首页|S-scheme heterojunction construction of Fe/BiOCl/BiVO4 for enhanced photocatalytic degradation of ciprofloxacin

S-scheme heterojunction construction of Fe/BiOCl/BiVO4 for enhanced photocatalytic degradation of ciprofloxacin

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With the growing problem of water pollution caused by antibiotics,the development of photocatalysts with high photogenerated carrier separation efficiency is crucial.A high-efficiency microsphere Fe/BiOCl/BiVO4 with S-scheme heterojunction was synthesized by solvothermal method and its ciprofloxacin(CIP)degradation perfor-mance were investigated under visible light.XRD,FT-IR,SEM,EDS,HRTEM and XPS results show that the photocatalytic have good crystallization,morphology and the formed a microsphere.The photocatalytic perfor-mance of Fe/BiOCl/BiVO4 for CIP was superior to pure BiOCl and BiVO4 due to the microsphere and formed heterostructure between BiOCl and BiVO4.The influencing factors of CIP degradation by Fe/BiOCl/BiVO4 were investigated,and the results showed that Fe/BiOCl/BiVO4 had high degradation efficiency not only at pH 5-9,but also in the presence of inorganic Cl-,NO3-and metal ions.Under the optimal conditions,the degradation rate of CIP was up to 100%in 75 min.In addition to CIP,the Fe/BiOCl/BiVO4 photocatalysts degraded other organic pollutants,such as tetracycline,oxytetracycline,chlortetracycline,ofloxacin,levofloxacin,and rhodamine B,by more than 92%.The main active species were photogenerated holes(h+)and superoxide radicals(·O2-).In addition,possible intermediates and toxicity of intermediates were analyzed and five potential pathways for CIP degradation were proposed.

BiOCl/BiVO4Fe3 dopingOrganic pollutantPhotocatalysisS-scheme heterojunction

Guanlong Yu、Qifang Sun、Yi Yang、Si Chen、Yuannan Long、Yifu Li、Shiyong Ge、Dian Zheng

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School of Hydraulic and Environmental Engineering,Changsha University of Science&Technology,Changsha,410114,PR China

Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province,Changsha,410114,PR China

School of Environmental Engineering,Wuhan Textile University,Wuhan,430073,PR China

Scientific Research Projects of Ecology and Environment Department of HunanWater Conservancy Science and Technology Project of Hunan ProvinceWater Conservancy Science and Technology Project of Hunan ProvinceNational Natural Science Foundation of ChinaScientific Research Fund of Hunan Provincial Education Department

HBKT-2021012XSKJ2023059-37XSKJ2022068-035210016122A0206

2024

10.1016/j.pnsc.2024.02.018

自然科学进展·国际材料(英文)
国家自然科学基金委员会

自然科学进展·国际材料(英文)

影响因子：0.25
ISSN：1002-0071
年,卷(期)：2024.34(2)
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