Photocatalytic Degradation of PCB 153 Using Fe3O4@SiO2@TiO2-Co Core-Shell Nanocomposite

IF 1.9 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY ChemistrySelect Pub Date : 2024-12-02 DOI:10.1002/slct.202404470

B. Alshahrani, A. H. Korna, S. Fares, Montasir Salman

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Abstract

This study investigates the photocatalytic degradation of PCB 153 using Fe₃O₄@SiO₂@TiO₂-Co core-shell nanocomposites under LED irradiation. The unique core-shell structure, incorporating a magnetic Fe₃O₄ core, a protective SiO2 layer, and a photoactive TiO₂ shell doped with Co, enhances light absorption, charge separation, and stability. The effects of various parameters, including catalyst dosage, initial pollutant concentration, solution pH, H₂O₂ concentration, reaction time, and cosolvent type, were investigated to optimize the degradation process. The results demonstrated the high efficiency of the Fe₃O₄@SiO₂@TiO₂-Co nanocomposite in degrading PCB 153, with a maximum degradation efficiency of 95.2% under optimal conditions. The magnetic properties of the Fe₃O₄ core enable easy separation and recovery of the catalyst, making it a sustainable and cost-effective solution. This study provides valuable insights into the design and application of advanced photocatalysts for environmental remediation.

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Fe3O4@SiO2@TiO2-Co核壳复合材料光催化降解PCB 153

本文研究了Fe3O4@SiO2@TiO2-Co核壳纳米复合材料在LED照射下光催化降解PCB 153。独特的核壳结构，包括磁性Fe3O4核、保护性SiO2层和掺杂Co的光活性TiO2壳，增强了光吸收、电荷分离和稳定性。考察了催化剂用量、初始污染物浓度、溶液pH、H2O2浓度、反应时间、助溶剂类型等参数对降解工艺的影响。结果表明，Fe3O4@SiO2@TiO2-Co纳米复合材料对PCB 153的降解效率很高，在最佳条件下，降解效率最高可达95.2%。Fe3O4核心的磁性使催化剂易于分离和回收，使其成为一种可持续且具有成本效益的解决方案。本研究为环境修复中先进光催化剂的设计和应用提供了有价值的见解。

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来源期刊

ChemistrySelect Chemistry-General Chemistry

CiteScore

3.30

自引率

4.80%

发文量

1809

审稿时长

1.6 months

期刊介绍： ChemistrySelect is the latest journal from ChemPubSoc Europe and Wiley-VCH. It offers researchers a quality society-owned journal in which to publish their work in all areas of chemistry. Manuscripts are evaluated by active researchers to ensure they add meaningfully to the scientific literature, and those accepted are processed quickly to ensure rapid online publication.