CO oxidation over gold nanoparticles supported on TiO2 and TiO2-ZnO: Catalytic activity effects due to surface modification of TiO2 with ZnO

Kaushik Mallick; Mike S. Scurrell

doi:10.1016/S0926-860X(03)00552-0

CO oxidation over gold nanoparticles supported on TiO₂ and TiO₂-ZnO: Catalytic activity effects due to surface modification of TiO₂ with ZnO

Kaushik Mallick, Mike S. Scurrell

University of the Witwatersrand

Research output: Contribution to journal › Article › peer-review

71 Citations (Scopus)

Abstract

In situ reduction of gold ions, by a strong reducing agent facilitates the formation of gold nanoparticles on suitable metal oxide supports in such a way that a narrower size distribution and smaller particle size are obtained. Improved catalytic activity is also observed. Introducing zinc oxide to titanium oxide causes a surface modification of the titanium oxide and leads to a reduced catalytic activity for CO oxidation.

Original language	English
Pages (from-to)	527-536
Number of pages	10
Journal	Applied Catalysis A: General
Volume	253
Issue number	2
DOIs	https://doi.org/10.1016/S0926-860X(03)00552-0
Publication status	Published - 28 Oct 2003
Externally published	Yes

Keywords

CO-oxidation
Embedded gold nanoparticles
FT-IR
In situ reduction
Raman spectra
Surface defect
Surface modification
TEM

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

Access to Document

10.1016/S0926-860X(03)00552-0

Cite this

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abstract = "In situ reduction of gold ions, by a strong reducing agent facilitates the formation of gold nanoparticles on suitable metal oxide supports in such a way that a narrower size distribution and smaller particle size are obtained. Improved catalytic activity is also observed. Introducing zinc oxide to titanium oxide causes a surface modification of the titanium oxide and leads to a reduced catalytic activity for CO oxidation.",

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KW - Embedded gold nanoparticles

KW - FT-IR

KW - In situ reduction

KW - Raman spectra

KW - Surface defect

KW - Surface modification

KW - TEM

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