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题名: Influence of the Electrostatic Interaction between a Molecular Catalyst and Semiconductor on Photocatalytic Hydrogen Evolution Activity in Cobaloxime/CdS Hybrid Systems
作者: Xu, Yuxing1, 2, 3, 4;  Chen, Ruotian1, 2, 3, 4;  Li, Zhen1, 2, 3, 4;  Li, Ailong1, 2, 3, 4;  Han, Hongxian1, 2, 3;  Li, Can1, 2, 3
关键词: electrostatic interaction ;  cobaloxime ;  cadmium sulfide (CdS) ;  photocatalytic hydrogen evolution ;  charge transfer
刊名: ACS APPLIED MATERIALS & INTERFACES
发表日期: 2017-07-12
DOI: 10.1021/acsami.7b06154
卷: 9, 期:27, 页:23230-23237
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Science & Technology - Other Topics ;  Materials Science
英文摘要: The influence of the electrostatic interaction on photocatalytic H-2 evolution activity in cobaloxime/cadmium sulfide (CdS) hybrid systems was studied by measuring the charges of the cobaloximes and the zeta potentials of CdS under different pH conditions (pHs 4-7). Cobaloxime/CdS hybrid systems may have potential as a valid model for the investigation of the electrostatic interaction between a molecular catalyst and semiconductor because the kinetics of methanol oxidation and the driving force of electron transfer from photoirradiated CdS to cobaloxime have little effect on the pH-dependent photocatalytic H-2 evolution activity. Our experimental results suggest that electrostatic repulsion between cobaloxime and CdS disfavors the electron transfer from CdS to cobaloxime and hence lowers the photocatalytic H-2 evolution activity. Whereas, electrostatic attraction favors the electron transfer process and enhances the photocatalytic H-2 evolution activity. However, an electrostatic attraction interaction that is too strong may accelerate both forward and backward electron transfer processes, which would reduce charge separation efficiency and lower photocatalytic H-2 evolution activity.
关键词[WOS]: AQUEOUS-SOLUTIONS ;  NICKEL-CATALYST ;  COBALT CATALYST ;  CADMIUM-SULFIDE ;  SURFACE-CHARGE ;  H-2 PRODUCTION ;  CO2 REDUCTION ;  QUANTUM DOTS ;  PK(A) VALUES ;  CDSE QUANTUM
语种: 英语
WOS记录号: WOS:000405764700120
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/150113
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Dalian Natl Lab Clean Energy, Div Solar Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China
3.Collaborat Innovat Ctr Chem Energy Mat iChEM, 457 Zhongshan Rd, Dalian 116023, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Xu, Yuxing,Chen, Ruotian,Li, Zhen,et al. Influence of the Electrostatic Interaction between a Molecular Catalyst and Semiconductor on Photocatalytic Hydrogen Evolution Activity in Cobaloxime/CdS Hybrid Systems[J]. ACS APPLIED MATERIALS & INTERFACES,2017,9(27):23230-23237.
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