ICCAS OpenIR
Photoinduced electron transfer and interfacial photocatalysis behaviour of ZnS/CdS binary co-colloid system
Chen, DW; Liu, YQ; Tian, Q; Xu, GZ
1999-02-01
Source PublicationSCIENCE IN CHINA SERIES B-CHEMISTRY
ISSN1006-9291
Volume42Issue:1Pages:96-105
AbstractThe interfacial photoinduced electron transfer and related secondary photochemical behaviour in the system of ZnS/CdS co-colloid superfine particles were studied by means of ESR and fluorescence spectroscopy techniques. The photoinduced charge-separation and the radical intermediates produced in the secondary redox reactions initiated via charge separation, as well as the mechanism of reaction processes, were investigated in detail through simultaneous excitation of two colloid components or only one of them. Research results indicated that, as E-g(Zns) > E-lambda > E-g(Cds), only CdS in co-colloid system might be excited. The transfer process of electron from the conduction band of CdS to the conduction band of ZnS is forbidden, and under the excitation wavelength range used, the electron transfer of co-colloid system was impossible, thus the photo redox reactions of the substrate in co-colloid system had no obvious difference from those reactions happening in single colloid system. While the excitation wavelength met the condition El E-g(ZnS) > E-g(CdS), both components of ZnS/CdS co-colloid system might be simultaneously excited, so the electron of ZnS conduction hand could transfer to the conduction band of CdS, leading to an effective separation of charge, thereby the extent and approach for the photoredox reactions of various substrates in co-colloid system showed an extinct difference from that of single colloid system. Some reactions might be weakened or restrained entirely, and some reactions might he strengthened clearly; therefore, these characteristics plays an important role in controlling the direction and mechanism of interfacial reactions.
KeywordPhotoinduced Electron Transfer Co-colloid Cadmium Sulfide Zinc Sulfide Esr
Indexed BySCI
Language英语
WOS IDWOS:000078667800014
PublisherSCIENCE PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/75442
Collection中国科学院化学研究所
Corresponding AuthorChen, DW
AffiliationChinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Chen, DW,Liu, YQ,Tian, Q,et al. Photoinduced electron transfer and interfacial photocatalysis behaviour of ZnS/CdS binary co-colloid system[J]. SCIENCE IN CHINA SERIES B-CHEMISTRY,1999,42(1):96-105.
APA Chen, DW,Liu, YQ,Tian, Q,&Xu, GZ.(1999).Photoinduced electron transfer and interfacial photocatalysis behaviour of ZnS/CdS binary co-colloid system.SCIENCE IN CHINA SERIES B-CHEMISTRY,42(1),96-105.
MLA Chen, DW,et al."Photoinduced electron transfer and interfacial photocatalysis behaviour of ZnS/CdS binary co-colloid system".SCIENCE IN CHINA SERIES B-CHEMISTRY 42.1(1999):96-105.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chen, DW]'s Articles
[Liu, YQ]'s Articles
[Tian, Q]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen, DW]'s Articles
[Liu, YQ]'s Articles
[Tian, Q]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen, DW]'s Articles
[Liu, YQ]'s Articles
[Tian, Q]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.