delivery, artificial cilia-based microfluidic pumping, and the design of smart biomedical devices operating in porous and curved environments.

本文研究了径向磁场作用下，carau - yasuda非牛顿流体在具有纤毛壁的弯曲多孔通道中的蠕动输运。数学公式在曲线坐标系中开发，以准确捕获通道的几何形状，而纤毛驱动的壁面运动由初级和次级正弦分量的复合波形表示。在长波长和蠕变流的假设下，通过麦克斯韦方程和欧姆定律将电磁效应与多孔阻力的Darcy-Brinkman模型相结合，对控制方程进行了简化。利用MATLAB的bvp4c求解器对得到的四阶非线性微分方程进行了数值求解。计算结果表明，幂律指数和粘度参数的增大增大了压力梯度，抑制了流速，而较高的Weissenberg数和Darcy数降低了流动阻力，减小了压力上升。哈特曼数引起磁阻尼、速度降低和泵压升高。流线分析进一步揭示了明显圈闭带的形成，这些圈闭带随着弹性和曲率的增加而加剧。这些发现为非牛顿生物流体的磁流变控制提供了重要的见解，并对生物医学应用具有直接意义，例如靶向药物输送，人工基于纤毛的微流体泵送，以及在多孔和弯曲环境中操作的智能生物医学设备的设计。

{"title":"Magnetorheology of Carreau–Yasuda fluid driven by ciliary–flagellar mechanisms in curved porous media: Applications in drug delivery and biomedical microfluidics","authors":"Maryiam Javed , N. Ibrahim , N. Imran , Lemessa Asefa Eressa","doi":"10.1016/j.rineng.2025.108324","DOIUrl":"10.1016/j.rineng.2025.108324","url":null,"abstract":"<div><div>This study investigates the peristaltic transport of a Carreau–Yasuda non-Newtonian fluid through a curved porous channel with ciliated walls under the influence of a radial magnetic field. The mathematical formulation is developed in a curvilinear coordinate system to accurately capture the channel’s geometry, while cilia-driven wall motion is represented by a composite waveform of primary and secondary sinusoidal components. The governing equations, incorporating electromagnetic effects via Maxwell’s equations and Ohm’s law together with the Darcy–Brinkman model for porous resistance, are simplified under the assumptions of long wavelength and creeping flow. The resulting fourth-order nonlinear differential equations are solved numerically using MATLAB’s bvp4c solver. The computational results demonstrate that increasing the power-law index and viscosity parameter enhances the pressure gradient while suppressing velocity, whereas higher Weissenberg and Darcy numbers lower flow resistance and reduce pressure rise. The Hartmann number induces magnetic damping, decreasing velocity and elevating pumping pressure. Streamline analysis further reveals the formation of pronounced trapping zones that intensify with increasing elasticity and curvature. These findings provide important insights into the magnetorheological control of non-Newtonian biofluids and have direct implications for biomedical applications such as targeted drug delivery, artificial cilia-based microfluidic pumping, and the design of smart biomedical devices operating in porous and curved environments.</div></div>","PeriodicalId":36919,"journal":{"name":"Results in Engineering","volume":"29 ","pages":"Article 108324"},"PeriodicalIF":7.9,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design strategies and innovations in compliant mechanism-based energy harvesting: A comprehensive review 基于柔性机制的能量收集设计策略与创新：综述

IF 7.9 Q1 ENGINEERING, MULTIDISCIPLINARY

Results in Engineering

Pub Date : 2025-12-05 DOI: 10.1016/j.rineng.2025.108607

Asan G. A Muthalif , Mohammad Farhan , Issam Bahadur

The growing demand for sustainable, portable, and self-powered devices has accelerated research in vibration energy harvesting (VEH) technologies. VEH provides an efficient means of converting ambient mechanical vibrations into electrical energy, offering a viable power source for low-energy electronic systems, especially in remote or maintenance-free environments. Among various design paradigms, compliant mechanisms have emerged as a promising approach to enhance VEH performance. By exploiting structural flexibility, these mechanisms enable vibration amplification, motion rectification, and reduced mechanical losses, thereby improving energy conversion efficiency even under low-frequency excitations commonly encountered in ambient settings. This comprehensive review focuses on design strategies and innovations in compliant mechanism-based VEH systems. It systematically discusses recent developments across different transduction mechanisms, including piezoelectric, electromagnetic, triboelectric, and hybrid systems integrated with compliant structures. Key design concepts, including resonance tuning, multi-modal excitation, motion amplification, and structural optimization, are analyzed in detail. Furthermore, the review identifies emerging trends in integrating compliant VEH designs with advanced applications, including structural health monitoring, wearable electronics, biomedical implants, and Internet of Things (IoT) devices. By synthesizing recent innovations and highlighting design-oriented insights, this review provides a unified understanding of compliant mechanism-based VEH systems and outlines future directions for achieving higher efficiency, adaptability, and scalability in next-generation energy harvesters.

对可持续、便携和自供电设备的需求不断增长，加速了振动能量收集（VEH）技术的研究。VEH提供了一种将环境机械振动转化为电能的有效方法，为低能耗电子系统提供了可行的电源，特别是在远程或免维护的环境中。在各种设计范式中，柔性机制已经成为一种很有前途的方法来提高VEH的性能。通过利用结构的灵活性，这些机构可以实现振动放大、运动校正和减少机械损耗，从而提高能量转换效率，即使在环境设置中经常遇到的低频激励下也是如此。这篇综合综述的重点是基于柔性机制的VEH系统的设计策略和创新。它系统地讨论了不同转导机制的最新发展，包括压电、电磁、摩擦电和与柔性结构集成的混合系统。详细分析了谐振调谐、多模态激励、运动放大和结构优化等关键设计概念。此外，该综述还确定了将合规VEH设计与先进应用（包括结构健康监测、可穿戴电子设备、生物医学植入物和物联网（IoT）设备）集成的新兴趋势。通过综合最近的创新和突出以设计为导向的见解，本综述提供了对基于兼容机制的VEH系统的统一理解，并概述了下一代能源收集器实现更高效率、适应性和可扩展性的未来方向。

{"title":"Design strategies and innovations in compliant mechanism-based energy harvesting: A comprehensive review","authors":"Asan G. A Muthalif , Mohammad Farhan , Issam Bahadur","doi":"10.1016/j.rineng.2025.108607","DOIUrl":"10.1016/j.rineng.2025.108607","url":null,"abstract":"<div><div>The growing demand for sustainable, portable, and self-powered devices has accelerated research in vibration energy harvesting (VEH) technologies. VEH provides an efficient means of converting ambient mechanical vibrations into electrical energy, offering a viable power source for low-energy electronic systems, especially in remote or maintenance-free environments. Among various design paradigms, compliant mechanisms have emerged as a promising approach to enhance VEH performance. By exploiting structural flexibility, these mechanisms enable vibration amplification, motion rectification, and reduced mechanical losses, thereby improving energy conversion efficiency even under low-frequency excitations commonly encountered in ambient settings. This comprehensive review focuses on design strategies and innovations in compliant mechanism-based VEH systems. It systematically discusses recent developments across different transduction mechanisms, including piezoelectric, electromagnetic, triboelectric, and hybrid systems integrated with compliant structures. Key design concepts, including resonance tuning, multi-modal excitation, motion amplification, and structural optimization, are analyzed in detail. Furthermore, the review identifies emerging trends in integrating compliant VEH designs with advanced applications, including structural health monitoring, wearable electronics, biomedical implants, and Internet of Things (IoT) devices. By synthesizing recent innovations and highlighting design-oriented insights, this review provides a unified understanding of compliant mechanism-based VEH systems and outlines future directions for achieving higher efficiency, adaptability, and scalability in next-generation energy harvesters.</div></div>","PeriodicalId":36919,"journal":{"name":"Results in Engineering","volume":"29 ","pages":"Article 108607"},"PeriodicalIF":7.9,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145737745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Shadow-assisted solar still: Surface cooling via sub-basin heat exchanger 阴影辅助太阳能蒸馏器：通过次盆式热交换器进行表面冷却

IF 7.9 Q1 ENGINEERING, MULTIDISCIPLINARY

Results in Engineering

Pub Date : 2025-12-03 DOI: 10.1016/j.rineng.2025.108508

Duaa Alaa Lafta, Alaa M. lafta, Sajad W. Noori, Mustafa M. Mansour

Solar driven desalination has attracted significant attention amid the continuous demand of sustainable and low-cost freshwater production. In the present work, a Shadow Assisted Solar Still (SASS) is proposed to be integrated with a sub-basin heat exchanger to enhance the operation of open system evaporation condensing. Controlled surface shading is employed in the system to prevent high temperature rise in the basin water which serves to reduce heat losses and promote evaporation stability. At the same time, sub-basin heat exchanger helps to cool the surface and accelerate condensation process by stabilizing higher temperature gradient of water surface against glass cover. Results of experimental and/or theoretical studies indicate that besides increasing the quantity of freshwater produced, this double-effect contributes to its thermal performance compared with single-basin solar stills. In such arid and semi-arid regions with the scarcity of clean water supply, the proposed design is an economic and environment-friendly option to produce freshwater. The design freedom of a shadow-assisted solar still added with a sub-basin heat exchanger was found to improve the system productivity compared to the reference configuration. Surface shading decreased the BWT from peak solar hours towards intermittent heating periods, which caused a reduction in heat losses and an enhancement of condensation productivity. Concurrently, the thermal gradient was induced across the sub-basin heat exchanger to boost evaporation–condensation cycle. Consequently, there was a 40–60 % increase in the daily freshwater product at about performance ratio between 1.4 and 1.6 compared with those of the conventional still day yield. In addition, the thermal efficiency of the system was increased with increasing overall TES depth (Thermal Energy Storage Depth, The effective thickness of the thermal energy storage medium participating in heat storage and release) by enhanced usage of latent heat and less heat loss to the water from its surface. These enhancements indicate that a combination of surface cooling (solar shading) and inside heat recycling (sub-basin exchange) is beneficial to increase the productivity of the solar still at high temperatures.

在对可持续和低成本淡水生产的持续需求中，太阳能驱动的海水淡化引起了极大的关注。在本工作中，提出了一个阴影辅助太阳能蒸馏器（SASS）与一个亚盆换热器集成，以提高开式系统蒸发冷凝的运行。系统采用可控表面遮阳，防止流域水温度升高，减少热损失，促进蒸发稳定性。同时，分盆式换热器通过稳定水面相对于玻璃罩较高的温度梯度，起到冷却表面和加速冷凝过程的作用。实验和/或理论研究结果表明，与单盆太阳能蒸馏器相比，这种双重效应除了增加淡水产量外，还有助于提高其热性能。在这种干旱和半干旱地区，清洁水供应稀缺，建议的设计是一种经济和环境友好的淡水生产选择。与参考配置相比，添加亚盆式热交换器的阴影辅助太阳能蒸馏器的设计自由度提高了系统的生产率。地表遮阳减少了从高峰日照时间到间歇加热期的BWT，这减少了热损失，提高了冷凝效率。同时，在亚盆式换热器上诱导热梯度，促进蒸发-冷凝循环。结果表明，与常规静止日产量相比，日淡水产量以1.4 ~ 1.6的性能比增加了40 ~ 60%。此外，系统的热效率随着总TES深度（热存储深度，参与蓄热和释放热量的热存储介质的有效厚度）的增加而增加，因为潜热的利用增加，水从其表面损失的热量减少。这些增强表明，表面冷却（遮阳）和内部热循环（次盆地交换）的结合有利于提高高温下太阳能still的生产力。

{"title":"Shadow-assisted solar still: Surface cooling via sub-basin heat exchanger","authors":"Duaa Alaa Lafta, Alaa M. lafta, Sajad W. Noori, Mustafa M. Mansour","doi":"10.1016/j.rineng.2025.108508","DOIUrl":"10.1016/j.rineng.2025.108508","url":null,"abstract":"<div><div>Solar driven desalination has attracted significant attention amid the continuous demand of sustainable and low-cost freshwater production. In the present work, a Shadow Assisted Solar Still (SASS) is proposed to be integrated with a sub-basin heat exchanger to enhance the operation of open system evaporation condensing. Controlled surface shading is employed in the system to prevent high temperature rise in the basin water which serves to reduce heat losses and promote evaporation stability. At the same time, sub-basin heat exchanger helps to cool the surface and accelerate condensation process by stabilizing higher temperature gradient of water surface against glass cover. Results of experimental and/or theoretical studies indicate that besides increasing the quantity of freshwater produced, this double-effect contributes to its thermal performance compared with single-basin solar stills. In such arid and semi-arid regions with the scarcity of clean water supply, the proposed design is an economic and environment-friendly option to produce freshwater. The design freedom of a shadow-assisted solar still added with a sub-basin heat exchanger was found to improve the system productivity compared to the reference configuration. Surface shading decreased the BWT from peak solar hours towards <em>intermittent heating periods</em>, which caused a reduction in heat losses and an enhancement of condensation productivity. Concurrently, the thermal gradient was induced across the sub-basin heat exchanger to boost evaporation–condensation cycle. Consequently, there was a 40–60 % increase in the daily freshwater product at about performance ratio between 1.4 and 1.6 compared with those of the conventional still day yield. In addition, the thermal efficiency of the system was increased with increasing overall TES depth (Thermal Energy Storage Depth, The effective thickness of the thermal energy storage medium participating in heat storage and release) by enhanced usage of latent heat and less heat loss to the water from its surface. These enhancements indicate that a combination of surface cooling (solar shading) and inside heat recycling (sub-basin exchange) is beneficial to increase the productivity of the solar still at high temperatures.</div></div>","PeriodicalId":36919,"journal":{"name":"Results in Engineering","volume":"29 ","pages":"Article 108508"},"PeriodicalIF":7.9,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cistus albidus L. cellulose-based bioadsorbent: An innovative eco-friendly method for removing basic fuchsin dye from water solutions and DFT mechanistic insights 以纤维素为基础的生物吸附剂：一种从水溶液中去除碱性品红染料的创新环保方法和DFT机制的见解

IF 7.9 Q1 ENGINEERING, MULTIDISCIPLINARY

Results in Engineering

Pub Date : 2025-12-03 DOI: 10.1016/j.rineng.2025.108562

Khalida Dahmani , Aida Zaabar , Aghilas Brahmi , Hakim Lounici , Abderrahim Benabbas , Ahmed Belaadi , Herbert Mukalazi , Djamel Ghernaout

Synthetic dyes are widely used in various industries, but the discharge of dye-contaminated effluents poses significant environmental and health hazards due to the persistence and toxicity of many dyes. Traditional remediation methods often face challenges regarding cost, efficiency, and environmental impact. This study introduces a novel, unmodified bioadsorbent derived from the powdered leaves of Cistus albidus L. (CSP) for the removal of Basic Fuchsin (BF) dye from aqueous solutions. The bioadsorbent was characterized using scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) analysis, revealing a well-structured mesoporous architecture with a surface area of 10.93 m²/g. Under optimal conditions (21°C, pH 10, initial BF concentration of 100 mg/L, contact time of 60 minutes, and a CSP dose of 5 g/L), the maximum adsorption capacity for BF dye reached 12.01 mg/g, demonstrating competitive efficiency relative to other plant-based adsorbents.

The adsorption process was best described by the Freundlich isotherm model and pseudo-second-order kinetics, indicating multilayer adsorption on a heterogeneous surface. Density Functional Theory (DFT) calculations revealed that BF dye adsorbs onto the cellulose structure of CSP (R-CSP), with an interaction energy of

E_{I n t e r a c t i o n}

= − 0.13 eV, confirming that the adsorption is thermodynamically favorable and exothermic. This energy therefore yields

E_{b i n d i n g}

= 0.13 eV indicates a stable configuration for the R-CSP-BF complex. Furthermore, Non-Covalent Interaction (NCI) analysis highlighted the critical roles of hydrogen bonding and van der Waals forces in the adsorption of BF dye. These results underscore the potential of CSP as an effective and environmentally friendly bioadsorbent for removing dyes from wastewater.

合成染料广泛应用于各种工业，但由于许多染料的持久性和毒性，染料污染废水的排放对环境和健康造成了重大危害。传统的修复方法经常面临成本、效率和环境影响方面的挑战。介绍了一种新型的、未经改性的生物吸附剂，用于去除碱性品红（BF）染料。采用扫描电镜（SEM）和BET （brunauer - emmet - teller）对该生物吸附剂进行了表征，发现其具有结构良好的介孔结构，比表面积为10.93 m²/g。在最佳条件下（21°C, pH 10，初始BF浓度为100 mg/L，接触时间为60分钟，CSP剂量为5 g/L）， BF染料的最大吸附量达到12.01 mg/g，与其他植物基吸附剂相比具有竞争力。Freundlich等温线模型和拟二级动力学最能描述吸附过程，表明在非均质表面上有多层吸附。密度泛函理论（DFT）计算表明，BF染料吸附在纤维素结构的CSP （R-CSP）上，相互作用能EInteraction= - 0.13 eV，证实了吸附是热力学有利的和放热的。因此该能量产生Ebinding= 0.13 eV，表明R-CSP-BF配合物的稳定构型。此外，非共价相互作用（NCI）分析强调了氢键和范德华力在BF染料吸附中的关键作用。这些结果强调了CSP作为一种有效的环境友好型生物吸附剂从废水中去除染料的潜力。

{"title":"Cistus albidus L. cellulose-based bioadsorbent: An innovative eco-friendly method for removing basic fuchsin dye from water solutions and DFT mechanistic insights","authors":"Khalida Dahmani , Aida Zaabar , Aghilas Brahmi , Hakim Lounici , Abderrahim Benabbas , Ahmed Belaadi , Herbert Mukalazi , Djamel Ghernaout","doi":"10.1016/j.rineng.2025.108562","DOIUrl":"10.1016/j.rineng.2025.108562","url":null,"abstract":"<div><div>Synthetic dyes are widely used in various industries, but the discharge of dye-contaminated effluents poses significant environmental and health hazards due to the persistence and toxicity of many dyes. Traditional remediation methods often face challenges regarding cost, efficiency, and environmental impact. This study introduces a novel, unmodified bioadsorbent derived from the powdered leaves of <em>Cistus albidus L</em>. (CSP) for the removal of Basic Fuchsin (BF) dye from aqueous solutions. The bioadsorbent was characterized using scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) analysis, revealing a well-structured mesoporous architecture with a surface area of 10.93 m²/g. Under optimal conditions (21°C, pH 10, initial BF concentration of 100 mg/L, contact time of 60 minutes, and a CSP dose of 5 g/L), the maximum adsorption capacity for BF dye reached 12.01 mg/g, demonstrating competitive efficiency relative to other plant-based adsorbents.</div><div>The adsorption process was best described by the Freundlich isotherm model and pseudo-second-order kinetics, indicating multilayer adsorption on a heterogeneous surface. Density Functional Theory (DFT) calculations revealed that BF dye adsorbs onto the cellulose structure of CSP (R-CSP), with an interaction energy of <span><math><msub><mi>E</mi><mrow><mi>I</mi><mi>n</mi><mi>t</mi><mi>e</mi><mi>r</mi><mi>a</mi><mi>c</mi><mi>t</mi><mi>i</mi><mi>o</mi><mi>n</mi><mspace></mspace></mrow></msub></math></span>= − 0.13 eV, confirming that the adsorption is thermodynamically favorable and exothermic. This energy therefore yields <span><math><msub><mi>E</mi><mrow><mi>b</mi><mi>i</mi><mi>n</mi><mi>d</mi><mi>i</mi><mi>n</mi><mi>g</mi></mrow></msub></math></span>= 0.13 eV indicates a stable configuration for the R-CSP-BF complex. Furthermore, Non-Covalent Interaction (NCI) analysis highlighted the critical roles of hydrogen bonding and van der Waals forces in the adsorption of BF dye. These results underscore the potential of CSP as an effective and environmentally friendly bioadsorbent for removing dyes from wastewater.</div></div>","PeriodicalId":36919,"journal":{"name":"Results in Engineering","volume":"29 ","pages":"Article 108562"},"PeriodicalIF":7.9,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0