Electron paramagnetic resonance (EPR) investigation of TiO2-delaminated clays

In this paper a set of TiO2 and Fe/TiO2 delaminated clays, prepared by different synthesis procedures, was characterized by electron paramagnetic resonance (EPR) spectroscopy. EPR analyses revealed an important shift of the central g-value as consequence of Fe3+ insertion (substitution) in the TiO2 structure by a sensitive and direct method of iron incorporation. A series of additional g-values, symmetrically distributed around the central absorption line, was attributed to some electron trapping sites (defects) remained in the TiO2 framework. The spectroscopic characterizations carried out in this work contribute to understand the photo-catalytic properties previously observed for these solids.

Bibliographic Details

Main Authors:	Carriazo,J.G., Ensuncho-Muñoz,A., Almanza,O.
Format:	Digital revista
Language:	English
Published:	Universidad Autónoma Metropolitana, División de Ciencias Básicas e Ingeniería 2014
Online Access:	http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1665-27382014000200012
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