Enhanced photocatalytic activity of Au-buffered TiO2 thin films prepared by radio frequency magnetron sputtering |
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| Authors: | Jong Min Jung Mingsong Wang Eui Jung Kim Chinho Park Sung Hong Hahn |
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| Affiliation: | aDepartment of Physics, University of Ulsan, Ulsan 680-749, South Korea;bDepartment of Chemical Engineering, University of Ulsan, Ulsan 680-749, South Korea;cSchool of Chemical Engineering and Technology, Yeungnam University, Gyeongsan 712-749, South Korea |
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| Abstract: | Au-buffered TiO2 thin films have been prepared by radio frequency magnetron sputtering method. The structural and morphological properties of the thin films were characterized by X-ray diffraction, scanning electron microscopy, and atomic force microscopy. The photocatalytic activity of the samples was evaluated by the photodecomposition of methylene blue. The Au-buffer thin layer placed between the TiO2 thin films significantly enhanced photocatalytic activity by 50%. Annealing the Au-buffered TiO2 thin film at 600 °C decreased the film roughness, but it increased the surface area and anatase crystalline size, enhancing the photocatalytic activity. |
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| Keywords: | Sputtering method TiO2 thin films Au-buffer layer Photocatalytic activity |
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