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

文献类型：期刊论文

作者Li, Yaoyu2,3,4; Li, Rong2,3,4; Zhai, Yue3,4; Huang, Yu3,4; Lee, Shuncheng1; Cao, Junji3,4
刊名APPLIED SURFACE SCIENCE
出版日期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
DOI10.1016/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.
WOS关键词SELF-SACRIFICIAL SYNTHESIS ; MECHANICAL ENERGY ; DEGRADATION ; NO ; NANOSTRUCTURES ; PERFORMANCE ; NANOWIRES ; SOLAR ; TETRACYCLINE ; EFFICIENCY
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研究方向Chemistry ; Materials Science ; Physics
语种英语
WOS记录号WOS:000728487400001
出版者ELSEVIER
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
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
第四纪科学与全球变化卓越创新中心
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.

入库方式： OAI收割

来源：地球环境研究所

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