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Study of photocatalytic activity in sputter-deposited Cr-TiO2thin film

✍ Scribed by Biswas, S. ;Hossain, M. F. ;Takahashi, T. ;Kubota, Y. ;Fujishima, A.

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
507 KB
Volume
205
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

In this investigation, Cr‐doped TiO~2~ thin films were prepared on glass substrate with various doping concentrations to study the photocatalytic activity in UV–visible light irradiation. The Cr‐doped TiO~2~ thin films were prepared by reactive magnetron sputtering using various sputtering pressures to control the Cr doping concentration. The optical property shows large red‐shift of transmittance edge and decrease of average transmittance with the increase of Cr doping. The photocatalytic activity, evaluated by the measurement of decomposition of methanol under visible and UV–visible light irradiation, increases for the low Cr doping concentration, but decreases for higher Cr doping concentrations. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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