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TiO2/WO3 Layered Film with Dual‐Function of Anti‐UV Light and High Photoelectrocatalytic Activity: Facile Preparation and Characterization

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Using magnetron sputtering, followed by post calcination TiO2, WO3, and TiO2/WO3 layered films were prepared using magnetron sputtering and followed by post calcination. The film structures and morphologies were checked using XRD, Raman spectroscopy, FESEM, XPS, and UV‐Vis spectroscopy. The TiO2 and WO3 films are of anatase and orthorhombic structures. The WO3 underlayer of the TiO2/WO3 film grows in [002] direction, almost perpendicular to substrates. Compared with the TiO2 film, the TiO2/WO3‐layered film effectively absorbs near‐UV light. The photocurrent of layered TiO2/WO3 film is much higher than that of TiO2 film under UV light illumination. The photoelectrocatalytic activity of the films was evaluated in two‐electrode photocatalytic reactor, which is assisted by bias voltage. It is seen that PEC activity of TiO2/WO3 film is almost four times higher than pure TiO2 film. Summarily, the TiO2/WO3‐layered film with dual‐function of anti‐UV light and high PEC activity was prepared using facile magnetron sputtering.
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Document Type: Research Article

Publication date: October 1, 2012

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