Materials Science for Energy Technologies最新文献

Production of sustainable graphene and its derivatives through flash joule heating: A systemic review 通过闪蒸焦耳加热生产可持续石墨烯及其衍生物：系统综述

Q1 Materials Science

Materials Science for Energy Technologies

Pub Date : 2026-01-01 Epub Date: 2026-01-26 DOI: 10.1016/j.mset.2026.01.002

Nebechi Kate Obiora , Chika Oliver Ujah , Benjamin Nnamdi Ekwueme , Christian O. Asadu , Peter Apata Olubambi

The goal of this critique is to examine the newer Flash Joule Heating (FJH) technique for the production of graphene and hydrogen to determine if either production method is sustainable. By conducting an in-depth evaluation into the FJH technique as well as other methods such as chemical vapor deposition, this review seeks to determine which is the most effective method. With high-voltage pulses, FJH can quickly transform waste materials rich in carbon, such as biomass and plastics, into superior quality graphene, while also producing hydrogen gas as a by-product. FJH has been estimated to use around 7.2 kJ/g of energy which is considerably lower than other methods, and it also has a higher scalability and a 90% lower carbon footprint than the classical methods and does not need as many costly catalysts and undergoes less energy demanding processes like electrolysis, which makes it more economically viable. Its usage has been extended to cover energy storage, hydrogen systems, and water purification. With such complex systems, there is bound to be variation in feedstock and defect control which can be solved using advanced AI/ML optimization and better pre-treatments. FJH is one step closer to achieving circular economy goals by turning waste products into materials of value, demonstrating the ability to mass produce hydrogen and graphene in an economical manner to aid in the ideal of a carbon–neutral energy future.

本评论的目的是检查用于生产石墨烯和氢的较新的闪光焦耳加热（FJH）技术，以确定任何一种生产方法是否可持续。通过对FJH技术以及化学气相沉积等其他方法进行深入评估，本文旨在确定哪种方法最有效。通过高压脉冲，FJH可以快速将富含碳的废物（如生物质和塑料）转化为优质石墨烯，同时还可以产生氢气作为副产品。据估计，FJH的能量消耗约为7.2 kJ/g，这比其他方法要低得多，而且与传统方法相比，它具有更高的可扩展性和低90%的碳足迹，不需要那么多昂贵的催化剂，也不需要像电解这样需要更少能量的过程，这使得它在经济上更可行。它的用途已经扩展到涵盖储能、氢系统和水净化。对于如此复杂的系统，在原料和缺陷控制方面必然存在变化，这可以使用先进的AI/ML优化和更好的预处理来解决。FJH通过将废物转化为有价值的材料，向实现循环经济目标迈进了一步，展示了以经济方式大规模生产氢和石墨烯的能力，有助于实现碳中和能源未来的理想。

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引用次数: 0

Enhanced ion transport in CNT-doped PVA/HCl/TEOS electrolyte membranes for aluminium-air batteries 碳纳米管掺杂PVA/HCl/TEOS铝-空气电池电解质膜中离子输运的增强

Q1 Materials Science

Materials Science for Energy Technologies

Pub Date : 2026-01-01 Epub Date: 2025-12-08 DOI: 10.1016/j.mset.2025.12.001

Firman Ridwan , Gifahri Renardy , Dean Bilalwa Agusto , Darwison Darwison

This study investigates the impact of carbon nanotube (CNT) incorporation on the electrochemical performance of polyvinyl alcohol (PVA)/HCl/TEOS-based solid polymer electrolytes for rechargeable aluminium-air batteries. CNTs were introduced in varying quantities (0–0.05 g), while a polylactic acid (PLA) nanofiber layer containing carbon quantum dots (CQDs) was integrated as a separator to enhance ion transport. The inclusion of CNTs improved the amorphous structure, as evidenced by X-ray diffraction (XRD), and optimized ionic pathways within the polymer-silica network. The PHT0.05CNT membrane exhibited the highest ionic conductivity of 6.25 × 10⁻³ S cm⁻¹, while transference number analysis confirmed predominant ionic conduction (T_ion = 0.923). Among the tested compositions, PHT0.02CNT achieved the best battery performance, delivering a capacity of 0.4168 mAh g⁻¹ and an energy density of 0.145 mWh g⁻¹. Cyclic voltammetry further demonstrated enhanced redox reversibility with the addition of CNTs. These findings underscore that controlled CNT incorporation significantly enhances ion transport and electrochemical performance, suggesting strong potential for developing high-efficiency aluminium-air batteries.

本文研究了碳纳米管（CNT）掺入对聚乙烯醇(PVA)/HCl/ teos基固体聚合物电解质用于可充电铝空气电池的电化学性能的影响。加入不同数量的碳纳米管（0-0.05 g），同时集成含有碳量子点（CQDs）的聚乳酸（PLA）纳米纤维层作为分离器以增强离子传输。x射线衍射（XRD）结果表明，CNTs的加入改善了聚合物-二氧化硅网络的非晶结构，并优化了聚合物-二氧化硅网络内的离子路径。PHT0.05CNT膜的离子电导率最高，为6.25 × 10−3 S cm−1，迁移数分析证实其离子电导率最高（Tion = 0.923）。在测试的组合物中，pht0.02碳纳米管的电池性能最好，容量为0.4168 mAh g−1，能量密度为0.145 mWh g−1。循环伏安法进一步证明了CNTs的加入增强了氧化还原可逆性。这些发现强调，可控碳纳米管掺入显著提高离子传输和电化学性能，表明开发高效铝-空气电池的巨大潜力。

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引用次数: 0

Tailoring the Mn/Co ratio in electrospun Mn-Co oxide embedded-carbon nanofibers as cathode for high-performance zinc-ion batteries 电纺丝Mn-Co氧化物嵌入碳纳米纤维作为高性能锌离子电池阴极的Mn/Co比调整

Q1 Materials Science

Materials Science for Energy Technologies

Pub Date : 2025-01-01 Epub Date: 2025-08-22 DOI: 10.1016/j.mset.2025.08.001

Adnan Ahmed , Amornrat Khampuanbut , Pinit Kidkhunthod , Wanwisa Limphirat , Hiroshi Uyama , Manunya Okhawilai , Prasit Pattananuwat

Manganese- and cobalt-based materials are considered promising cathode candidates for zinc-ion batteries (ZIBs) due to their environmental sustainability, high specific capacities, and the natural abundance of their constituent elements compared to those used in other metal-ion battery technologies. Nonetheless, their extensive utilization is impeded by sluggish kinetics and suboptimal durability. In addressing these challenges through nanostructure engineering, we present a novel approach by tailoring the Mn/Co ratio to synthesize MnCo₂O₄ (MCO) and CoMn₂O₄ (CMO) entrapped carbon nanofibers (CNFs) via the electrospinning technique and post-treatment. MCO-CNFs and CMO-CNFs exhibit excellent performance as zinc cathodes in ZIBs, achieving initial specific capacities of 501.94 mAh g⁻¹ and 399.32 mAh g⁻¹ at 0.05 A g⁻¹, respectively. CMO-CNFs demonstrate superior rate performance at high current densities, whereas MCO-CNFs exhibit better cycle stability. This complementary behavior highlights the tunable electrochemical characteristics enabled by Mn/Co ratio adjustment. Insightfully, the influence of the Mn/Co ratio on the electronic state of the elements and the electrochemical storage behavior of ZIBs during the charge/discharge process is convincingly explored using ex-situ techniques such as scanning electron microscopy and operando X-ray absorption near-edge structure, proving that MCO-CNFs are more stable and redox-reversible than CMO-CNFs.

与其他金属离子电池技术相比，锰基和钴基材料由于其环境可持续性、高比容量以及其组成元素的天然丰度而被认为是锌离子电池（zib）极有前途的阴极候选者。然而，它们的广泛利用受到缓慢的动力学和次优耐久性的阻碍。为了解决这些挑战，我们提出了一种新的方法，通过静电纺丝技术和后处理，通过调整Mn/Co比来合成MnCo2O4 （MCO）和CoMn2O4 （CMO）包裹的碳纳米纤维（CNFs）。MCO-CNFs和CMO-CNFs在zbs中表现出优异的锌阴极性能，在0.05 A g−1下分别达到501.94 mAh g−1和399.32 mAh g−1。CMO-CNFs在高电流密度下表现出优越的速率性能，而MCO-CNFs表现出更好的循环稳定性。这种互补行为突出了Mn/Co比例调节所实现的可调谐电化学特性。利用扫描电镜和operando x射线吸收近边结构等非原位技术，深入研究了Mn/Co比对元素电子态和zbs在充放电过程中的电化学存储行为的影响，证明了MCO-CNFs比cmos - cnfs更稳定、更氧化还原可逆。

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引用次数: 0

A review on green synthesis of TiO2 nanoparticles: enhancing DSSC performance and exploring future opportunities 二氧化钛纳米颗粒绿色合成研究进展：提高DSSC性能及展望未来

Q1 Materials Science

Materials Science for Energy Technologies

Pub Date : 2025-01-01 Epub Date: 2025-07-18 DOI: 10.1016/j.mset.2025.07.001

Muhammad , Nofrijon Sofyan , Akhmad Herman Yuwono , Donanta Dhaneswara

Global energy security has been destabilized by post-pandemic disruptions, geopolitical instability, and climate-related events, accelerating the need for sustainable alternatives such as solar technologies. Dye-sensitized solar cells (DSSCs), a cost-effective and environmentally friendly third-generation photovoltaic technology, have attracted significant research interest in recent decades, particularly in enhancing the properties of the photoanode material. This review emphasizes the role of green synthesis approaches as promising alternatives to conventional chemical methods. These eco-friendly strategies utilize biological compounds as reducing and capping agents, enabling better control over particle size and morphology, improving DSSC performance by enhancing electron transport properties and dye-loading capacity. However, product consistency and reproducibility issues remain significant challenges, particularly for scaling up and commercialization. This paper also outlines future directions, including extract fingerprinting, hybrid nanostructure development, and integrating artificial intelligence and machine learning for synthesis optimization. The green synthesis of TiO₂ nanoparticles holds strong potential for advancing DSSC performance while supporting the transition toward sustainable energy technologies.

全球能源安全受到流行病后中断、地缘政治不稳定和气候相关事件的影响，加速了对太阳能技术等可持续替代能源的需求。染料敏化太阳能电池（DSSCs）是一种具有成本效益和环境友好型的第三代光伏技术，近几十年来引起了人们极大的研究兴趣，特别是在提高光阳极材料的性能方面。这篇综述强调了绿色合成方法作为传统化学方法的有前途的替代品的作用。这些环保策略利用生物化合物作为还原和封盖剂，能够更好地控制颗粒大小和形态，通过增强电子传输特性和染料负载能力来改善DSSC性能。然而，产品一致性和可重复性问题仍然是重大挑战，特别是在扩大规模和商业化方面。本文还概述了未来的发展方向，包括提取指纹，混合纳米结构的发展，以及整合人工智能和机器学习进行合成优化。二氧化钛纳米颗粒的绿色合成在推进DSSC性能的同时支持向可持续能源技术的过渡具有强大的潜力。

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引用次数: 0

Exploration of acid-doped polyureas with redox-active aniline oligomers for supercapacitor applications 具有氧化还原活性苯胺低聚物的酸掺杂聚氨酯在超级电容器中的应用

Q1 Materials Science

Materials Science for Energy Technologies

Pub Date : 2025-01-01 Epub Date: 2025-07-22 DOI: 10.1016/j.mset.2025.07.002

Ermiya Prasad P. , Y.Ranjith Kumar , Sudhir D. Jagadale , Chepuri R.K. Rao , Sidhanath V. Bhosale

In the rapidly growing modern era, the advancement of electrochemical energy storage (EES) materials for electronic devices is a key challenge. Herein, we report the synthesis of novel redox-active polyureas (PUrs) bearing carbonyl functional group and repeated redox segments starting from the redox-active amine-capped trianiline (ACTA) and amine-capped tetraaniline (ACTAni). These materials are doped with 2 M HCl and designated as DPTA and DPTAni. The material properties and surface analysis are thoroughly analyzed by fourier transform infrared (FT-IR) spectroscopy, UV–Vis absorption spectroscopy, field emission-scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and Brunauer-Emmett-Teller (BET) techniques. In a three-electrode (3E) system, DPTA achieves a high specific capacitance (C_sp) of 260.9 F/g, outperforming DPTAni of 239 F/g, as determined by galvanostatic charge–discharge (GCD) measurements. However, long-term cycling stability exhibits the capacitance retention for DPTA and DPTAni was about 59.12 % and 46.38 %, respectively, for 2000 cycles and with a significant decrement of C_sp for 5000 cycles owing to an increase in the solution resistance, as confirmed by Electrochemical impedance spectroscopy (EIS). This study highlights the potential of carbonyl-functionalized PUrs as promising candidates for next-generation pseudo-capacitive materials, with further optimizations for enhancing cycling stability.

在快速发展的现代时代，电子器件的电化学储能材料的进步是一个关键的挑战。在此，我们报道了一种新型氧化还原活性聚氨酯（PUrs）的合成，该聚氨酯具有羰基官能团和从氧化还原活性胺盖三苯胺（ACTA）和胺盖四苯胺（ACTAni）开始的重复氧化还原段。这些材料以2m盐酸掺杂，分别命名为DPTA和DPTAni。采用傅里叶变换红外光谱（FT-IR）、紫外可见吸收光谱（UV-Vis）、场发射扫描电子显微镜（FE-SEM）、x射线衍射（XRD）和布鲁诺尔-埃米特-泰勒（BET）技术对材料的性能和表面分析进行了全面分析。在三电极（3E）系统中，DPTA实现260.9 F/g的高比电容（Csp），优于DPTAni的239 F/g，这是由恒流充放电（GCD）测量确定的。电化学阻抗谱（EIS）证实，在2000次循环时，DPTA和DPTAni的电容保持率分别为59.12%和46.38%，而在5000次循环时，由于溶液电阻的增加，Csp明显下降。这项研究强调了羰基功能化pur作为下一代伪电容性材料的潜力，并进一步优化以提高循环稳定性。

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引用次数: 0

Facile synthesis and electrochemical performance of bacterial cellulose/reduced graphene oxide/NiCo-layered double hydroxide composite film for self-standing supercapacitor electrode 用于自立式超级电容器电极的细菌纤维素/还原氧化石墨烯/镍钴层双氢氧化物复合薄膜的简便合成及其电化学性能

Q1 Materials Science

Materials Science for Energy Technologies

Pub Date : 2025-01-01 Epub Date: 2024-08-21 DOI: 10.1016/j.mset.2024.08.001

A. Muhammad Afdhal Saputra , Marpongahtun , Andriayani , Diana Alemin Barus , Ronn Goei , Alfred Tok , Muhammad Ibadurrahman , H.T.S Risky Ramadhan , Muhammad Irvan Hasibuan , Ton Peijs , Saharman Gea

This study employs a cost-efficient method to create a pliable BC/rGO-NiCo-LDH electrode film on a bacterial cellulose base. X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX) analyses verified the incorporation of reduced graphene oxide (rGO) and nickel–cobalt layered double hydroxide (NiCo-LDH) into the bacterial cellulose structure. The BC/rGO-NiCo-LDH composite material exhibited high-temperature stability and achieved a specific capacitance of 311 F g⁻¹ at a scan rate of 0.1 mV/s, surpassing that of earlier cellulose electrodes. The electrode film showed exceptional mechanical capabilities, displaying flexibility and load resistance without any structural damage. The film’s flexibility and lightweight properties were improved due to the low density of 0.656 g cm⁻³, which is a result of the nanoporous structure and intrinsic low density of rGO and cellulose. A retention ratio of 0.40 for storage modulus at a glass transition temperature of around 90°C demonstrated positive mechanical performance. This cost-effective and uncomplicated synthesis approach produced a BC/rGO-NiCo-LDH electrode with potential. The material possessed favourable mechanical and electrochemical characteristics, making it suitable for wearable electronics.

本研究采用一种经济高效的方法，在细菌纤维素基底上制作出柔韧的 BC/rGO-NiCo-LDH 电极膜。X 射线衍射 (XRD)、傅立叶变换红外光谱 (FTIR)、拉曼光谱、X 射线光电子能谱 (XPS) 和扫描电子显微镜与能量色散 X 射线光谱 (SEM-EDX) 分析验证了还原氧化石墨烯 (rGO) 和镍钴层状双氢氧化物 (NiCo-LDH) 与细菌纤维素结构的结合。BC/rGO-NiCo-LDH 复合材料具有高温稳定性，在 0.1 mV/s 的扫描速率下，比电容达到 311 F g-1，超过了早期的纤维素电极。该电极薄膜显示出卓越的机械性能，具有柔韧性和抗负载能力，且无任何结构损伤。由于 rGO 和纤维素具有纳米多孔结构和固有的低密度，薄膜的柔韧性和轻质特性得到了改善，密度低至 0.656 g cm-3。在 90°C 左右的玻璃转化温度下，储存模量的保持率为 0.40，这表明了良好的机械性能。这种具有成本效益且不复杂的合成方法产生了一种具有潜力的 BC/rGO-NiCo-LDH 电极。这种材料具有良好的机械和电化学特性，适合用于可穿戴电子设备。

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引用次数: 0

Evaluation of the addition of cement ash to the PVA/TEOS/HCl gel electrolyte on the performance of aluminium air batteries 评估在 PVA/TEOS/HCl 凝胶电解液中添加水泥灰对铝空气电池性能的影响

Q1 Materials Science

Materials Science for Energy Technologies

Pub Date : 2025-01-01 Epub Date: 2024-07-14 DOI: 10.1016/j.mset.2024.07.003

Firman Ridwan , Dandi Agusta , Muhammad Akbar Husin , Dahyunir Dahlan

Cement manufacturing presents substantial environmental challenges due to the volume of waste generated, including cement ash. Therefore, it is crucial to discover novel methods to utilize cement waste effectively. This study aimed to examine the impact of different concentrations of cement ash (1, 1.5, 2, and 2.5 g) on the conductivity of PVA/TEOS/HCl (PTH) gel electrolyte materials. The primary goal was to determine the ideal concentration of cement ash that would yield maximum conductivity. The research findings demonstrated that the PTH2.5CA sample attained the greatest conductivity of 2.78 mS/cm when adding 2.5 g of cement ash. In addition, this material exhibits a capacity of 0.354 mAh, a specific capacity of 0.12826 mAh/g, and a density capacity of 0.11813 mAh/cm². The power and power densities were measured as 6.48 mW/cm² and 25.94 mW, respectively. These findings offer promising prospects for implementing sustainable practices in the industry and highlight the viability of utilizing cement waste as a significant element in battery membrane materials. This technique addresses environmental issues related to cement waste and contributes to advancing a more eco-friendly waste management system.

水泥生产过程中会产生大量废物，包括水泥灰，这给环境带来了巨大挑战。因此，探索有效利用水泥废料的新方法至关重要。本研究旨在考察不同浓度的水泥灰（1、1.5、2 和 2.5 克）对 PVA/TEOS/HCl (PTH) 凝胶电解质材料电导率的影响。主要目标是确定能产生最大电导率的理想水泥灰浓度。研究结果表明，当加入 2.5 克水泥灰时，PTH2.5CA 样品的电导率最高，达到 2.78 mS/cm。此外，这种材料的容量为 0.354 mAh，比容量为 0.12826 mAh/g，密度容量为 0.11813 mAh/cm2。测得的功率密度和功率密度分别为 6.48 mW/cm2 和 25.94 mW。这些发现为在工业中实施可持续发展实践提供了广阔的前景，并凸显了利用水泥废料作为电池膜材料重要元素的可行性。这项技术解决了与水泥废料有关的环境问题，并有助于推进更环保的废料管理系统。

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引用次数: 0

Valorization of plastic waste for interfacial solar evaporation: A sustainable pathway towards clean water generation 用于界面太阳能蒸发的塑料废物的增值：通向清洁水产生的可持续途径

Q1 Materials Science

Materials Science for Energy Technologies

Pub Date : 2025-01-01 Epub Date: 2025-11-07 DOI: 10.1016/j.mset.2025.10.001

Shahd Sefelnasr , Maryam Nooman AlMallahi , Mahmoud Elgendi

Plastic pollution and water scarcity are urgent global challenges that demand sustainable solutions. Municipal solid waste (MSW), including plastic waste, is a crucial environmental challenge that contributes to global pollution and threatens ecosystems. MSW can be used in various applications beyond disposal, such as energy recovery systems, biogas production, the development of construction materials, and desalination. For instance, in interfacial solar evaporation (ISE), waste plastic efficiently produces water through solar-driven steam generation. Plastic materials possess properties such as low thermal conductivity and hydrophobicity that can enhance water evaporation efficiency. This review evaluates recent advances in plastic upcycling strategies and fabrication techniques for enhancing ISE. ISE systems using plastic garbage bags with direct repurposing reached a water evaporation rate of 8.96 kg⋅m⁻²⋅h⁻¹. Repurposing plastic waste into solar evaporators, transparent solar stills, and insulation materials significantly improves water evaporation efficiency. In addition, the integration of plastic waste in ISE contributes to multiple Sustainable Development Goals (SDGs), including Clean Water and Sanitation (SDG 6), Responsible Consumption and Production (SDG 12), and Climate Action (SDG 13). Furthermore, integrating waste management strategies with innovative water purification technologies enables scholars to assess the potential of waste plastic in advancing ISE for more sustainable water evaporation.

塑料污染和水资源短缺是迫切的全球挑战，需要可持续的解决方案。城市固体废物（MSW），包括塑料废物，是造成全球污染和威胁生态系统的重大环境挑战。除了处理之外，城市生活垃圾还可以用于各种应用，例如能源回收系统、沼气生产、建筑材料的开发和海水淡化。例如，在界面太阳能蒸发（ISE）中，废塑料通过太阳能驱动的蒸汽产生有效地产生水。塑料材料具有低导热性和疏水性等特性，可以提高水的蒸发效率。这篇综述评估了塑料升级回收策略和制造技术的最新进展，以提高ISE。采用塑料垃圾袋直接再利用的ISE系统水蒸发速率为8.96 kg⋅m−2⋅h−1。将塑料废物转化为太阳能蒸发器、透明太阳能蒸馏器和绝缘材料，可显著提高水的蒸发效率。此外，在ISE中整合塑料废物有助于实现多个可持续发展目标（SDG），包括清洁水和卫生（SDG 6），负责任的消费和生产（SDG 12）以及气候行动（SDG 13）。此外，将废物管理策略与创新的水净化技术相结合，使学者能够评估废塑料在推动ISE实现更可持续的水蒸发方面的潜力。

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引用次数: 0

Sustainable upcycling of spent potlining waste into grossular garnet materials for energy-related optoelectronic and ceramic applications 可持续升级回收废矿渣为能源相关光电和陶瓷应用的粗石榴石材料

Q1 Materials Science

Materials Science for Energy Technologies

Pub Date : 2025-01-01 Epub Date: 2025-12-07 DOI: 10.1016/j.mset.2025.11.001

Muhammad Suliman Khan , Xiping Chen , Yanhua Liu

The valorization of hazardous spent potlining (SPL) waste into functional ceramics remains a formidable challenge due to its thermodynamic inertness and structural heterogeneity. This study presents a novel mechanochemical–thermal synthesis route enabling phase-pure formation of (Ca₃Al₂(SiO₄)₃ grossular (GSR)) garnet directly from SPL, employing Na₂CO₃ and CaCO₃ as mineralizing additives. Post-synthesis calcination at 1200–1300 °C (at 25 °C intervals) for 5 h facilitated complete transformation into a highly ordered cubic Ia-3d garnet phase. Thermogravimetric analysis revealed sequential carbonate decomposition and volatile evolution above 1100 °C, while XRD confirmed sharp reflections characteristic of GSR garnet crystallinity. SEM analysis of the product exhibited dense, polygonal microstructures with minimal porosity and an average grain size of 2.8 µm. Elemental profiling revealed thermally activated incorporation of Ca, Al, and Si, with maximal oxide stabilization (Al₂O₃, CaO, and SiO₂). FTIR spectra showed distinct Si-O stretching (875–1083.5 cm⁻¹) and bending (529.88 cm⁻¹) modes, alongside Ca-O and Al-O lattice vibrations, confirming complete oxide incorporation. Optical spectroscopy indicated a strong UV absorption edge and an indirect bandgap of 4.86 eV, consistent with DFT-predicted 4.59 eV. First-principles calculations verified high thermodynamic stability (E₀ = −34347.433 eV, B₀ = 192.878 GPa, ΔH_f = -5755 kJ/mol) and a lattice parameter of a = 12.16 Å. The material exhibited strong UV absorption (5.6 × 10³ cm⁻¹), dielectric constant (ɛ₁ = 4.8), and refractive index (n = 1.8). This work pioneers a sustainable materials design strategy, merging waste remediation with the creation of optoelectronic garnet materials for next-generation energy-related optoelectronic and ceramic applications.

由于其热力学惰性和结构非均质性，将危险废potlining （SPL）废物转化为功能陶瓷仍然是一个艰巨的挑战。本研究提出了一种新的机械化学-热合成路线，利用Na2CO3和CaCO3作为矿化添加剂，直接从SPL中合成(Ca3Al2（SiO4)3粗晶石榴石（GSR））。合成后在1200-1300°C（间隔25°C）下煅烧5h有助于完全转变为高度有序的立方Ia-3d石榴石相。热重分析揭示了1100℃以上碳酸盐的连续分解和挥发性演化，XRD证实了GSR石榴石结晶度的明显反射特征。SEM分析表明，该产品具有致密的多边形微观结构，孔隙率最小，平均晶粒尺寸为2.8µm。元素分析显示Ca， Al和Si的热活化掺入，最大的氧化物稳定（Al2O3， CaO和SiO2）。FTIR光谱显示出明显的Si-O拉伸（875-1083.5 cm−1）和弯曲（529.88 cm−1）模式，以及Ca-O和Al-O晶格振动，证实了完全的氧化物掺入。光谱学分析表明，该材料具有较强的紫外吸收边，间接带隙为4.86 eV，与dft预测的4.59 eV一致。第一性原理计算证实了高的热力学稳定性（E0 =−34347.433 eV, B0 = 192.878 GPa， ΔHf = -5755 kJ/mol）和晶格参数a = 12.16 Å。该材料具有较强的紫外吸收能力（5.6 × 103 cm−1），介电常数（i = 4.8）和折射率（n = 1.8）。这项工作开创了可持续材料设计策略，将废物修复与光电石榴石材料的创造结合起来，用于下一代与能源相关的光电和陶瓷应用。

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引用次数: 0

Development of CdS/TNTA nanocomposite to improve performance of simultaneous electrocoagulation-photocatalysis process for hydrogen production and ciprofloxacin elimination 开发CdS/TNTA纳米复合材料以提高电凝光催化制氢和消除环丙沙星的性能

Q1 Materials Science

Materials Science for Energy Technologies

Pub Date : 2025-01-01 Epub Date: 2025-01-08 DOI: 10.1016/j.mset.2025.01.001

Reno Pratiwi , Muhammad Ibadurrohman , Eniya Listiani Dewi , Ratnawati , Rike Yudianti , Saddam Husein , Slamet

This study aimed to enhance the effectiveness of the simultaneous combination of electrocoagulation and photocatalysis processes by modifying the configuration of the photocatalyst. A heterojunction mechanism was developed by integrating CdS with a photocatalyst using a TiO₂ nanotube array (TNTA) [1]. This mechanism is designed to enhance photocatalytic efficiency by reducing electron-hole recombination. The successful synthesis of CdS/TNTA nanocomposite was confirmed using various characterization methods, including XRD, HRTEM, FESEM, UV–Vis DRS, PL, transient photocurrent, and XPS. The results showed that CdS/TNTA worked better than TNTA in a single photocatalysis process, achieving improved Ciprofloxacin (CIP) removal (7.9 % to 13.8 %) and hydrogen gas production (0.006 to 0.156 mmol/m²plate). Simultaneously operating electrocoagulation and photocatalysis systems in the respective optimized settings resulted in significant enhancements. Hydrogen gas yield increased by 44 % (from 443 to 636 mmol/m² plate) compared to using only TNTA, while CIP removal improved from 79 % to 83 %. This study demonstrates that the synthesis of CdS/TNTA photocatalysts may be a promising approach to achieving high performance of hydrogen recovery while simultaneously removing CIP from wastewater.

本研究旨在通过改变光催化剂的结构来提高电凝和光催化同时结合的效果。利用TiO2纳米管阵列（TNTA）[1]将CdS与光催化剂集成，形成了一种异质结机制。该机制旨在通过减少电子-空穴复合来提高光催化效率。通过XRD、HRTEM、FESEM、UV-Vis DRS、PL、瞬态光电流、XPS等表征方法，证实了CdS/TNTA纳米复合材料的成功合成。结果表明，在单次光催化过程中，CdS/TNTA比TNTA效果更好，环丙沙星（CIP）去除率提高了7.9% ~ 13.8%，氢气产量提高了0.006 ~ 0.156 mmol/m2。同时操作电凝和光催化系统在各自的优化设置导致显著增强。与仅使用TNTA相比，氢气产率提高了44%（从443到636 mmol/m2板），而CIP去除率从79%提高到83%。本研究表明，合成CdS/TNTA光催化剂可能是一种很有前途的方法，可以实现高效的氢气回收，同时去除废水中的CIP。

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