新型p-Cu2O@n-CeO2敏化n-ZnS的研究：ZnS:CeO2:Cu2O比例的影响，促进了阴离子和阳离子染料的吸附-太阳能辅助光降解，以及抗菌活性

IF 6.7 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-09-16 DOI:10.1016/j.jwpe.2025.108762

Heba Ali

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引用次数: 0

摘要

本研究首次考察了n-CeO2单独或与p-Cu2O联合修饰n-ZnS对新型ZnS/CeO2/Cu2O三异质结修复有机染料（CR， CV， MB, RhB）和抗菌活性的影响。首先用不同比例的水热制备的n-CeO2对ZnS进行修饰，形成ZnS/CeO2二元结构（ZC2:1, ZC1:1, ZC1:2, ZC1:4）。随后，合成了p-Cu2O作为ZC1:2二元结构的第二改性剂，制备了ZC1:2Cu0.5、ZC1:2Cu1、ZC1:2Cu1.5、ZC1:2Cu2和ZC1:2Cu3三元ZnS/CeO2/Cu2O纳米复合材料。采用XRD、XPS、EDX、HRTEM、UV-Vis、PL、BET等方法对样品进行表征。ZC1:2Cu1三异质结的带隙明显减小（2.18 eV），比表面积大，电子-空穴分离特性增强。ZC1:2Cu1对浓阴离子CR染料（100 mg/L）的去除率为98.2%，具有良好的吸附和光降解特性，且具有良好的可重复使用性。10 mg/L CV对阳离子染料的降解率为90.1%，10 mg/L MB为85.7%，5 mg/L RhB为93.7%。莫特-肖特基图确定了半导体的VB和CB位置；据此，提出了ZC1:2Cu1光催化染料破坏的合理机理。ZC1:2Cu1的抑菌活性明显高于ZnS和ZC1:2。

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Investigation on novel p-Cu2O@n-CeO2 sensitized n-ZnS: Influence of ZnS:CeO2:Cu2O ratio, boosted adsorptive-solar assisted photo-degradation for anionic and cationic dyes, and antimicrobial activity

This study examines the influence of modifying n-ZnS with n-CeO₂ alone or in combination with p-Cu₂O to develop novel ZnS/CeO₂/Cu₂O triheterojunctions for superior remediation of organic dyes (CR, CV, MB, RhB) and antimicrobial activity for the first time. ZnS was initially modified with hydrothermally prepared n-CeO₂ in different ratios to create ZnS/CeO₂ binary structures (ZC2:1, ZC1:1, ZC1:2, ZC1:4). Subsequently, p-Cu₂O was synthesized as a second modifier for the optimal ZC1:2 binary structure to prepare new ternary ZnS/CeO₂/Cu₂O nanocomposites (ZC1:2Cu0.5, ZC1:2Cu1, ZC1:2Cu1.5, ZC1:2Cu2 and ZC1:2Cu3). The samples were characterized using XRD, XPS, EDX, HRTEM, UV–Vis, PL, and BET analysis. ZC1:2Cu1 triheterojunction exhibited a significant reduction in the bandgap (2.18 eV), a large surface area, and enhanced electron-hole separation character. ZC1:2Cu1 demonstrated 98.2 % removal efficiency for concentrated anionic CR dye (100 mg/L) based on the adsorption and photodegradation characteristics with good reusability. The degradation for cationic dyes were 90.1 % for 10 mg/L CV, 85.7 % for 10 mg/L MB, and 93.7 % for 5 mg/L RhB. Mott-Schottky plots determined semiconductors' VB and CB positions; accordingly, a plausible mechanism for photocatalytic dye destruction over ZC1:2Cu1 has been proposed. Finally, ZC1:2Cu1 exhibited enhanced antimicrobial activity relative to ZnS and ZC1:2.

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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