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Effect of Ni Substitution on the Structure and Photocatalytic Activity of InTaO4 Under Visible Light Irradiation

Published online by Cambridge University Press:  31 January 2011

Zhigang Zou ,
Jinhua Ye  and
Hironori Arakawa
Zhigang Zou*
Affiliation:
Photoreaction Control Research Center (PCRC), National Institute of Advanced Industrial Science and Technology (AIST), 1–1 Higashi, Tsukuba, Ibaraki 305–8565, Japan
Jinhua Ye
Affiliation:
Materials Engineering Laboratory (MEL), National Institute for Materials Science (NIMS), 1–2-1 Sengen, Tsukuba, Ibaraki 305–0047, Japan
Hironori Arakawa*
Affiliation:
Photoreaction Control Research Center (PCRC), National Institute of Advanced Industrial Science and Technology (AIST), 1–1 Higashi, Tsukuba, Ibaraki 305–8565, Japan
*
a)Address all correspondence to this author. e-mail: z.zou@aist.go.jp or H.arakawa@aist.go.jp
a)Address all correspondence to this author. e-mail: z.zou@aist.go.jp or H.arakawa@aist.go.jp
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Abstract

The effect of Ni substitution on the structure and photocatalytic H2 and O2 evolutions of InTaO4 under visible light irradiation (λ > 420 nm) from aqueous CH3OH/H2O and AgNO3/H2O solutions were investigated. The photocatalysts were prepared by the solid-state reaction method and characterized by powder x-ray diffraction and Rietveld structure refinement. These photocatalysts crystallize in the same wolframite structure, but lattice parameters decrease with increase of x in In1−xNixTaO4 (0 ≤x ≤ 0.2). The photocatalytic activity changed with the variation of x in In1−xNixTaO4and the photocatalyst at x = 0.1 showed the highest activity, which increased 8 times compared with nonsubstituted photocatalyst.

Type
Articles
Information
Journal of Materials Research , Volume 17 , Issue 6 , June 2002 , pp. 1419 - 1424
Copyright
Copyright © Materials Research Society 2002

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