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Origin of low photocatalytic activity of rutile TiO2

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Abstract

Rutile TiO2 nanoparticles were synthesized using the colloidal sol-gel process and their photocatalytic properties were characterized in comparison with anatase TiO2 nanoparticles. The synthesized rutile nanoparticles were found to possess higher surfaces area than the anatase nanoparticles and to exhibit lower photocatalytic activities, demonstrating that rutile TiO2 has intrinsically low photocatalytic properties. The photoluminescence (PL) study suggested that the inferior photocatalytic activity of rutile nanoparticles is correlated with the intrinsic recombination of photogenerated electron-hole pairs.

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Authors and Affiliations

  1. School of Advanced Materials Engineering, Kookmin University, Jeongneung-dong, Seongbuk-gu, 136-702, Seoul, Korea

    Hyun Suk Jung

  2. School of Electronic & Electrical Engineering, Hongik University, 72-1 Sangsu-dong, Mapo-gu, 121-791, Seoul, Korea

    Hyungtak Kim

Authors
  1. Hyun Suk Jung
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  2. Hyungtak Kim
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Correspondence to Hyungtak Kim.

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Jung, H.S., Kim, H. Origin of low photocatalytic activity of rutile TiO2 . Electron. Mater. Lett. 5, 73–76 (2009). https://doi.org/10.3365/eml.2009.06.073

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  • DOI: https://doi.org/10.3365/eml.2009.06.073

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