Advanced Materials

Nitrogen-doped Lamellar Niobic Acid with Visible Light-responsive Photocatalytic Activity

Authors

  • Xiukai Li,

    1. International Center for Materials Nanoarchitectonics Photocatalytic Materials Center, National Institute for Materials Science (NIMS) 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan)
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  • Naoki Kikugawa,

    1. International Center for Materials Nanoarchitectonics Photocatalytic Materials Center, National Institute for Materials Science (NIMS) 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan)
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  • Jinhua Ye

    Corresponding author
    1. International Center for Materials Nanoarchitectonics Photocatalytic Materials Center, National Institute for Materials Science (NIMS) 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan)
    2. Department of Materials Science and Engineering Nanjing University Nanjing 210093 (PR China)
    • International Center for Materials Nanoarchitectonics Photocatalytic Materials Center, National Institute for Materials Science (NIMS) 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan).
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  • This work was in part supported by the World Premier International Research Center Initiative (WPI Initiative) on Materials Nanoarchitectonics, the Global Environment Research Fund, MEXT, Japan, and the National Natural Science Foundation of China (No. 50732004 and 20528302). Supporting Information is available online from Wiley InterScience or from the authors.

Abstract

By a facile solid-state reaction method with urea as a nitrogen source, HNb3O8 could be successfully doped with nitrogen without destroying its layered structure. It was found that the intercalation of urea not only helps to stabilize the layered structure of HNb3O8 during the heating process, but also facilitates an easier doping of nitrogen into the solid acid. The nitrogen-doped HNb3O8 photocatalyst so-obtained shows fairly good activity under visible light irradiation.

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