Sustainable Materials and Technologies最新文献_第7页

Application of a novel magnetic Z-scheme heterojunction photocatalyst boron doped-rGO/Fe₂O₃/N-TiO₂ composite for degradation of Rhodamine B dye 硼掺杂新型磁z型异质结光催化剂- rgo /Fe₂O₃/N-TiO₂复合材料降解罗丹明B染料的应用

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2026-01-25 DOI: 10.1016/j.susmat.2026.e01881

Nagma Khan , Kavita Tapadia , Chandrakant Thakur

This study reports, the development of a novel magnetic Z-scheme heterojunction photocatalyst, boron-doped reduced graphene oxide/Fe₂O₃/N-TiO₂ (B-rGO/Fe₂O₃/N-TiO₂) composite, synthesised via a hydrothermal process. Comprehensive characterization using FTIR, XRD, SEM, HRTEM, XPS, EPR, UV–Vis DRS, particle size distribution, and zeta potential analyses confirmed effective boron doping, the formation of crystalline anatase TiO₂ and Fe₂O₃ phases, the presence of paramagnetic Fe³⁺ centres, and enhanced surface charge stability. The photocatalytic efficiency of the composite was evaluated through the degradation study of Rhodamine B dye under UV irradiation. At Optimal operational conditions pH 6, catalyst dosage of 20 mg, and dye concentration of 10 mg/L and time 120 min show 94.56% degradation of Rhodamine B dye. The kinetic study based on a pseudo-first order model, yielding a rate constant of k = 0.0254 min⁻¹, indicates enhanced activity. The composite retained high efficiency over five consecutive cycles, demonstrating good stability and recyclability. Radical scavenging experiments identified superoxide radicals (•O₂⁻) and hydroxyl radicals (•OH) as the dominant reactive species. A Z-scheme charge transfer mechanism was proposed, in which photogenerated electrons in the CB of Fe₂O₃ recombine with holes in the VB of N-TiO₂ through B-rGO mediator, resulting in enhanced redox potential and suppressed charge recombination. The findings highlight the potential of the B-rGO/Fe₂O₃/N-TiO₂ composite as an efficient and reusable photocatalyst for environmental remediation applications.

Environmental implication

The present study demonstrates that the synthesised B-rGO/Fe₂O₃/N-TiO₂ photocatalyst effectively degrades Rhodamine B dye under visible light irradiation, highlighting its potential for treating dye-contaminated wastewater. Minor environmental implications may arise during the synthesis stage due to the use of certain chemicals; however, these impacts can be mitigated through appropriate handling and waste management practices. Furthermore, the reusability of the photocatalyst was evaluated to ensure sustainable operation and to minimize solid waste generation, confirming its potential for repeated use with consistent performance.

本研究报道了一种新型的磁z方案异质结光催化剂的开发，硼掺杂还原氧化石墨烯/Fe₂O₃/N-TiO₂（B-rGO/Fe₂O₃/N-TiO₂）复合材料，通过水热法合成。通过FTIR、XRD、SEM、HRTEM、XPS、EPR、UV-Vis DRS、粒度分布和zeta电位分析等综合表征，证实了硼的有效掺杂、锐钛矿tio_2和feo_2 O₃相的形成、顺磁性Fe3+中心的存在以及表面电荷稳定性的增强。通过紫外光对罗丹明B染料的降解研究，评价了复合材料的光催化效率。在pH为6、催化剂用量为20 mg、染料浓度为10 mg/L、时间为120 min的最佳操作条件下，罗丹明B染料的降解率为94.56%。基于伪一阶模型的动力学研究表明，其活性增强，速率常数k = 0.0254 min−1。复合材料在连续五次循环中保持了高效率，表现出良好的稳定性和可回收性。自由基清除实验发现，超氧自由基（•O₂−）和羟基自由基（•OH）是主要的活性物质。提出了一种Z-scheme电荷转移机制，Fe₂O₃的CB中的光生电子通过B-rGO介质与N-TiO₂的VB中的空穴复合，从而增强了氧化还原电位，抑制了电荷的复合。这些发现突出了B-rGO/Fe₂O₃/N-TiO₂复合材料作为一种高效和可重复使用的光催化剂在环境修复应用中的潜力。本研究表明，合成的B- rgo /Fe₂O₃/N-TiO₂光催化剂在可见光照射下有效降解罗丹明B染料，突出了其处理染料污染废水的潜力。在合成阶段，由于使用某些化学品，可能会产生轻微的环境影响；然而，这些影响可以通过适当的处理和废物管理措施来减轻。此外，还评估了光催化剂的可重复使用性，以确保可持续运行并最大限度地减少固体废物的产生，确认了其重复使用的潜力，并保持了一致的性能。

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引用次数: 0

Bimetallic MOFs/MXene-derived heterogeneous photocatalyst for enhanced adsorption and synergistic photo-Fenton degradation of methylene blue 双金属mof / mxene衍生的非均相光催化剂对亚甲基蓝的增强吸附和协同光- fenton降解

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2026-02-06 DOI: 10.1016/j.susmat.2026.e01901

Wenjuan Zhang , Zhongliang Li , Yezhi Ding , Panpan Zhang , Yongqiang Wan , Qiaohong Zhang , Jinyuan Ma , Youliang Wang

The development of iron-based heterogeneous Fenton catalysts is often hindered by challenges including slow Fe³⁺/Fe²⁺ cycling, limited interfacial electron transfer kinetics, and inefficient mass transport, leading to suboptimal catalytic efficiency. In this work, three distinct assembly strategies—hydrogen bonding, electrostatic self-assembly, and solvothermal methods—were utilized to fabricate MCuFe-MOF/PMMA@MXene (denoted as MPM) microspheres for the photo-Fenton degradation of methylene blue (MB). Notably, the microspheres fabricated via electrostatic self-assembly (designated E-MPM) exhibited a unique three-dimensional (3D) microsphere architecture. This structure significantly enhanced the adsorption capacity for pollutants and improved mass transfer, concurrently broadening the visible-light absorption range. The well-defined interfaces within the E-MPM microspheres facilitate the formation of multiple heterojunctions with favorable band alignment, which effectively promotes the generation and separation of photogenerated electron-hole pairs. Consequently, highly reactive free radicals are efficiently generated through the photo-Fenton process, the E-MPM microspheres demonstrated high catalytic activity, achieving a remarkable MB degradation efficiency of approximately 91.9% within 60 min at 4 g/L MB under visible-light irradiation. This study not only provides a fundamental insight into the design of bimetallic MOF/MXene-derived heterogeneous photocatalysts, but also broadens the application scope of MXene-based materials in advanced water treatment technologies.

铁基非均相Fenton催化剂的发展经常受到Fe3+/Fe2+循环缓慢、界面电子传递动力学有限和质量传递效率低下等挑战的阻碍，导致催化效率不理想。在这项工作中，利用三种不同的组装策略-氢键，静电自组装和溶剂热方法-制造用于光- fenton降解亚甲基蓝（MB）的MCuFe-MOF/PMMA@MXene（表示为MPM）微球。值得注意的是，通过静电自组装制备的微球（称为E-MPM）呈现出独特的三维（3D）微球结构。这种结构显著增强了对污染物的吸附能力，改善了传质，同时拓宽了可见光吸收范围。E-MPM微球内部界面良好，有利于形成具有良好带向的多异质结，有效地促进了光生电子-空穴对的产生和分离。因此，E-MPM微球通过光- fenton工艺高效生成高活性自由基，表现出较高的催化活性，在4 g/L MB的可见光照射下，60 min内降解MB的效率约为91.9%。本研究不仅为MOF/ mxene衍生双金属非均相光催化剂的设计提供了基础见解，而且拓宽了mxene基材料在高级水处理技术中的应用范围。

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引用次数: 0

Mechanochemical processing of date fronds and seeds: Chemistry-dependent nano-fibrillation and dispersion properties 枣叶和种子的机械化学加工：化学依赖的纳米纤颤和分散特性

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2026-02-10 DOI: 10.1016/j.susmat.2026.e01903

Qian Liu , Asier de Santos Larrañaga , Mohamed Hamid Salim , Malak AbuZaid , M-Haidar A. Dali , Fawzi Banat , Marco Beaumont , Erlantz Lizundia , Blaise L. Tardy

Date seed and frond are the principal by-products of date palm trees. Despite their abundance, their potential as feedstocks for high-value fibrillated materials remains underexplored. This study provides the first systematic comparison of the sub-cellular fibrillation behavior of date palm waste, specifically date fronds (DF) and date seeds (DS) as a function of alkaline, oxidative, or combined chemical pre-treatments followed by ball milling. By exploring how the distinct chemistries influence fibrillation efficiency, gel formation, and sedimentation, the work establishes a detailed structure-processing-property relationship. The obtained dispersions were examined for their physico-chemical properties, such as gelling and sedimentation behavior. DF samples generally exhibited superior fibrillation, particularly following oxidative and alkaline-oxidative treatments, whereas sulfite-oxidative routes generated aggregated clusters rather than uniform nanofibers. DS-derived biomass showed pronounced aggregation and shorter fibrillar or particulate structures, reflecting intrinsic differences in composition and microstructure. The combination of oxidative and alkaline-oxidative treatments was the most effective approach for obtaining high-quality nanocellulose from DF. Interestingly, for both samples after chemical treatments and thorough removal of residuals, mechanical fibrillation led to large amounts of non-fibrous leachates in the dispersion. Overall, this study outlines the key chemical factors governing nanofibrillation of date palm residues and provides guidance for optimizing their conversion into biomass-based micro- and nanomaterials.

枣子和枣叶是枣椰树的主要副产品。尽管储量丰富，但它们作为高价值纤维化材料原料的潜力仍未得到充分开发。本研究首次系统比较了枣椰树废弃物，特别是枣叶（DF）和枣籽（DS）在碱性、氧化或混合化学预处理后的球磨处理中的亚细胞纤颤行为。通过探索不同的化学物质如何影响纤颤效率、凝胶形成和沉积，该工作建立了详细的结构-加工-性能关系。测试了得到的分散体的物理化学性质，如胶凝和沉淀行为。DF样品通常表现出优异的纤维性，特别是在氧化和碱氧化处理后，而亚硫酸盐氧化途径产生聚集的团簇而不是均匀的纳米纤维。ds衍生的生物量具有明显的聚集性和较短的纤维状或颗粒状结构，反映了其组成和微观结构的内在差异。氧化和碱氧化相结合的处理方法是制备高品质纳米纤维素的最有效方法。有趣的是，对于经过化学处理和彻底去除残留物的样品，机械颤动导致大量非纤维性渗滤液分散。总体而言，本研究概述了控制椰枣残基纳米纤维的关键化学因素，并为优化其转化为生物质基微纳米材料提供了指导。

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引用次数: 0

The role of MXenes in carbon capture and storage: Innovations and environmental impact MXenes在碳捕获和封存中的作用：创新和环境影响

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2025-12-19 DOI: 10.1016/j.susmat.2025.e01819

Priyanka Mahajan , Virat Khanna , Mansi Sharma , Kamaljit Singh

An earnest need to mitigate global climate change encompasses capturing greenhouse gases (GHGs) in the environment, particularly carbon dioxide (CO₂). Thus, innovations in the field of CO₂ capture are a prime necessity and gaining supreme importance. The current review has predominantly focused upon deciphering the CO₂ capture capabilities of wonder two-dimensional (2D) MXenes materials. MXenes with superb surface area outperform traditional materials in adsorption capacity. Besides, high suitability for surface functionalization adorns MXenes material for selective adsorption of CO₂ with the least energy consumption, outshining them from conventional amine-based adsorbents. The remarkable regeneration and durability abilities of MXenes build a new era of affordable and sustainable carbon capture and storage (CCS) practices. Replacing hydrofluoric acid (HF) etching with green MXenes synthesis techniques, such as microwave-assisted, electrochemical etching, and LiF process, significantly reduces the environmental impacts as well as enhances the scalability. The life cycle assessment (LCA) studies thus reveal that the implication of MXenes in CO₂ capture reduces the GHG emissions as compared to traditional coal-based adsorbents, which utilise non-renewable energy resources. Introducing the surface functional groups and noble metal doping in the structure of MXenes further push the CO₂ capture limits of these materials by embellishing their gas adsorption properties. Discussing mechanisms involved in the MXenes-based CO₂ capture and their integration with CCS, along with the thermodynamics involved through various lab-scale studies and their practical advantages, the current review may aid the scientific community in further advancements. Conclusively, MXenes-based CO₂ capture supports SDGs 11 and 13 pertaining to capturing and removal of air pollutants and provides a sustainable, economic, scalable, and highly efficient way for a cleaner and greener future. However, the challenges about the present process are identified and their suggested addressal have been discussed along with the impact of integrating more advanced computational modelling and ML-based techniques on the resilience of MXenes-based CO₂ capture techniques.

减缓全球气候变化的迫切需要包括捕获环境中的温室气体（ghg），特别是二氧化碳（CO2）。因此，二氧化碳捕获领域的创新是必不可少的，而且越来越重要。目前的综述主要集中在破译奇妙二维（2D） MXenes材料的二氧化碳捕获能力。MXenes具有优异的表面积，在吸附能力上优于传统材料。此外，MXenes材料具有良好的表面功能化能力，能够以最小的能耗对CO2进行选择性吸附，优于传统胺基吸附剂。MXenes卓越的再生能力和耐用性开创了可负担且可持续的碳捕集与封存（CCS）实践的新时代。用微波辅助、电化学蚀刻、LiF工艺等绿色MXenes合成技术代替氢氟酸（HF）蚀刻，大大减少了对环境的影响，提高了可扩展性。因此，生命周期评估（LCA）研究表明，与利用不可再生能源的传统煤基吸附剂相比，MXenes在CO2捕获中的作用减少了温室气体排放。在MXenes结构中引入表面官能团和贵金属掺杂，通过修饰这些材料的气体吸附性能，进一步推动了这些材料的CO2捕获极限。讨论基于mxenes的二氧化碳捕获及其与CCS集成的机制，以及通过各种实验室规模研究所涉及的热力学及其实际优势，当前的综述可能有助于科学界进一步取得进展。最后，基于mxenes的二氧化碳捕获支持可持续发展目标11和13，即捕获和去除空气污染物，并为更清洁、更绿色的未来提供可持续、经济、可扩展和高效的方式。然而，本文确定了当前过程中的挑战，并讨论了它们的建议解决方案，以及集成更先进的计算建模和基于ml的技术对基于mxenes的二氧化碳捕获技术弹性的影响。

{"title":"The role of MXenes in carbon capture and storage: Innovations and environmental impact","authors":"Priyanka Mahajan , Virat Khanna , Mansi Sharma , Kamaljit Singh","doi":"10.1016/j.susmat.2025.e01819","DOIUrl":"10.1016/j.susmat.2025.e01819","url":null,"abstract":"<div><div>An earnest need to mitigate global climate change encompasses capturing greenhouse gases (GHGs) in the environment, particularly carbon dioxide (CO<sub>2</sub>). Thus, innovations in the field of CO<sub>2</sub> capture are a prime necessity and gaining supreme importance. The current review has predominantly focused upon deciphering the CO<sub>2</sub> capture capabilities of wonder two-dimensional (2D) MXenes materials. MXenes with superb surface area outperform traditional materials in adsorption capacity. Besides, high suitability for surface functionalization adorns MXenes material for selective adsorption of CO<sub>2</sub> with the least energy consumption, outshining them from conventional amine-based adsorbents. The remarkable regeneration and durability abilities of MXenes build a new era of affordable and sustainable carbon capture and storage (CCS) practices. Replacing hydrofluoric acid (HF) etching with green MXenes synthesis techniques, such as microwave-assisted, electrochemical etching, and LiF process, significantly reduces the environmental impacts as well as enhances the scalability. The life cycle assessment (LCA) studies thus reveal that the implication of MXenes in CO<sub>2</sub> capture reduces the GHG emissions as compared to traditional coal-based adsorbents, which utilise non-renewable energy resources. Introducing the surface functional groups and noble metal doping in the structure of MXenes further push the CO<sub>2</sub> capture limits of these materials by embellishing their gas adsorption properties. Discussing mechanisms involved in the MXenes-based CO<sub>2</sub> capture and their integration with CCS, along with the thermodynamics involved through various lab-scale studies and their practical advantages, the current review may aid the scientific community in further advancements. Conclusively, MXenes-based CO<sub>2</sub> capture supports SDGs 11 and 13 pertaining to capturing and removal of air pollutants and provides a sustainable, economic, scalable, and highly efficient way for a cleaner and greener future. However, the challenges about the present process are identified and their suggested addressal have been discussed along with the impact of integrating more advanced computational modelling and ML-based techniques on the resilience of MXenes-based CO<sub>2</sub> capture techniques.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01819"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toward circular asphalt materials: Rheological and microstructural insights into the rejuvenation of SBS-modified binders 走向圆形沥青材料：sbs改性粘合剂再生的流变学和微观结构见解

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2025-11-25 DOI: 10.1016/j.susmat.2025.e01787

Xiong Xu , Yuhao Peng , Yu Liu , Junwen Pei , Jie Liu , Anand Sreeram

SBS modified asphalt (SBSMA) pavement experiences natural aging, reducing strength and increasing cracking susceptibility. To address environmental pollution and promote recycling, rejuvenators are used to restore aged asphalt. However, conventional methods, such as adding virgin asphalt or replenishing missing components, are often ineffective. To achieve simultaneous rejuvenation of SBS molecules and the asphalt matrix, this study developed a novel composite rejuvenator by blending polymeric diphenylmethane diisocyanate (PMDI) with aromatic oil (AO) at varying ratios. Dynamic shear rheological (DSR) tests, Christensen-Anderson (CA) model fitting, Fourier transform infrared spectroscopy (FTIR), and fluorescence microscopy (FM) were used to characterize rejuvenation. Results demonstrated that the combined use of AO and PMDI effectively rejuvenates both aged asphalt components and SBS modifiers, with optimal efficiency at a 3 % dosage (AO:PMDI = 7:3). At low temperatures (5 °C), aromatic fraction replenishment and reconstruction of flexible polybutadiene (PB) segments in SBS molecules significantly enhanced the ductility of aged SBSMA. Under medium and high temperatures (25 °C, 60 °C), restored SBS crosslinking structures endowed the asphalt with superior elasticity, improving rutting resistance by 57 % at 25 °C. FTIR and FM analyses revealed the reaction mechanism involving isocyanate groups and validated the optimal rejuvenator ratio. This composite rejuvenator demonstrates comprehensive rejuvenation capability for SBSMA while meeting engineering performance requirements, presenting an efficient solution for SBSMA rejuvenation.

SBS改性沥青（SBSMA）路面经历自然老化，强度降低，易开裂性增加。为了解决环境污染和促进循环利用，使用再生剂来修复老化的沥青。然而，传统的方法，如添加原始沥青或补充缺失的成分，往往是无效的。为了实现SBS分子和沥青基体的同时再生，本研究通过将聚合物二苯基甲烷二异氰酸酯（PMDI）与芳香油（AO）按不同比例共混，开发了一种新型复合再生剂。动态剪切流变学（DSR）测试、Christensen-Anderson （CA）模型拟合、傅里叶变换红外光谱（FTIR）和荧光显微镜（FM）用于表征再生。结果表明，AO和PMDI的联合使用可以有效地使老化的沥青组分和SBS改性剂恢复活力，当AO和PMDI的用量为3%时（AO:PMDI = 7:3）效果最佳。在低温（5℃）条件下，SBS分子中芳香族组分的补充和柔性聚丁二烯（PB）片段的重建显著增强了老化SBSMA的延展性。在中高温（25°C、60°C）条件下，修复后的SBS交联结构使沥青具有优异的弹性，在25°C条件下抗车辙性能提高57%。FTIR和FM分析揭示了涉及异氰酸酯基团的反应机理，并验证了最佳返青剂配比。该复合回春剂在满足工程性能要求的同时，具有SBSMA的综合回春能力，为SBSMA回春提供了一种高效的解决方案。

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引用次数: 0

Kinetic study of HER inhibition and OER promotion with selenization on Rh/Ni(OH)2 catalysts 硒化对Rh/Ni(OH)2催化剂HER抑制和OER促进的动力学研究

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2025-12-11 DOI: 10.1016/j.susmat.2025.e01814

Dongdong Qin , Xingyun Li , Farhat Nosheen , Xueyan Wu , Yan Lv , Jixi Guo

The rational design and construction of efficient and stable bifunctional electrocatalysts remain a significant challenge in advancing the development of overall water splitting technology. In this work, Rh/Ni(OH)₂ and Rh/Ni₃Se₄ catalysts are successfully fabricated on nickel foam (NF) substrates for cathodic hydrogen evolution reaction (HER) and anodic oxygen evolution reaction (OER), respectively. The influence of selenization on the kinetics of the HER and OER catalyzed by Rh/Ni(OH)₂ is systematically investigated. Results demonstrate that selenization (Rh/Ni₃Se₄) promotes the generation of high-valent Ni and significantly reduces the charge transfer resistance, thereby enhancing the OER activity. However, selenization increases the adsorption and desorption energy barriers of H intermediates, leading to a decrease in HER performance. At a current density of 10 mA cm⁻², the HER overpotential of the Rh/Ni₃Se₄/NF catalyst increases by 19 mV while the OER overpotential decreases by 50 mV compared to Rh/Ni(OH)₂/NF. Notably, an asymmetric electrolyzer utilizing these catalysts operates stably for over 800 h at a current density of 500 mA cm⁻² and maintains stability for 1000 h in start-stop cycle tests. This work provides a theoretical basis and experimental reference for the rational design of selenide catalysts.

合理设计和构建高效、稳定的双功能电催化剂仍然是推动整体水分解技术发展的重要挑战。在泡沫镍（NF）衬底上制备了Rh/Ni(OH)2和Rh/Ni3Se4催化剂，分别用于阴极析氢反应（HER）和阳极析氧反应（OER）。系统研究了硒化对Rh/Ni(OH)2催化HER和OER反应动力学的影响。结果表明，硒化（Rh/Ni3Se4）促进了高价Ni的生成，显著降低了电荷转移阻力，从而提高了OER活性。然而，硒化增加了氢中间体的吸附和解吸能垒，导致HER性能下降。当电流密度为10 mA cm−2时，与Rh/Ni(OH)2/NF相比，Rh/Ni3Se4/NF催化剂的HER过电位提高了19 mV， OER过电位降低了50 mV。值得注意的是，使用这些催化剂的不对称电解槽在500毫安厘米−2的电流密度下稳定运行超过800小时，并在启停循环测试中保持1000小时的稳定性。该工作为硒化催化剂的合理设计提供了理论依据和实验参考。

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引用次数: 0

Intelligent prediction of fire retardancy and smoke suppression in waste wood composites with a hybrid deep learning model 基于混合深度学习模型的废木复合材料阻燃抑烟智能预测

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2025-12-04 DOI: 10.1016/j.susmat.2025.e01799

Manqi Xu , Liwen Zhou , Junjie Xia , Shenjie Han , Xingying Zhang , Kongjie Gu , Zhiqiang Dong , Junfeng Hou

The green and high-value utilization of waste wood is crucial for sustainable development in the wood industry. In this study, waste wood served as the primary raw material, modified with bio-derived tannic acid (TA) and phytic acid (PA) as flame retardants, to fabricate high-performance biomass-based composite. The synergistic mechanisms between waste wood, modifiers, and adhesives were elucidated using techniques including FTIR, XPS, and SEM-EDS. Deep learning models—RNN, LSTM, and CNN-LSTM-A—were innovatively applied to predict flame retardancy (heat release rate (HRR), total heat release (THR)) and smoke suppression (total smoke release (TSR), total smoke production (TSP)) of the composites. The results indicate that the addition of 9 wt% TA/PA significantly enhances the flame retardancy and smoke suppression properties of the composite material. Specifically, the PHRR and THR were reduced by 49.03 % and 11.52 %, respectively, while the TSR and TSP both decreased substantially by 87.20 %. The modulus of rupture (MOR), modulus of elasticity (MOE), and internal bond strength (IB) increased by 34.01 %, 35.52 %, and 84.62 %, enabling simultaneous enhancement of flame retardancy and mechanical properties. The CNN-LSTM-A model demonstrated superior prediction accuracy, with R² values between 0.9769 and 0.9949 (Testing sets) and 0.9776–0.9981 (Training sets). This work provides both theoretical and practical support for developing high-performance green composites from waste wood via TA/PA modification and introduces a deep learning-based intelligent prediction approach for performance-oriented design and development of advanced wood composites.

废木材的绿色、高价值利用对木材工业的可持续发展至关重要。本研究以废木材为主要原料，以生物衍生单宁酸（TA）和植酸（PA）为阻燃剂进行改性，制备高性能生物质基复合材料。利用FTIR、XPS和SEM-EDS等技术分析了废木材、改性剂和胶粘剂之间的协同作用机制。创新性地应用深度学习模型——rnn、LSTM和cnn -LSTM- a来预测复合材料的阻燃性（热释放率（HRR）、总放热率（THR））和抑烟性（总发烟率（TSR）、总发烟量（TSP））。结果表明，掺量为9wt %的TA/PA显著提高了复合材料的阻燃性能和抑烟性能。其中，PHRR和THR分别下降了49.03%和11.52%，TSR和TSP均大幅下降了87.20%。断裂模量（MOR）、弹性模量（MOE）和内部粘结强度（IB）分别提高了34.01%、35.52%和84.62%，同时增强了阻燃性和力学性能。CNN-LSTM-A模型的预测准确率较高，测试集的R2值在0.9769 ~ 0.9949之间，训练集的R2值在0.9776 ~ 0.9981之间。本研究为利用废木材进行TA/PA改性开发高性能绿色复合材料提供了理论和实践支持，并为高性能木质复合材料的设计和开发提供了一种基于深度学习的智能预测方法。

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引用次数: 0

Thin layer graphite confined nano-SnO2 formed in-situ for advanced lithium-ion batteries 原位形成了一层石墨约束的纳米sno2，用于先进锂离子电池

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2025-12-02 DOI: 10.1016/j.susmat.2025.e01798

Mingxin Ran , Chunyan Zhang , Jiaxing Luo , Zhengquan He , Yu Jiang , Wei Xiao , Xuemin Yan

A composite material derived from graphite modified with high-specific-capacity metal oxides demonstrates significant enhancement in electrochemical performance for lithium-ion battery anodes. In this study, calcium carbide and tin (II) chloride dihydrate can be directly converted into graphite and elemental tin by a one-step thermochemical reaction. Subsequently, through a low-temperature heat treatment in air environment, thin-layer graphite-confined nano-SnO₂ (SnO₂@G) was obtained. The nano-sized tin dioxide generated in situ enhanced the lithium storage capacity, while the thin layer of graphite provided a flexible and tough base, effectively alleviating the volume expansion of tin dioxide. As an anode material for lithium-ion batteries, SnO₂@G₉₀₀ demonstrates excellent lithium storage performance, achieving a capacity of 913.5 mA h g⁻¹ at 0.1 A g⁻¹, and a capacity of 515.4 mA h g⁻¹ after 400 cycles at 2 A g⁻¹. This work proposes a simple and successful approach for producing SnO₂-thin layer graphite composites, which are anticipated to represent a novel generation of anode materials for lithium-ion batteries.

用高比容金属氧化物改性石墨制备的复合材料显著提高了锂离子电池阳极的电化学性能。在本研究中，电石和二水合氯化锡可以通过一步热化学反应直接转化为石墨和单质锡。随后，通过空气环境下的低温热处理，得到了薄层石墨约束的纳米sno2 （SnO2@G）。原位生成的纳米二氧化锡增强了锂的存储能力，而石墨薄层提供了灵活而坚韧的基底，有效缓解了二氧化锡的体积膨胀。作为锂离子电池的负极材料，SnO2@G900表现出优异的锂存储性能，在0.1 ag−1下，其容量为913.5 mA h g−1，在2 ag−1下，循环400次后，其容量为515.4 mA h g−1。这项工作提出了一种简单而成功的方法来生产sno2薄层石墨复合材料，这有望代表锂离子电池的新一代负极材料。

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引用次数: 0

Mechanistic evaluation of interphase softening in GF-epoxy composites via freeze-thaw recycling: A nano-indentation study 冻融循环对gf -环氧复合材料界面软化的机理评价：纳米压痕研究

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2026-01-10 DOI: 10.1016/j.susmat.2026.e01860

Khalil Ahmed, Xu Jiang, Xuhong Qiang

Retired glass-fiber-reinforced epoxy (GF-epoxy) composites, such as wind-turbine blades, pose challenges for efficient fiber-resin separation due to their highly robust interphase. Controlled pre-softening of this region is essential for efficient recovery in modular recycling systems. However, it remains overlooked in conventional thermo-chemical routes that attack the bulk composite, damage silane-rich GF sizing, and pose environmental concerns. Building on our earlier demonstration of freeze-thaw (FT) recycling, this study provides a mechanistic understanding of interphase softening as an alternative to conventional methods. Short and long (5,10 cycle) FT treatments were applied to examine effects on the inner and outer interphase. Nano-mechanical results revealed ∼27% interphase modulus reduction after short cycling, while the fiber-adjacent region remained mechanically unchanged. In contrast, prolonged cycling led to ∼7–8% partial interphase modulus rebound accompanied by increased compliance near the fiber wall, indicating that extended FT exposure eventually influences this inner region. Corelative gravimetric and micro-CT trends further support moisture ingress and crack evolution as key drivers of these transitions, with literature indicating possible accompanying hydrolysis-recondensation effects. These findings identify short FT cycling as the most effective and scalable pre-treatment window for selective interphase weakening while maintaining the mechanical response of the fiber-adjacent region.

退役的玻璃纤维增强环氧树脂（gf -环氧）复合材料，如风力涡轮机叶片，由于其高度坚固的界面相，对有效的纤维-树脂分离提出了挑战。在模块化回收系统中，控制该区域的预软化对于有效回收至关重要。然而，在传统的热化学路线中，它仍然被忽视，这些路线会破坏大块复合材料，破坏富含硅烷的GF浆料，并造成环境问题。在我们早期冻融（FT）回收的演示基础上，本研究提供了对相间软化作为传统方法替代方案的机理理解。采用短周期和长周期（5,10周期）FT处理来检测对内间期和外间期的影响。纳米力学结果显示，短周期后相间模量降低了27%，而纤维邻近区域的力学性能保持不变。相反，长时间的循环导致~ 7-8%的部分相间模量反弹，同时纤维壁附近的顺应性增加，表明延长的FT暴露最终影响了该内部区域。相关的重量和微ct趋势进一步支持水分进入和裂纹演化是这些转变的关键驱动因素，文献表明可能伴随水解-再缩合效应。这些发现表明，在保持纤维邻近区域的机械响应的同时，短FT循环是选择性间期减弱的最有效和可扩展的预处理窗口。

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引用次数: 0

A sustainable solution for lithium-air batteries: Green polymer membrane with gradient pores for selective O₂ transport in humid air 锂空气电池的可持续解决方案：具有梯度孔的绿色聚合物膜，可在潮湿空气中选择性输送O₂

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2025-12-23 DOI: 10.1016/j.susmat.2025.e01832

Wei Yuan, Hong Sun, Jie Li, Mingfu Yu, Jiaxin Pang, Liqiang Cui

The employment of green polymer membranes has emerged as a pivotal component in the advancement of the sustainability and performance of lithium-air batteries (LABs). This development offers an eco-friendly option in comparison to conventional lithium-ion batteries by LABs. The present paper sets out an innovative approach to developing green polymer membranes, namely oxygen selective membranes (O₂SM), with an asymmetric structure comprising a surface macroporous layer (9.85 μm) and a dense bottom layer (1.5 μm). Prepared via a dry-wet phase transformation method, the O₂SM exhibits a superhydrophobic barrier (static contact angle of 100.19°), excellent water vapour barrier capability (flux of 330.7 g/cm²·24 h at 70 % RH) and ionic conductivity of 4.18 × 10⁻² S/m. Under RH = 30 % conditions, the O₂/H₂O selectivity coefficient α of the O₂SM is 1.13. Even under RH = 70 % conditions, α is 0.88. When applied to lithium-air batteries, the batteries with the help of the O₂SM increased cycle life by 368 % (from 25 to 117 cycles), boosted specific capacity by 41.1 % (from 3590 to 5065 mAh/g) and reduced overpotential by 7.7 % (from 1.30 to 1.20 V). By addressing these challenges, green polymer membrane hold the potential to transform energy storage technologies, thereby supporting global energy transitions and facilitating a future that is more sustainable and energy-efficient.

绿色聚合物膜的使用已经成为锂空气电池可持续性和性能进步的关键组成部分（实验室）。与实验室的传统锂离子电池相比，这一发展提供了一种环保的选择。本文提出了一种开发绿色聚合物膜的创新方法，即氧选择膜（O2SM），其不对称结构由表面大孔层（9.85 μm）和致密底层（1.5 μm）组成。通过干湿相变法制备的O₂SM具有超疏水屏障（静态接触角为100.19°），优异的水蒸气屏障性能（在70% RH下通量为330.7 g/cm2·24 h），离子电导率为4.18 × 10−2 S/m。在RH = 30%的条件下，O₂/H₂O选择性系数α为1.13。即使在RH = 70%的条件下，α也为0.88。当应用于锂空气电池时，O₂SM电池的循环寿命延长了368%（从25次循环到117次循环），比容量提高了41.1%（从3590 mAh/g到5065 mAh/g），过电位降低了7.7%（从1.30 V到1.20 V）。通过解决这些挑战，绿色聚合物膜具有改变储能技术的潜力，从而支持全球能源转型，促进更加可持续和节能的未来。

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引用次数: 0