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Structure and activity of nanosized iron-doped anatase TiO2 catalysts for phenol photocatalytic degradation

Paper ID Volume ID Publish Year Pages File Format Full-Text
48950 46533 2007 7 PDF Available
Title
Structure and activity of nanosized iron-doped anatase TiO2 catalysts for phenol photocatalytic degradation
Abstract

A series of nanosized iron-doped anatase TiO2 catalysts with different iron content (between 0.4 and 5.1 wt.%) has been prepared by a microemulsion method and examined with respect to their behaviour for UV photocatalytic degradation of aqueous phenol. The activity results have been correlated with structural, electronic and surface examinations of the catalysts done with XRD, Raman, UV–vis, EPR, N2 physisorption and NH3 chemisorption. An enhancement of the photocatalytic activity is observed for doping levels up to ca. 1 wt.% which is attributable to the effective introduction of Fe3+ cations into the anatase structure along with associated modifications of the surface acid/base properties. Achievement of relatively high levels of surface segregation of oxidic iron-containing amorphous phases for higher doping levels results however detrimental to the photoactivity.

Keywords
Photocatalyst; Titanium dioxide; Anatase; Iron doping; Microemulsion method; XRD; Raman; EPR; UV–vis; NH3 chemisorption; Phenol degradation
First Page Preview
Structure and activity of nanosized iron-doped anatase TiO2 catalysts for phenol photocatalytic degradation
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 72, Issues 1–2, 8 March 2007, Pages 11–17
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis