采用溶胶-凝胶法制备了Ag＋、Zn2＋共掺杂的TiO2纳米薄膜，研究了温度对Ag—Zn-TiO2体系稳定性的影响；采用XPS、SEM、XRD和抗菌性测试等方法研究了热处理温度对薄膜表面化学组成、微观结构、晶粒尺寸及抗菌性能的影响。结果表明：掺杂薄膜均匀致密，表面存在的白色点状团簇物为Ag2O，粒径约10nm而Zn2＋取代Ti4＋进入Ti02晶格中；掺杂离子能阻抑TiO2晶粒的生长；掺杂薄膜在紫外线照射下抗菌率为100％，无光照时为99．59／6，均显著优于未掺杂薄膜的；随热处理温度的升高，薄膜的抗菌活性先增加后降低，最佳热处理温度为500℃。
Sol-gel method was used to prepare the Ag＋, Zn2＋ co-doped TiO2 thin film. Influence of temperature on stability of the Ag-Zn-TiO2 system was studied. XPS, SEM, XRD and antibacterial tests were used to investigated the effect of heat treatment temperature on the chemical composition, microstructure, grain size and antibacterial property of the obtained film. The results show that the doped film was uniform and dense. The white point existed on film surface was Ag20 and the size was about 10 nm, while the Zn2＋ took place the Ti4＋ into TiO2 lattice. Doped ions could inhibite grain growth of TiO2. The doped film exhibited antibacterial rate of 100% when UV light existed, the value was 99.5% when no light, both of the data were significantly better than that of the non-doped film. With increasing the heat treatment temperature, the antibacterial activity of film increased first and then decreased, the best heat treatment temperature was 500℃.
参考文献
| [1] | Shahab Ansari Amin;Mohammad Pazouki;Azarmidokht Hosseinnia .Synthesis of TiO2-Ag nanocomposite with sol-gel method and investigation of its antibacterial activity against E. coli[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,2009(3):241-245. |
| [2] | H.J. Zhang;D.Z. Wen .Antibacterial properties of Sb–TiO2 thin films by RF magnetron co-sputtering[J].Surface & Coatings Technology,2007(9/11):5720-5723. |
| [3] | Kayano Sunada;Yoshihilo Kikuchi;Kazuhito Hashimoto;Akira Fujishima .Bactericidal and detoxification effects of TiO2 thin film photocatalysts[J].Environmental Science & Technology: ES&T,1998(5):726-728. |
| [4] | Brook LA;Evans P;Foster HA;Pemble ME;Steele A;Sheel DW;Yates HM .Highly bioactive silver and silver/titania composite films grown by chemical vapour deposition[J].Journal of Photochemistry and Photobiology, A. Chemistry,2007(1):53-63. |
| [5] | 徐松梅 .双元素掺杂TiO2粉体及薄膜的光催化及抗菌性能研究[D].湖南大学,2009. |
| [6] | 孙柏,赵朝阳,徐彭寿,张国斌,韦世强.Mn掺杂对ZnO薄膜结构和光学性质的影响[J].无机材料学报,2007(05):911-916. |
| [7] | 沈星灿,郭为民,梁宏,张来军,胡瑞祥,王卓渊.微波载银对纳米二氧化钛相变及光催化性能的增效作用[J].化学学报,2008(01):49-55. |
| [8] | 赵高凌,韩高荣.银钠米粒子/二氧化钛复合薄膜的溶胶凝胶法 制备及其光学性质的研究[J].材料科学与工程,2001(01):21-25. |
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