Enhancing Fe2O3/Bi2O3 performance for antibiotic photodegradation by combining with waste tire-derived activated carbon and visible-light-induced activation of peroxydisulfate: Effect of composition and initial pH, and evaluation of H2 production

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-03-17 DOI:10.1016/j.jwpe.2025.107501

Salwan Obaid Waheed Khafaji , Ali B. M. Ali , Abdul Amir H. Kadhum , M.A. Diab , Heba A. El-Sabban , Abdulrahman A. Almehizia , Ergash Bobobekov

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Abstract

The integration of photocatalysts with activated carbon (AC) and the visible-light-induced activation of peroxydisulfate offers a promising strategy for enhancing degradation processes, with significant potential for advanced environmental remediation and sustainable pollution control. Herein, a novel waste tire-derived activated carbon (T-AC)-based photocatalyst was synthesized with varying Fe₂O₃/Bi₂O₃ (FeB) weight ratios of 20, 30, and 40 wt% to evaluate its performance on cefixime (CFX) photodegradation using peroxydisulfate (PDS) as a sulfate radical precursor. Also, H₂ production utilizing aforementioned photocatalyst were examined. The influence of the initial solution pH (5–9) was investigated to optimize photocatalytic efficiency. Characterization of the materials was performed using BET, XRD, FE-SEM, UV–Vis, TEM, PL, Photocurrent, Mott-Schottky, and ESR analyses. The presence of PDS significantly enhanced the photodegradation efficiency of CFX, improving it from 85.32 % to 99.91 %. In addition, CFX mineralization of 82.34 % revealed the efficiency of the prepared composite. Optimal degradation conditions were found at a pH of 7. Trapping experiments further revealed the significant contribution of hydroxyl (^•OH), superoxide (^•O₂⁻), and sulfate (^•SO₄⁻) radicals in the photodegradation process. The incorporation of Fe₂O₃ and Bi₂O₃ onto T-AC, a cost-effective support, significantly enhances their degradation efficiency and H₂ production by improving charge separation, active site dispersion, and pollutant adsorption capacity.

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光催化剂与活性炭（AC）的结合以及可见光诱导的过硫酸盐活化为增强降解过程提供了一种前景广阔的策略，在先进的环境修复和可持续污染控制方面具有巨大潜力。本文合成了一种新型的基于废轮胎衍生活性炭（T-AC）的光催化剂，Fe2O3/Bi2O3（FeB）的重量比分别为 20、30 和 40 wt%，以过氧化二硫酸盐（PDS）作为硫酸根自由基前体，评估其对头孢克肟（CFX）光降解的性能。此外，还考察了利用上述光催化剂产生 H2 的情况。研究了初始溶液 pH 值（5-9）对优化光催化效率的影响。利用 BET、XRD、FE-SEM、UV-Vis、TEM、PL、Photocurrent、Mott-Schottky 和 ESR 分析对材料进行了表征。PDS 的存在大大提高了 CFX 的光降解效率，从 85.32% 提高到 99.91%。此外，82.34 % 的 CFX 矿化率也显示了所制备复合材料的效率。诱捕实验进一步揭示了羟基（-OH）、超氧自由基（-O2-）和硫酸根自由基（-SO4-）在光降解过程中的重要作用。通过改善电荷分离、活性位点分散和污染物吸附能力，将 Fe2O3 和 Bi2O3 添加到 T-AC 这种具有成本效益的支持物上可显著提高其降解效率和 H2 产出量。

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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