A facile method to prepare monodispersed CdS/SiO2 composite microspheres and investigation on their photocatalytic properties.

Abstract:

:This article presents a facile method to prepare CdS/SiO(2) composite microspheres and their good catalytic properties. In our method, monodispersed SiO(2) particles bearing amino groups (-NH(2)) were synthesized at first and then used as carriers to load nanosized CdS particles to form CdS/SiO(2) composite microspheres. With the addition of CdAc(2) solution to the SiO(2) dispersion, Cd(2+) was attracted to the surfaces of the SiO(2) particles through coordination interaction, and then thioacetamide was added to the dispersion. By heating, S(2-) released and reacted with the Cd(2+), CdS/SiO(2) composite microspheres were obtained accordingly. The photocatalytic properties of the as-prepared composite microspheres were investigated as well. It was found that the composite microspheres have excellent photocatalytic activities for the degradation of dyes comparing with the commercial P-25 TiO(2) catalysts. After using and recycling for three times, the photocatalytic performance still remained very well.

journal_name

Photochem Photobiol

authors

Peng C,Cheng X,Chen S,Li X,Li T,Zhang D,Huang Z,Zhang A

doi

10.1111/j.1751-1097.2012.01188.x

subject

Has Abstract

pub_date

2012-11-01 00:00:00

pages

1433-41

issue

6

eissn

0031-8655

issn

1751-1097

journal_volume

88

pub_type

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