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The Effect Of Crystal Form Ofn-Doped Titanium Dioxide On Visible-Light Photocatalytic Activity

Author

Listed:
  • JIWEI ZHANG

    (Key Laboratory of Ministry of Education for Special Functional Materials, Henan University, Kaifeng 475004, P. R. China)

  • JINGWEI ZHANG

    (Key Laboratory of Ministry of Education for Special Functional Materials, Henan University, Kaifeng 475004, P. R. China)

  • ZHENSHENG JIN

    (Key Laboratory of Ministry of Education for Special Functional Materials, Henan University, Kaifeng 475004, P. R. China)

  • ZHISHEN WU

    (Key Laboratory of Ministry of Education for Special Functional Materials, Henan University, Kaifeng 475004, P. R. China)

  • ZHIJUN ZHANG

    (Key Laboratory of Ministry of Education for Special Functional Materials, Henan University, Kaifeng 475004, P. R. China)

Abstract

TiO2samples with different crystal forms were treated in flowingNH3at elevated temperatures to fabricateN-dopedTiO2photocatalysts with different crystal forms. The resultingN-dopedTiO2photocatalysts were characterized by means of X-ray diffraction, transmission electron microscopy, diffusion reflectance spectrometry, and X-ray photoelectron spectroscopy. The visible-light photocatalytic activity of the catalysts was evaluated by measuring the photocatalyzed removal rate of propylene. Results indicate that the visible-light activity ofN-dopedTiO2photocatalysts is highly dependent on the crystal form. Namely,N-doped anataseTiO2has the highest visible-light activity, while the visible-light activity ofN-dopedTiO2photocatalysts decreases with decreasing content of anatase phase and increasing content of rutile phase. In additionN-doped rutileTiO2has no visible-light photocatalytic activity.

Suggested Citation

  • Jiwei Zhang & Jingwei Zhang & Zhensheng Jin & Zhishen Wu & Zhijun Zhang, 2009. "The Effect Of Crystal Form Ofn-Doped Titanium Dioxide On Visible-Light Photocatalytic Activity," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 16(04), pages 563-567.
    • Handle: RePEc:wsi:srlxxx:v:16:y:2009:i:04:n:s0218625x09013013
    DOI: 10.1142/S0218625X09013013
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