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Visible-light Active TiO2 Photocatalyst by Multilayered with WO3 Film

Abstract

Sputter-deposited TiO2 films with high visible-light photocatalytic activity were successfully realized by a hybrid TiO2/Pt/WO3 film structure with Pt nanoparticles uniformly distributed at the interface of the TiO2 and WO3 films. The TiO2/Pt/WO3 hybrid films enable the complete decomposition of CH3CHO under visible-light irradiation. The water contact angle of TiO2/Pt/WO3 hybrid films reaches below 5 degree under visible-light irradiation. Pt nanoparticles are considered to act as cocatalyst to improve the electron-hole separation efficiency. We demonstrate that the photogenerated holes in WO3 are transferred to the surface of the TiO2 film with less hole-trapping and induce high visible-light photocatalytic activity and hydrophilic behavior, and the photogenerated electrons are accumulated in the Pt nanoparticles. High hydrophilic thin films with high visible-light photocatalytic activity can be applied to various indoor products possessing self-cleaning and antifogging properties.

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Publication details

The article was received on 17 May 2017, accepted on 12 Jun 2017 and first published on 12 Jun 2017


Article type: Paper
DOI: 10.1039/C7CP03291A
Citation: Phys. Chem. Chem. Phys., 2017, Accepted Manuscript
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    Visible-light Active TiO2 Photocatalyst by Multilayered with WO3 Film

    J. Jia, K. Taniyma, M. Imura, T. Kanai and Y. Shigesato, Phys. Chem. Chem. Phys., 2017, Accepted Manuscript , DOI: 10.1039/C7CP03291A

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