EXAFS Study and Photocatalytic Properties of Un-Doped and Iron-Doped ZrO2-TiO2 (Photo-) Catalysts Full article
Conference |
Catalytic Nano-Oxides Research and Development in Europe : Present and Future 16-19 May 2006 , Seville |
||||||
---|---|---|---|---|---|---|---|
Journal |
Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308 |
||||||
Output data | Year: 2007, Volume: 128, Number: 3-4, Pages: 245-250 Pages count : 6 DOI: 10.1016/j.cattod.2007.07.010 | ||||||
Tags | EXAFS, Heterogeneous photocatalysis, Iron-doped, Sol-gel, Surface, TiO2, ZrO2 | ||||||
Authors |
|
||||||
Affiliations |
|
Funding (3)
1 | North Atlantic Treaty Organization | EST.CLG 979855 |
2 | Russian Foundation for Basic Research | 00-03-32407 |
3 | Ministry of Education and Vocational Training | CTQ2004-05734-C02-02 |
Abstract:
The local zirconium and iron arrangements of the iron-doped ZrO2-TiO2 system, prepared by sol–gel impregnation method, were studied by EXAFS spectroscopy. Only a tetragonal ZrO2 structure is located on TiO2 surface. For the iron-doped ZrO2-TiO2 system, the presence of the Fe-O-Fe species as well as and Fe-O-Zr species located on the surface/pre-surface region are shown; it seems that iron is heterogeneously distributed, forming small iron oxide nanoclusters and Fex/ZrO2 (tetragonal) spots at the catalyst surface. The photocatalytic activity of the un-doped and iron-doped binary system ZrO2-TiO2 was investigated in two kind of photoreactions: the salicylic acid photooxidation and the photocatalytic reduction of Cr(VI). Different photocatalytic behaviour has been found for the un-doped and iron-doped ZrO2-TiO2 systems which have been explained in terms of the EXAFS study.
This study represents an example of attempt to prepare a new potential photoactive mixed oxide system, containing two ions (Ti4+ and Zr4+) with good photocatalytic activity if it is compared with commercial TiO2 (Degusssa P25) calcined at 600 °C.
Cite:
Hidalgo M.C.
, Colón G.
, Navío J.A.
, Macias M.
, Kriventsov V.V.
, Kochubey D.I.
, Tsodikov M.V.
EXAFS Study and Photocatalytic Properties of Un-Doped and Iron-Doped ZrO2-TiO2 (Photo-) Catalysts
Catalysis Today. 2007. V.128. N3-4. P.245-250. DOI: 10.1016/j.cattod.2007.07.010 WOS Scopus РИНЦ
EXAFS Study and Photocatalytic Properties of Un-Doped and Iron-Doped ZrO2-TiO2 (Photo-) Catalysts
Catalysis Today. 2007. V.128. N3-4. P.245-250. DOI: 10.1016/j.cattod.2007.07.010 WOS Scopus РИНЦ
Dates:
Published online: | Aug 21, 2007 |
Published print: | Oct 30, 2007 |
Identifiers:
Web of science | WOS:000250840600019 |
Scopus | 2-s2.0-35248849420 |
Elibrary | 13547691 |
Chemical Abstracts | 2007:1208781 |
Chemical Abstracts (print) | 148:65937 |
OpenAlex | W2057390408 |