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Development of a visible-light-responsive rutile rod by site-selective modification of iron(III) ion on {1 1 1} exposed crystal faces

Paper ID Volume ID Publish Year Pages File Format Full-Text
47285 46466 2010 5 PDF Available
Title
Development of a visible-light-responsive rutile rod by site-selective modification of iron(III) ion on {1 1 1} exposed crystal faces
Abstract

{1 1 1} exposed crystal faces of shape-controlled rutile titanium(IV) oxide (TiO2) were site-selectively modified with trivalent iron(III) (Fe3+) ions by utilizing adsorption property of iron(III)/iron(II) (Fe3+/Fe2+) ions. The rutile TiO2 with site-selective modification of Fe3+ ions showed high photocatalytic activity under visible-light irradiation as a result of separation of redox sites, i.e., oxidation and reduction proceed over Fe3+ ions on {1 1 1} faces and the bare TiO2 surface on {1 1 0} faces, respectively. Double-beam photoacoustic spectroscopic analyses suggest that the high activity of TiO2 with site-selective modification of Fe3+ ions is attributed to not efficient electron injection from Fe3+ ions but efficient reduction by injected electrons on {1 1 0} faces.

Keywords
Visible-light-responsive photocatalyst; Shape-controlled rutile titanium(IV) oxide; Site-selective modification of metal ion
First Page Preview
Development of a visible-light-responsive rutile rod by site-selective modification of iron(III) ion on {1 1 1} exposed crystal faces
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 97, Issues 1–2, 9 June 2010, Pages 115–119
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis