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Influence of the Electrostatic Interaction between a Molecular Catalyst and Semiconductor on Photocatalytic Hydrogen Evolution Activity in Cobaloxime/CdS Hybrid Systems
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
KeywordElectrostatic Interaction Cobaloxime Cadmium Sulfide (Cds) Photocatalytic Hydrogen Evolution Charge Transfer
Source PublicationACS APPLIED MATERIALS & INTERFACES
2017-07-12
DOI10.1021/acsami.7b06154
Volume9Issue:27Pages:23230-23237
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS KeywordAQUEOUS-SOLUTIONS ; NICKEL-CATALYST ; COBALT CATALYST ; CADMIUM-SULFIDE ; SURFACE-CHARGE ; H-2 PRODUCTION ; CO2 REDUCTION ; QUANTUM DOTS ; PK(A) VALUES ; CDSE QUANTUM
AbstractThe 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.
Language英语
WOS IDWOS:000405764700120
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/150213
Collection中国科学院大连化学物理研究所
Affiliation1.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
GB/T 7714
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.
APA Xu, Yuxing,Chen, Ruotian,Li, Zhen,Li, Ailong,Han, Hongxian,&Li, Can.(2017).Influence of the Electrostatic Interaction between a Molecular Catalyst and Semiconductor on Photocatalytic Hydrogen Evolution Activity in Cobaloxime/CdS Hybrid Systems.ACS APPLIED MATERIALS & INTERFACES,9(27),23230-23237.
MLA Xu, Yuxing,et al."Influence of the Electrostatic Interaction between a Molecular Catalyst and Semiconductor on Photocatalytic Hydrogen Evolution Activity in Cobaloxime/CdS Hybrid Systems".ACS APPLIED MATERIALS & INTERFACES 9.27(2017):23230-23237.
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