Synthesis and bactericidal ability of Ag/TiO2 composite films deposited on titanium plate |
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Authors: | Lixiang Mai Yongjian Xie Zhiguang Zhang |
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Institution: | a Hospital of Stomatology, Guanghua College of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, 56 Lingyuan West Road, Guangzhou 510055, PR China b Guangdong Provincial Stamotological Hospital, Guangzhou 510280, PR China c Guangzhou Institute of Energy Conversion, Chinese Academy of Science, Guangzhou 510640, PR China |
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Abstract: | In this study, we develop a bactericidal coating material for micro-implant, TiO2 films with Ag deposited on were prepared on titanium plates by sol-gel process. Their anti-microbial properties were analyzed as a function of the annealed temperature using Escherichia coli as a benchmark microorganism. Ag nanoparticles deposited on TiO2 film were of metallic nature and could grow to larger ones when the annealed temperature increased. The results indicated that the smaller size of Ag nanoparticles, the better bactericidal ability. On the other hand, the positive antibacterial effect of TiO2 enhanced the bactericidal effect of Ag. |
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Keywords: | Thin films Sol-gel preparation Titanium dioxide Bactericidal ability Ag nanoparticles |
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