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

A. M. Venezia, F. L. Liotta, G. Pantaleo, A. Beck, A. Horváth, O. Geszti, A. Kocsonya, L. Guczi

Research output: Contribution to journalArticle

51 Citations (Scopus)

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 Ti{single bond}O{single bond}Si bonds.

Original languageEnglish
Pages (from-to)114-121
Number of pages8
JournalApplied Catalysis A: General
Volume310
Issue number1-2
DOIs
Publication statusPublished - Aug 17 2006

Fingerprint

Carbon Monoxide
Silicon Dioxide
Gold
Silica
Oxidation
Polymethyl Methacrylate
Sols
Oxides
Surface properties
Structural properties
X ray photoelectron spectroscopy
Nanoparticles
Transmission electron microscopy
X ray diffraction
single bond

Keywords

  • CO oxidation
  • Gold nanoparticles
  • TiO/SiO supports

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Effect of Ti(IV) loading on CO oxidation activity of gold on TiO2 doped amorphous silica. / Venezia, A. M.; Liotta, F. L.; Pantaleo, G.; Beck, A.; Horváth, A.; Geszti, O.; Kocsonya, A.; Guczi, L.

In: Applied Catalysis A: General, Vol. 310, No. 1-2, 17.08.2006, p. 114-121.

Research output: Contribution to journalArticle

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AU - Liotta, F. L.

AU - Pantaleo, G.

AU - Beck, A.

AU - Horváth, A.

AU - Geszti, O.

AU - Kocsonya, A.

AU - Guczi, L.

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