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Characterization and photoactivity of Pt/N-doped TiO2 synthesized through a sol–gel process at room temperature

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Abstract

The rates of photocatalytic production of H2 by Pt/N-doped TiO2 are significantly affected by the hydrolysis temperature applied during the sol–gel process. Production rates increase as the hydrolysis temperature decreases from 40 to 20 °C. The effects of the hydrolysis temperature on the properties and water-splitting behavior of photocatalysts were investigated. Characterization results showed that hydrolysis temperatures higher than 40 °C induce the formation of the rutile phase and particle agglomeration, reduce the N-dopant content, and decrease the range of visible-light absorption. In this study, a low hydrolysis temperature of about 20 °C is optimal for the sol–gel preparation of N-doped TiO2; this temperature favors the formation of high-purity anatase, small particle size, extensive visible-light absorption, and excellent rates of photocatalytic production of H2 (about 2100 μmol h−1 g−1).

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Acknowledgments

The authors would like to thank the National Science Council (NSC), Taiwan, ROC for providing financial support under Grant No. NSC 101-2221-E-005-043-MY3.

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Authors and Affiliations

  1. Green Energy Development Center, Feng Chia University, Taichung, 407, Taiwan, ROC

    Bing-Shun Huang

  2. School of Occupational Safety and Health, Chung Shan Medical University, Taichung, 402, Taiwan, ROC

    Hui-Hsin Tseng

  3. Department of Occupational Medicine, Chung Shan Medical University Hospital, Taichung, 402, Taiwan, ROC

    Hui-Hsin Tseng

  4. Department of Environmental Engineering, National Chung Hsing University, Taichung, 402, Taiwan, ROC

    En-Chin Su, I-Ching Chiu & Ming-Yen Wey

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  1. Bing-Shun Huang
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  2. Hui-Hsin Tseng
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  5. Ming-Yen Wey
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Correspondence to Ming-Yen Wey.

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Huang, BS., Tseng, HH., Su, EC. et al. Characterization and photoactivity of Pt/N-doped TiO2 synthesized through a sol–gel process at room temperature. J Nanopart Res 17, 282 (2015). https://doi.org/10.1007/s11051-015-3091-5

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