Photocatalytic performance and mechanism of Z-Scheme CuBi2O4/Ag3PO4 in the degradation of diclofenac sodium under visible light irradiation: Effects of pH, H2O2, and S2O82-

doi:10.1016/j.scitotenv.2019.134643

GIEC OpenIR

	Photocatalytic performance and mechanism of Z-Scheme CuBi2O4/Ag3PO4 in the degradation of diclofenac sodium under visible light irradiation: Effects of pH, H2O2, and S2O82-
	Chen, Xiaojuan 1,2; Yu, Chunmu 1; Zhu, Runliang 2,3; Li, Ning 4; Chen, Jieming 1,5; Lin, Qiujuan 1; Xu, Song 1; Chen, Xin 1; Wang, Hailong 1
	2020-04-01
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	711 页码:12
通讯作者	Zhu, Runliang(zhurl@gig.ac.cn) ; Li, Ning(lining@ms.giec.ac.cn)
摘要	Highly efficient visible-light-responsive Z-Scheme CuBi2O4/Ag3PO4 photocatalysts were prepared by a hydrothermal synthesis and in-situ deposition method and characterized comprehensively. Under visible-light irradiation, the photocatalytic performance of CuBi2O4/Ag3PO4 in the degradation of diclofenac sodium (DS) in aqueous solutions was studied under different conditions such as different catalyst composition, solution pH, and concentration of S2O82- or H2O2, and the response surface methodology (RSM) was used to analyze the interaction effect of the parameters. The optimal activity of CuBi2O4/Ag3PO4 was achieved at the mass ratio of 3:7 and pH of 4.42. Moreover, the introduced S2O82- could significantly enhance the catalytic activity of CuBi2O4/Ag3PO4; when 1 mM S2O82- was added to the catalytic system, 10 mg/L of DS could be completely degraded within 60 min, but the structure of CuBi2O4/Ag3PO4 was severely destroyed. While when H2O2 was introduced into the system, both the activity and stability of CuBi2O4/Ag3PO4 were improved significantly. Finally, the photodegradation pathway of DS is proposed and the photocatalytic mechanism of CuBi2O4/Ag3PO4 under different conditions is explained. CuBi2O4/Ag(3)PO(4)and CuBi2O4/Ag3PO4 (S2O82-) photocatalytic systems follow the Z-Scheme theory, and Ag formed on the surface of catalyst serves as the recombination center for the photogenerated e from the conduction band (CB) of Ag3PO4 and h(+) from the valence band (VB) of CuBi2O4; meanwhile, the catalytic degradation of DS by CuBi2O4/Ag3PO4 in the presence of H2O2 follows the heterojunction energy band theory. (C) 2019 Elsevier B.V. All rights reserved.
关键词	CuBi2O4/Ag3PO4 composite Photocatalysis Diclofenac sodium Photodegradation Pollutant
DOI	10.1016/j.scitotenv.2019.134643
关键词[WOS]	HETEROGENEOUS ACTIVATION ; SPHERICAL CUBI2O4 ; WATER ; PEROXYMONOSULFATE ; COMPOSITE ; REMOVAL ; AG3PO4 ; SEMICONDUCTOR ; NANOCOMPOSITE ; PERSULFATE
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51708116] ; Doctoral Fund of Ministry of Education of China[2019M663139] ; 13th Five-Year Plan of Educational Science in Guangdong Provincespecial Innovation Projects (Natural Science)[2018KTSCX243] ; Science and Technology Planning Project of Guangdong Province, China[2017B030314175] ; Scientific Research Foundation for High-level Talents of Foshan University[gg07014]
WOS研究方向	Environmental Sciences & Ecology
项目资助者	National Natural Science Foundation of China ; Doctoral Fund of Ministry of Education of China ; 13th Five-Year Plan of Educational Science in Guangdong Provincespecial Innovation Projects (Natural Science) ; Science and Technology Planning Project of Guangdong Province, China ; Scientific Research Foundation for High-level Talents of Foshan University
WOS类目	Environmental Sciences
WOS记录号	WOS:000509344700101
出版者	ELSEVIER
引用统计	被引频次：50[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/26607
专题	中国科学院广州能源研究所
通讯作者	Zhu, Runliang; Li, Ning
作者单位	1.Foshan Univ, Coll Environm & Chem Engn, Foshan 528000, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 3.Guangzhou Inst Geochem, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510650, Peoples R China 5.Foshan Univ, Coll Transportat & Civil Architecture, Foshan 528225, Peoples R China
推荐引用方式 GB/T 7714	Chen, Xiaojuan,Yu, Chunmu,Zhu, Runliang,et al. Photocatalytic performance and mechanism of Z-Scheme CuBi2O4/Ag3PO4 in the degradation of diclofenac sodium under visible light irradiation: Effects of pH, H2O2, and S2O82-[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,711:12.
APA	Chen, Xiaojuan.,Yu, Chunmu.,Zhu, Runliang.,Li, Ning.,Chen, Jieming.,...&Wang, Hailong.(2020).Photocatalytic performance and mechanism of Z-Scheme CuBi2O4/Ag3PO4 in the degradation of diclofenac sodium under visible light irradiation: Effects of pH, H2O2, and S2O82-.SCIENCE OF THE TOTAL ENVIRONMENT,711,12.
MLA	Chen, Xiaojuan,et al."Photocatalytic performance and mechanism of Z-Scheme CuBi2O4/Ag3PO4 in the degradation of diclofenac sodium under visible light irradiation: Effects of pH, H2O2, and S2O82-".SCIENCE OF THE TOTAL ENVIRONMENT 711(2020):12.