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Effect of Ti(IV) loading on CO oxidation activity of gold on TiO2 doped amorphous silica

Paper ID Volume ID Publish Year Pages File Format Full-Text
44030 46000 2006 8 PDF Available
Title
Effect of Ti(IV) loading on CO oxidation activity of gold on TiO2 doped amorphous silica
Abstract

Amorphous SiO2, doped with various amount of TiO2, was used as support for gold nanoparticles. Gold was deposited through the controlled sol formation technique. The effect of the TiO2 loading on the structural and surface properties was investigated by transmission electron microscopy, X-ray diffraction, Raman and X-ray photoelectron spectroscopy. The catalytic behavior was tested in the oxidation of CO. A significant enhancement in the activity was observed for the gold supported on mixed oxide with low TiO2 loading. On the basis of characterization data, the positive effect is assigned to the electronic modification of the Ti(IV) of the newly formed TiOSi bonds.

Keywords
Gold nanoparticles; TiO2/SiO2 supports; CO oxidation
First Page Preview
Effect of Ti(IV) loading on CO oxidation activity of gold on TiO2 doped amorphous silica
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 310, 17 August 2006, Pages 114–121
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis