| 纳米TiO2:C薄膜涂层的构建及对大肠杆菌的抗菌性能研究 |
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| 引用本文： | 麦理想,张晟,王春阳,谢永建,王大为,张志光.纳米TiO2:C薄膜涂层的构建及对大肠杆菌的抗菌性能研究[J].中山大学学报(自然科学版),2011,50(6). |
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| 作者姓名： | 麦理想 张晟 王春阳 谢永建 王大为 张志光 |
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| 作者单位： | 中山大学光华口腔医学院//附属口腔医院//口腔研究所;广东省口腔医院正畸科; |
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| 基金项目： | 国家自然科学基金资助项目(10972242) |
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| 摘 要： | 利用溶胶-凝胶法在纯钛片表面沉积纳米TiO2:C薄膜涂层，采用X射线光电子能谱分析纳米TiO2:C薄膜的化学成分。根据qbt2591-2003国家工业标准测试纳米TiO2:C薄膜对大肠杆菌的抗菌性能，同时通过透射电子显微镜观察细菌被杀灭的超微结构变化过程，分析其抗菌机理。结果表明，在TiO2:C薄膜中C进入锐钛矿型TiO2晶格内并取代Ti或O的位置从而形成O-Ti-C键合，进而抑制TiO2相变。试样对大肠杆菌20 min可见光催化抗菌率均达到90%以上，具有良好的抗菌效果。其杀灭细菌的超微结构变化表明其主要作用于细菌的细胞壁，引起胞壁穿孔，细胞胀大，细胞内容物外溢，直至细菌完全解体。
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| 关 键 词： | 溶胶-凝胶法 钛表面 二氧化钛 抗菌效果 |
| 收稿时间： | 2011-02-21; |
Synthesis and Antibacterial Effect Against Escherichia coliof TiO_2:C Composite Film Deposited on Titanium |
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| MAI Lixiang,ZHANG Sheng,WANG Chunyang,XIE Yongjian,WANG Dawei,ZHANG Zhiguang.Synthesis and Antibacterial Effect Against Escherichia coliof TiO_2:C Composite Film Deposited on Titanium[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2011,50(6). |
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| Authors: | MAI Lixiang ZHANG Sheng WANG Chunyang XIE Yongjian WANG Dawei ZHANG Zhiguang |
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| Institution: | MAI Lixiang1,ZHANG Sheng2,WANG Chunyang1,XIE Yongjian1,WANG Dawei1,ZHANG Zhiguang(1.Guanghua College of Stomatology//Hospital of Stomatology//Institute of Stomatology,SUN Yat-sen University,Guangzhou 510055,China,2.Department of Orthodontics,Guangdong Provincial Stamotological Hospital,Guangzhou 510280,China) |
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| Abstract: | Undoped and C-doped TiO2 films have been prepared by sol-gel process.The chemical components of the TiO2:C composite thin film were characterized using X-ray Photoelectron Spectroscopy(XPS).The antibacterial efficacy of the TiO2:C composite film was tested by film applicator coating method.Antibacterial mechanism of TiO2:C composite film was discussed by transmission electron microscope(TEM).It has been observed that C dopants retard the transformation from anatase to rutile phase.Namely,C doping effect is ... |
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| Keywords: | sol-gel process pure titanium surface titanium dioxide antibacterial effect |
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