6533b7d5fe1ef96bd126503b
RESEARCH PRODUCT
Effect of Ti(IV) loading on CO oxidation activity of gold on TiO2 doped amorphous silica
A. KocsonyaAndrea BeckGiuseppe PantaleoAnna Maria VeneziaLászló GucziO. GesztiF.l. LiottaAnita Horváthsubject
ChemistryProcess Chemistry and TechnologyInorganic chemistrytechnology industry and agricultureNanoparticleCatalysisAmorphous solidsymbols.namesakeTransition metalX-ray photoelectron spectroscopyTransmission electron microscopyColloidal goldsymbolsMixed oxideRaman spectroscopydescription
Abstract Amorphous SiO 2 , doped with various amount of TiO 2 , was used as support for gold nanoparticles. Gold was deposited through the controlled sol formation technique. The effect of the TiO 2 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 TiO 2 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 O Si bonds.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-08-17 | Applied Catalysis A: General |