Photocatalytic and Photo-Fenton Catalytic Degradation Activities of Z-Scheme Ag2S/BiFeO3 Heterojunction Composites under Visible-Light Irradiation

doi:10.3390/nano9030399

CORC > 兰州理工大学 > 兰州理工大学 > 机电工程学院

	Photocatalytic and Photo-Fenton Catalytic Degradation Activities of Z-Scheme Ag2S/BiFeO3 Heterojunction Composites under Visible-Light Irradiation
	Di, Lijing 1,2; Yang, Hua 1; Xian, Tao 2; Liu, Xueqin 3; Chen, Xiujuan 1
刊名	NANOMATERIALS
	2019-03-09
卷号	9 期号:3
关键词	polyhedral BiFeO3 particles Ag2S nanoparticles Z-scheme Ag2S BiFeO3 heterojunction photocatalysis photo-Fenton catalysis
ISSN号	2079-4991
DOI	10.3390/nano9030399
英文摘要	Z-scheme Ag2S/BiFeO3 heterojunction composites were successfully prepared through a precipitation method. The morphology and microstructure characterization demonstrate that Ag2S nanoparticles (30-50 nm) are well-decorated on the surfaces of polyhedral BiFeO3 particles (500-800 nm) to form Ag2S/BiFeO3 heterojunctions. The photocatalytic and photo-Fenton catalytic activities of the as-derived Ag2S/BiFeO3 heterojunction composites were evaluated by the degradation of methyl orange (MO) under visible-light irradiation. The photocatalytic result indicates that the Ag2S/BiFeO3 composites exhibit much improved photocatalytic activities when compared with bare Ag2S and BiFeO3. The optimum composite sample was observed to be 15% Ag2S/BiFeO3 with an Ag2S mass fraction of 15%. Furthermore, the addition of H2O2 can further enhance the dye degradation efficiency, which is due to the synergistic effects of photo- and Fenton catalysis. The results of photoelectrochemical and photoluminescence measurements suggest a greater separation of the photoexcited electron/hole pairs in the Ag2S/BiFeO3 composites. According to the active species trapping experiments, the photocatalytic and photo-Fenton catalytic mechanisms of the Ag2S/BiFeO3 composites were proposed and discussed.
资助项目	Chongqing Research Program of Basic Research and Frontier Technology[cstc2015jcyjA50033]
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	MDPI
WOS记录号	WOS:000464432300003
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32040]
专题	机电工程学院理学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Yang, Hua; Xian, Tao
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China 2.Qinghai Normal Univ, Coll Phys & Elect Informat Engn, Xining 810008, Qinghai, Peoples R China 3.Chongqing Univ Technol, Sch Sci, Chongqing 4000054, Peoples R China
推荐引用方式 GB/T 7714	Di, Lijing,Yang, Hua,Xian, Tao,et al. Photocatalytic and Photo-Fenton Catalytic Degradation Activities of Z-Scheme Ag2S/BiFeO3 Heterojunction Composites under Visible-Light Irradiation[J]. NANOMATERIALS,2019,9(3).
APA	Di, Lijing,Yang, Hua,Xian, Tao,Liu, Xueqin,&Chen, Xiujuan.(2019).Photocatalytic and Photo-Fenton Catalytic Degradation Activities of Z-Scheme Ag2S/BiFeO3 Heterojunction Composites under Visible-Light Irradiation.NANOMATERIALS,9(3).
MLA	Di, Lijing,et al."Photocatalytic and Photo-Fenton Catalytic Degradation Activities of Z-Scheme Ag2S/BiFeO3 Heterojunction Composites under Visible-Light Irradiation".NANOMATERIALS 9.3(2019).