Improved photocatalytic activity of BaTiO3/La2Ti2O7 heterojunction composites via piezoelectric-enhanced charge transfer

doi:10.1016/j.apsusc.2021.151146

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Improved photocatalytic activity of BaTiO3/La2Ti2O7 heterojunction composites via piezoelectric-enhanced charge transfer
	Li, Yaoyu 2,3,4; Li, Rong 2,3,4; Zhai, Yue 3,4; Huang, Yu 3,4; Lee, Shuncheng 1; Cao, Junji 3,4
刊名	APPLIED SURFACE SCIENCE
	2021-12-30
卷号	570 页码:9
关键词	Piezo-photocatalysis Heterojunction Polarization electric field Interface charge transfer Reaction mechanism Ciprofloxacin degradation
ISSN号	0169-4332
DOI	10.1016/j.apsusc.2021.151146
通讯作者	Huang, Yu(huangyu@ieecas.cn)
英文摘要	The separation efficiency of photogenerated carriers in photocatalysis is one of the key factors limiting the overall performance. The polarization field modification of piezoelectric materials is considered to be an effective strategy to regulate their photocatalytic performance. In this study, novel heterojunction photocatalysts that combine piezoelectric BaTiO3 nanorods and La2Ti2O7 nanosheets were synthesized and the polarization electric field promoted the bulk charge separation, while regulating the migration and separation of the carriers at the heterojunction interface. Under the combined action of visible light and ultrasonic, the piezo-photocatalytic degradation efficiency of CIP over BaTiO3/La2Ti2O7 composites increased by 24% and 12.5% compared with its photocatalytic and piezocatalytic degradation efficiency, respectively. Furthermore, the finite element simulation shows that BaTiO3/La2Ti2O7 heterojunctions have a stronger piezoelectric potential difference compared to pure BaTiO3. Our findings provide insights into the development of piezo-photocatalysts that can effectively degrade pollutants under visible light.
资助项目	National Key Research and Develop ment Program of China, China[2016YFA0203000] ; Strategic Priority Research Program of the Chinese Academy of Sciences, China[XDA23010300] ; Strategic Priority Research Program of the Chinese Academy of Sciences, China[XDA23010000] ; National Science Foundation of China, China[51878644] ; National Science Foundation of China, China[41573138] ; Plan for National Youth Talents of the Organization Department of the Central Committee
WOS关键词	SELF-SACRIFICIAL SYNTHESIS ; MECHANICAL ENERGY ; DEGRADATION ; NO ; NANOSTRUCTURES ; PERFORMANCE ; NANOWIRES ; SOLAR ; TETRACYCLINE ; EFFICIENCY
WOS研究方向	Chemistry ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000728487400001
资助机构	National Key Research and Develop ment Program of China, China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; National Science Foundation of China, China ; Plan for National Youth Talents of the Organization Department of the Central Committee
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/17299]
专题	地球环境研究所_粉尘与环境研究室
通讯作者	Huang, Yu
作者单位	1.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 4.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Li, Yaoyu,Li, Rong,Zhai, Yue,et al. Improved photocatalytic activity of BaTiO3/La2Ti2O7 heterojunction composites via piezoelectric-enhanced charge transfer[J]. APPLIED SURFACE SCIENCE,2021,570:9.
APA	Li, Yaoyu,Li, Rong,Zhai, Yue,Huang, Yu,Lee, Shuncheng,&Cao, Junji.(2021).Improved photocatalytic activity of BaTiO3/La2Ti2O7 heterojunction composites via piezoelectric-enhanced charge transfer.APPLIED SURFACE SCIENCE,570,9.
MLA	Li, Yaoyu,et al."Improved photocatalytic activity of BaTiO3/La2Ti2O7 heterojunction composites via piezoelectric-enhanced charge transfer".APPLIED SURFACE SCIENCE 570(2021):9.