EPR CHARACTERIZATION OF CR3-ANATASE AS MATRIX( AND CR5+ IONS IN TIO2)

Authors
ABOUKAIS A DOURDIN M AISSI FC GUELTON M VEDRINE JC
Citation
A. Aboukais et al., EPR CHARACTERIZATION OF CR3-ANATASE AS MATRIX( AND CR5+ IONS IN TIO2), Journal de chimie physique et de physico-chimie biologique, 91(6), 1994, pp. 748-752
Citations number
13
Categorie Soggetti
Biology,"Chemistry Physical
Journal title
Journal de chimie physique et de physico-chimie biologique → ACNP
Volume
91
Issue
6
Year of publication
1994
Pages
748 - 752
Database
ISI
SICI code
Abstract
Similar to commercial anatase samples, a well-resolved EPR spectrum ha s been observed in anatase-TiO2 prepared by Rhone-Poulenc. Using the X and Q-band microwave frequencies, it has been demonstrated that the s pectrum is formed by two signals. One, constituted by a fine structure , has been attributed to Cr3+ ions and the other to Cr5+. It seems tha t these species are responsible for the spectrum when they are simulta neously present in anatase.