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Characterization of titanium–tin composite oxide films and their visible-light photocatalytic properties

Paper ID Volume ID Publish Year Pages File Format Full-Text
44563 46041 2006 4 PDF Available
Title
Characterization of titanium–tin composite oxide films and their visible-light photocatalytic properties
Abstract

Bilayer structures of Ti film on SnOx film prepared by magnetron sputtering were annealed in ambient oxygen. Depth profiles of compositional elements after oxidation of the Ti/SnOx structures analyzed by XPS reveal that TiOx/SnOx composite films and TiO2/SnOx bilayer films were formed when the Ti/SnOx bilayer structures were fabricated at RT and 300 °C, respectively. In the TiOx/SnOx composite films, the SnOx forms impurity levels in the TiOx bandgap at the same time as it prevents TiO2 crystallization. These impurity levels are considered to play a role of visible-light absorption. Visible-light response photocatalytic activities are observed only in the TiOx/SnOx composite films.

Keywords
Titanium oxide; Tin oxide; Photocatalyst; Magnetron sputtering
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Characterization of titanium–tin composite oxide films and their visible-light photocatalytic properties
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 302, Issue 2, 11 April 2006, Pages 305–308
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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