Construction of a novel coffee husk-derived biochar-supported Ce2Sn2O7-Sb2O3 composites for enhanced visible light-driven photocatalytic degradation of metronidazole and H2 production

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-05-15 DOI:10.1016/j.jwpe.2025.107935

Ismail Marouani , Waqed H. Hassan , Pradeep Kumar Singh , Mudassir Hasan , Mohamed Boujelbene , Ibrahm Mahariq , Phongpichit Channuie , Farruh Atamurotov , Jureeporn Yuennan , M.A. Diab

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引用次数: 0

Abstract

The integration of biomass-derived carbon materials with advanced photocatalysts enables sustainable environmental remediation and clean energy production. Herein, a novel Ce₂Sn₂O₇– Sb₂O₃/biochar (CSOSB/BC) S-scheme heterojunction photocatalyst was synthesized via a combination of wet-impregnation and hydrothermal method for visible-light-driven metronidazole (MTZ) degradation and hydrogen evolution. XRD, FTIR, XPS, and Raman, confirmed the formation of a well-dispersed heterostructure with strong interfacial interactions, enhancing charge transfer and reactivity. Electrochemical impedance spectroscopy (EIS), transient photocurrent response, and Tauc plots, demonstrated the significant role of biochar in enhancing photocatalytic performance. These analyses confirmed that biochar improves charge separation, facilitates electron transfer, and boosts reactive oxygen species generation, ultimately leading to higher efficiency in MTZ degradation. Under optimized conditions, the CSOSB/BC composite achieved 95 % MTZ degradation and 700 μmol g⁻¹H₂ production under visible-light illumination. The effects of catalyst dosage, pollutant concentration, and pH were systematically evaluated. Also, LC-MS analysis revealed multiple ring-cleavage intermediates, with toxicity assessment confirming a significant reduction in environmental hazards. The composite exhibited excellent stability, maintaining 86 % activity after six cycles with preserved crystallinity and chemical integrity. These findings establish CSOSB/BC as a high-performance, durable, and scalable photocatalyst, offering a promising solution for pharmaceutical wastewater treatment and sustainable hydrogen production with minimal ecological risks.

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新型咖啡壳生物炭负载Ce2Sn2O7-Sb2O3复合材料的构建，用于增强可见光驱动光催化降解甲硝唑和产氢

将生物质衍生碳材料与先进的光催化剂相结合，可以实现可持续的环境修复和清洁能源生产。采用湿浸渍和水热相结合的方法合成了一种新型Ce₂Sn₂O₇- Sb₂O₃/生物炭（CSOSB/BC） s型异质结光催化剂，用于可见光驱动甲硝唑（MTZ）降解和析氢。XRD、FTIR、XPS和Raman等测试结果证实，该材料形成了分散良好的异质结构，具有强的界面相互作用，增强了电荷转移和反应活性。电化学阻抗谱（EIS）、瞬态光电流响应和Tauc图显示了生物炭在提高光催化性能方面的显著作用。这些分析证实，生物炭改善了电荷分离，促进了电子转移，促进了活性氧的产生，最终提高了MTZ降解的效率。在优化条件下，CSOSB/BC复合材料在可见光照射下，MTZ降解率达到95%，产氢量达到700 μmol g−1H 2。系统评价了催化剂用量、污染物浓度、pH值等因素的影响。此外，LC-MS分析发现了多种环裂解中间体，毒性评估证实了对环境危害的显着降低。复合材料表现出优异的稳定性，在6次循环后仍保持86%的活性，并保持结晶度和化学完整性。这些研究结果表明，CSOSB/BC是一种高性能、耐用、可扩展的光催化剂，为制药废水处理和可持续制氢提供了一种有前景的解决方案，且生态风险最小。

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies