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Photocatalytic activity enhancement of TiO2 porous thin film due to homogeneous surface modification of RuO2

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Abstract

Ruthenium dioxide (RuO2) was uniformly modified on TiO2 porous thin film by impregnation of Ru-contained dye on the film followed by sintering it at 450 °C to burn off organic matters and form ruthenium oxide, which is named as impregnation method. The homogenous modification of metal oxide inside porous thin film can be realized by the impregnation method, and the modification amount of RuO2 can be easily adjusted by the iteration numbers of impregnation and sintering. Appropriate amount of uniformly modified RuO2 was found to obviously enhance photocatalytic performance of TiO2 to degrade eosin Y. The photocatalysis enhancement was attributed to the shallow hole traps on the surface of nanoparticles formed by RuO2, and these traps can retard recombination of hole with electron.

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Acknowledgments

Jingbo Zhang thanks Prof. A. Zaban of Bar-Ilan University, Israel for his kind and valuable suggestions. We acknowledge the financial support from the National Nature Science Foundation of China (20873162), the State Key Laboratory of Pollution Control and Resource Reuse Foundation (Nos. PCRRF09006, PCRRF08009, and PCRRY09004), and the Innovative Foundation of the Center for Molecular Science, Chinese Academy of Sciences (CMS-CX200718).

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Authors and Affiliations

  1. State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, People’s Republic of China

    Weiying Li

  2. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100080, People’s Republic of China

    Jingbo Zhang & Yuan Lin

Authors
  1. Peng Liu
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  2. Weiying Li
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  4. Yuan Lin
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Correspondence to Weiying Li.

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Liu, P., Li, W., Zhang, J. et al. Photocatalytic activity enhancement of TiO2 porous thin film due to homogeneous surface modification of RuO2. Journal of Materials Research 26, 1532–1538 (2011). https://doi.org/10.1557/jmr.2011.124

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  • DOI: https://doi.org/10.1557/jmr.2011.124

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