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Effect of Ni substitution on the structure and photocatalytic activity of InTaO4 under visible light irradiation

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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.

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Authors and Affiliations

  1. Materials Engineering Laboratory (MEL), National Institute for Materials Science (NIMS), 1–2-1 Sengen, Tsukuba, Ibaraki 305–0047, Japan

    Zhigang Zou & Jinhua Ye

  2. Photoreaction Control Research Center (PCRC), National Institute of Advanced Industrial Science and Technology (AIST), 1–1 Higashi, 305-8565, Tsukuba, Ibaraki, Japan

    Hironori Arakawa

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  1. Zhigang Zou
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  2. Jinhua Ye
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  3. Hironori Arakawa
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Correspondence to Zhigang Zou.

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Zou, Z., Ye, J. & Arakawa, H. Effect of Ni substitution on the structure and photocatalytic activity of InTaO4 under visible light irradiation. Journal of Materials Research 17, 1419–1424 (2002). https://doi.org/10.1557/JMR.2002.0211

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  • DOI: https://doi.org/10.1557/JMR.2002.0211

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