Ag3PO4 Deposited on CuBi2O4 to Construct Z-Scheme Photocatalyst with Excellent Visible-Light Catalytic Performance Toward the Degradation of Diclofenac Sodium

Xiaojuan Chen; Chunmu Yu; Runliang Zhu; Ning Li; Jieming Chen; Shuai Li; Wei Xia; Song Xu; Hailong Wang; Xin Chen

doi:10.3390/nano9070959

Ag₃PO₄ Deposited on CuBi₂O₄ to Construct Z-Scheme Photocatalyst with Excellent Visible-Light Catalytic Performance Toward the Degradation of Diclofenac Sodium

Nanomaterials (Basel). 2019 Jun 30;9(7):959. doi: 10.3390/nano9070959.

Authors

Xiaojuan Chen^{1

2}, Chunmu Yu¹, Runliang Zhu³, Ning Li⁴, Jieming Chen^{1

5}, Shuai Li¹, Wei Xia¹, Song Xu¹, Hailong Wang¹, Xin Chen¹

Affiliations

¹ College of Environmental and Chemical Engineering, Foshan University, Foshan 528000, China.
² CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Material, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
³ CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Material, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. zhurl@gig.ac.cn.
⁴ CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510650, China. lining@ms.giec.ac.cn.
⁵ College of Transportation and Civil Architecture, Foshan University, Foshan 528225, China.

Abstract

CuBi₂O₄/Ag₃PO₄ was synthesized through a combination of hydrothermal synthesis and an in situ deposition method with sodium stearate as additives, and their textures were characterized with XRD, XPS, SEM/HRTEM, EDS, UV-Vis, and PL. Then, the photodegradation performance of CuBi₂O₄/Ag₃PO₄ toward the degradation of diclofenac sodium (DS) was investigated, and the results indicate that the degradation rate of DS in a CuBi₂O₄/Ag₃PO₄ (1:1) system is 0.0143 min^-1, which is 3.6 times that in the blank irradiation system. Finally, the photocatalytic mechanism of CuBi₂O₄/Ag₃PO₄ was discussed, which follows the Z-Scheme theory, and the performance enhancement of CuBi₂O₄/Ag₃PO₄ was attributed to the improved separation efficiency of photogenerated electron-hole pairs.

Keywords: CuBi2O4/Ag3PO4; Z-Scheme; photocatalytic mechanism; visible light.

Abstract

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