CdS/LaFeO3 heterojunctions with improved optical properties for visible-light catalytic applications

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外文摘要：Construction of heterojunctions is a normal and effective strategy to improve the photocatalytic per-formances of semiconductors,through which both the lifetime and the redox ability of electrons/holes can be improved,as compared to the respective component.On this basis,we constructed Z-scheme CdS/LaFeO3 heterojunctions(CdS/LFO),by in-situ growing different amounts of CdS on the surface of LaFeO3,for photocatalytic degradation of tetracycline hydrochloride(TC)in aqueous solution at room temper-ature.The crystal structure,surface morphology and optoelectronic properties of the CdS/LFO hetero-junctions were systemically characterized to correlate the reaction activity.Photocatalytic tests indicate that the CdS/LFO heterojunctions exhibit promising activity for TC degradation under visible light irra-diation(λ≥ 420 nm),with 85％TC conversion obtained at reaction time of 45 min,which is 3.4 and 1.9 times higher than that of CdS and LaFeO3.The CdS/LFO heterojunctions are also stable in the reaction and can be reused for four cycles with no appreciable activity loss.The applicability of CdS/LFO to photo-catalytic degradation of organic dyes,as well as the reaction mechanism,was also explored.

外文关键词：

LaFeO3CdSPhotocatalytic degradationTetracycline hydrochlorideReaction mechanismRare earths

作者：

Jiaqi Wei、Wen Zhu、Xuelian Xu、Xiao Xu、Junjiang Zhu

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作者单位：

Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing,College of Chemistry and Chemical Engineering,Wuhan Textile University Chemistry,Wuhan,430200,China

基金：

国家自然科学基金国家自然科学基金湖北省科技厅项目湖北省教育厅项目Opening Project of Hubei Key Laboratory of Biomass Fibers and Ecodyeing & Finishing

项目编号：

21976141422774852021CFA034T2020011STRZ202202

出版年：

2024

DOI：

10.1016/j.jre.2023.04.018

稀土学报(英文版)

中国稀土学会

稀土学报(英文版)

CSTPCDEI

影响因子：1.3

ISSN：1002-0721

年,卷(期)：2024.42(5)

参考文献量46