The Physical and Antibacterial Properties of Argentine-Doped TiO2 Film on Stainless Steel Substrate


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The aim of the present study is to investigate the physical properties and antibacterial performances of Ag+-doped TiO2 film on stainless steel and effects of surface oxidization. In the experiment, the surface of stainless steel was been oxidized by heat treatment (550°C, 1 hour) before the Ag+-doped TiO2 (anatase) film being formed by sol-gel method. Sample A (filmed after surface oxidization), B (filmed without surface oxidization), C (only surface oxidization) and D (neither oxidized nor filmed) were respectively tested for corrosive resistance, abrasive resistance and adhesiveness, and the samples with different content of argentine was tested for antibacterial performance. Results: 1) Corrosion rates of sample A, B, C and D in 10% FeCl3 solution are respectively 1.65%, 1.87%, 2.02% and 3.28%, suggesting that the film has protected the stainless steel from the corrosion; 2) Scratching using a loaded (150 g) pin makes no crack on surface of sample A, while it results a slight scuffing on surface of sample B, suggesting that the surface oxidization has enhanced the abrasive resistance and adhesiveness of the TiO2 film, which may be due to the bridge-like function of the oxidation film; 3)Antibacterial performance is enhanced as the content of doping argentine increases, exceeding 90% when the argentine reached 3%, and the TiO2 film on the oxidized stainless steel performs better in antibacterial test than untreated one.



Key Engineering Materials (Volumes 280-283)

Edited by:

Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li




X. G. Ding and L. Li, "The Physical and Antibacterial Properties of Argentine-Doped TiO2 Film on Stainless Steel Substrate", Key Engineering Materials, Vols. 280-283, pp. 801-804, 2005

Online since:

February 2007





[1] M. Bosetti, A. Masse, E. Tobin and M. Cannas: Biomater. Vol. 23 (2002), p.887.

[2] A. Gristina: Science Vol. 237 (1987), p.1588.

[3] M. Wassal, M. Santin, C. Isalberti, M. Cannas and S. Denyer: J. Biomed. Mater. Res. Vol. 36 (1997), p.325.

[4] H.X. Zhao, H. Goto, M. Matsumura, T. Takahashi and M. Yamamoto: Surf. Coat. Technol., Vol. 115 (1999), p.123.

[5] M. Kawashita, S. Tsuneyama, F. Miyaji, T. Kokubo, H. Kozuka, K. Yamamoto: Biomater. Vol. 21 (2000), p.393.

[6] X.H. Zhong, S.L. Xu and Y.Y. Lue: Inorganic Chemical Series, (Science Press, Beijing 1998).

[7] L. Zhang, Y.F. Zhu, Y. He, W. Li and H. B. Sun: Appl. Catal. B: Environ. Vol. 40 (2003), p.287.

[8] R. Villacres, S. Ikeda, T. Torimoto and B. Ohtani: J. Photochem. Photobio. Vol. A160 (2003), p.121.