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Preparation and enhanced photocatalytic oxidation activity of surface-modified CdS nanoparticles with high photostability

Published online by Cambridge University Press:  31 January 2011

M. Y. Han ,
W. Huang ,
C. H. Quek ,
L. M. Gan ,
C. H. Chew ,
G. Q. Xu  and
S. C. Ng
M. Y. Han
Affiliation:
Department of Chemistry and Institute of Materials Research and Engineering, National University of Singapore, Singapore 119260
W. Huang
Affiliation:
Department of Chemistry and Institute of Materials Research and Engineering, National University of Singapore, Singapore 119260
C. H. Quek
Affiliation:
Department of Chemistry and Institute of Materials Research and Engineering, National University of Singapore, Singapore 119260
L. M. Gan
Affiliation:
Department of Chemistry and Institute of Materials Research and Engineering, National University of Singapore, Singapore 119260
C. H. Chew
Affiliation:
Department of Chemistry and Institute of Materials Research and Engineering, National University of Singapore, Singapore 119260
G. Q. Xu
Affiliation:
Department of Chemistry and Institute of Materials Research and Engineering, National University of Singapore, Singapore 119260
S. C. Ng
Affiliation:
Department of Chemistry and Institute of Materials Research and Engineering, National University of Singapore, Singapore 119260
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Abstract

Highly photostable CdS nanoparticles modified with an alkyl group were prepared by an improved microemulsion technique using hexanethiol as cosurfactant. The surface-modified CdS nanoparticles catalyzed the photo-oxidation of 4-chlorophenol via continuously bubbling oxygen under uv light. The photocatalytic oxidation activity of the CdS nanoparticles was enhanced due to the formation of their compact CdS cores with strong chemical surface modification by heat treatment.

Type
Articles
Information
Journal of Materials Research , Volume 14 , Issue 5 , May 1999 , pp. 2092 - 2095
Copyright
Copyright © Materials Research Society 1999

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