Hydrophilicity and Photo-Catalytic Property of TiO₂ Thin Film Doped by Ni²⁺

Abstract:

The sol-gel method was made use of to prepare TiO₂ thin films and Ni²⁺ doped TiO₂ thin films. The static contact angle measurement was employed to estimate the wettability of prepared films, and the crystalline phase and surface morphology were characterized by XRD and AFM, respectively. The film’s photo-catalytic property was tested according to degradation of methyl orange solution. The results indicate that 1.0% molar ratio of Ni²⁺ and TiO₂ makes hydrophilicity and photo-induced hydrophilicity of the doped thin film increasing, however, at the same time its photo-catalytic property decreases slightly. It is suggested that the mechanism of photo-induced hydrophilicity of TiO₂ thin film is different from the one of photo-catalytic oxidation decomposition property.

• Periodical: Advanced Materials Research (Volumes 204-210)
• Pages: 818-822
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.204-210.818
• Online since: February 2011
• Authors: Song Hua Gao, Li Hua Gao, Ke Sheng Zhou
• Keywords: AFM, Hydrophilicity, Ni²⁺ Doped TiO₂ Thin Films, Photocatalysis, Sol-Gel (SG)

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