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The hydrobaric effect on cathodically deposited titanium dioxide photocatalyst

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Abstract

The hydrobaric effect on photoactivity of titanium dioxide (TiO2) fabricated by cathodic deposition in an aqueous solution was evaluated in this study. When the applied pressure was increased to 35 MPa, the water-splitting performance was improved by almost fourfold of the performance of the TiO2 prepared at atmospheric pressure. The surface states effect was significant in the deposited TiO2, which was exploited to affect the charges recombination of TiO2, and thereby enhance the resultant photoelectrochemical water-splitting performance. The hydrobaric cathodic deposition could be extended to fabrication of other metal oxides to eliminate the negative influence from the high-temperature process.

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Acknowledgments

This work was supported by CREST Project operated by the Japan Science and Technology Agency (JST). Y.-J. H. acknowledges the financial support from the Ministry of Science and Technology of Taiwan under grant NSC-102-2113-M-009-005-MY2.

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Authors and Affiliations

  1. Institute of Innovative Research, Tokyo Institute of Technology, 4259-R2-35 Nagatsuta-cho Midori-ku, Yokohama, 226-8503, Japan

    Tso-Fu Mark Chang, Wei-Hao Lin, Chun-Yi Chen & Masato Sone

  2. CREST, Japan Science and Technology Agency, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8503, Japan

    Tso-Fu Mark Chang, Chun-Yi Chen & Masato Sone

  3. Department of Materials Science and Engineering, National Chiao Tung University, 1001 University Road, Hsinchu, 30010, Taiwan

    Wei-Hao Lin & Yung-Jung Hsu

Authors
  1. Tso-Fu Mark Chang
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  2. Wei-Hao Lin
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  3. Chun-Yi Chen
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  4. Yung-Jung Hsu
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  5. Masato Sone
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Corresponding authors

Correspondence to Tso-Fu Mark Chang or Yung-Jung Hsu.

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The supplementary material for this article can be found at https://doi.org/10.1557/mrc.2017.21

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Chang, TF.M., Lin, WH., Chen, CY. et al. The hydrobaric effect on cathodically deposited titanium dioxide photocatalyst. MRS Communications 7, 189–192 (2017). https://doi.org/10.1557/mrc.2017.21

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  • DOI: https://doi.org/10.1557/mrc.2017.21

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