Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (05): 1122-1127.doi: 10.3866/PKU.WHXB20110433

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Anticorrosion Properties of Nano Anatase TiO2 Films Derived from Sol-Gel and Hydrothermal Crystallization

YUN Hong1,2, LIN Chang-Jian1, DU Rong-Gui1   

  1. 1. State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China;
    2. Key Laboratory of Shanghai Colleges and Universities for Electric Power Corrosion Control and Applied Electrochemistry, Department of Energy Source and Environment Engineering, Shanghai University of Electric Power, Shanghai 200090, P. R. China
  • Received:2010-12-07 Revised:2011-02-11 Published:2011-04-28
  • Contact: LIN Chang-Jian E-mail:cjlin@xmu.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (50571085, 20773100, 21003089) and National High Technology Research and Development Program of China (2009AA03Z327).

Abstract:

Nano TiO2 films were applied to the surface of stainless steel (SS) by sol-gel and hydrothermal crystallization using Ti(O(CH2)3CH3)4 as a precursor. The properties of the TiO2 films were determined by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), atomic force microscopy (AFM), and Auger electron spectroscopy (AES). The corrosion performance of the TiO2 films was evaluated by electrochemical impedance spectroscopy (EIS) and polarization measurements. Anatase TiO2 films prepared by hydrothermal crystallization at 170 °C showed similar crystallization to those prepared by conventional calcination at 450 °C. The TiO2 prepared by the two methods were, however, obviously different from the surface structure and the material prepared by hydrothermal crystallization showed better anticorrosion performance in 3.5% (w) NaCl solution compared with the material prepared by calcination.

Key words: Hydrothermal crystallization, Anatase TiO2, Corrosion and protection

MSC2000: 

  • O646