Coating of TiO2 Thin Films on the Surface of SiO2 Microspheres: Toward Industrial Photocatalysis

Li, Gang, Bai, Renbi and Zhao, X. S. (2008) Coating of TiO2 Thin Films on the Surface of SiO2 Microspheres: Toward Industrial Photocatalysis. Industrial and Engineering Chemistry Research, 47 21: 8228-8232. doi:10.1021/ie800561y


Author Li, Gang
Bai, Renbi
Zhao, X. S.
Title Coating of TiO2 Thin Films on the Surface of SiO2 Microspheres: Toward Industrial Photocatalysis
Formatted title
Coating of TiO2 Thin Films on the Surface of SiO2 Microspheres: Toward Industrial Photocatalysis
Journal name Industrial and Engineering Chemistry Research   Check publisher's open access policy
ISSN 0888-5885
1520-5045
Publication date 2008-11-05
Year available 2009
Sub-type Article (original research)
DOI 10.1021/ie800561y
Open Access Status DOI
Volume 47
Issue 21
Start page 8228
End page 8232
Total pages 5
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Formatted abstract
A core/shell SiO2/TiO2 photocatalyst was prepared using a liquid-phase deposition (LPD) method. Zeta-potential measurement showed that deposition of a layer of polyelectrolyte on the surface of SiO2 microspheres was a prerequisite for subsequent deposition of the TiO2 shell with a controllable and uniform thickness. The photocatalytic activity of the core/shell SiO2/TiO2 catalyst for decomposition of Orange II in liquid phase was observed to be comparable with that of P25 (a commercial TiO2 product of Degussa). Experimental data also showed that the SiO2/TiO2 core/shell nanostructured photocatalyst can be easily separated from the reaction medium by sedimentation, and the solid can be recycled and reused. Thus, the photocatalyst described in this work represents a new catalyst system with a high potential for practical applications in treating wastewater.
Keyword Engineering, Mechanical
Materials Science, Multidisciplinary
Materials Science, Coatings & Films
Physics, Applied
Engineering
Materials Science
Physics
ENGINEERING, MECHANICAL
MATERIALS SCIENCE, COATINGS & FILMS
MATERIALS SCIENCE, MULTIDISCIPLINARY
PHYSICS, APPLIED
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID RP279000235112
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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