Novel 2D SnNb2O6/Ag3VO4 S-scheme heterojunction with enhanced visible-light photocatalytic activity

doi:10.1016/j.ceramint.2020.11.070

	Novel 2D SnNb2O6/Ag3VO4 S-scheme heterojunction with enhanced visible-light photocatalytic activity
	Li, Xiaofeng 1; Hu, Taiping 1,2,3; Zhang, Jinfeng 1; Dai, Kai 1,4; Liang, Changhao 2,3
刊名	CERAMICS INTERNATIONAL
	2021-03-01
卷号	47
关键词	Step-scheme SnNb2O6 Ag3VO4 Photocatalytic degradation Methylene blue
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2020.11.070
通讯作者	Dai, Kai(daikai940@chnu.edu.cn) ; Liang, Changhao(chliang@issp.ac.cn)
英文摘要	At present, photocatalytic technology for degradation of organic matter is a promising water treatment technology. Two-dimensional (2D) nanomaterials are getting more and more attention based on unique physical and chemical properties. In this work, 2D SnNb2O6 nanosheets were prepared by hydrothermal method, and then Ag3VO4 was loaded on the surface of SnNb2O6 nanosheets by chemical deposition to form a compact and stable step-scheme (S-scheme) heterostructure. S-scheme system not only efficiently separated the charge carriers spatially, but also retained the electrons with higher reduction ability and holes with higher oxidation ability. Therefore, the novel SnNb2O6/Ag3VO4 S-scheme heterojunction shows the best photocatalytic activity, which is much better than pristine SnNb2O6 and Ag3VO4. The constant K-app of SnNb2O6/Ag3VO4 heterojunction is calculated to be 0.2256 min(-1), which is 16.2 and 1.6 folds higher than that of the pristine SnNb2O6 (0.0139 min(-1)) and Ag3VO4 (0.1395 min(-1)), respectively. Moreover, the SnNb2O6/Ag3VO4 heterojunction maintains good photostability in 3 cycles.
资助项目	NSFC[51572103] ; NSFC[51973078] ; Distinguished Young Scholar of Anhui Province[1808085J14] ; Major projects of Education Department of Anhui Province[KJ2020ZD005] ; Key Foundation of Educational Commission of Anhui Province[KJ2019A0595]
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000615226700002
资助机构	NSFC ; Distinguished Young Scholar of Anhui Province ; Major projects of Education Department of Anhui Province ; Key Foundation of Educational Commission of Anhui Province
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/120577]
专题	中国科学院合肥物质科学研究院
通讯作者	Dai, Kai; Liang, Changhao
作者单位	1.Huaibei Normal Univ, Anhui Prov Key Lab Pollutant Sensit Mat & Environ, Key Lab Green & Precise Synthet Chem & Applicat, Minist Educ,Sch Phys & Elect Informat, Huaibei 235000, Anhui, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 3.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Hefei 230031, Peoples R China 4.Anhui Univ, Minist Educ, Key Lab Struct & Funct Regulat Hybrid Mat, Hefei 230601, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiaofeng,Hu, Taiping,Zhang, Jinfeng,et al. Novel 2D SnNb2O6/Ag3VO4 S-scheme heterojunction with enhanced visible-light photocatalytic activity[J]. CERAMICS INTERNATIONAL,2021,47.
APA	Li, Xiaofeng,Hu, Taiping,Zhang, Jinfeng,Dai, Kai,&Liang, Changhao.(2021).Novel 2D SnNb2O6/Ag3VO4 S-scheme heterojunction with enhanced visible-light photocatalytic activity.CERAMICS INTERNATIONAL,47.
MLA	Li, Xiaofeng,et al."Novel 2D SnNb2O6/Ag3VO4 S-scheme heterojunction with enhanced visible-light photocatalytic activity".CERAMICS INTERNATIONAL 47(2021).