| 羧甲基壳聚糖/Ce^3＋掺杂TiO2复合抗菌材料的研究 |
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| 引用本文： | 闫加磊,孙妍,石亮,周宜君,陈慧英. 羧甲基壳聚糖/Ce^3＋掺杂TiO2复合抗菌材料的研究[J]. 功能材料, 2011, 42(11) |
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| 作者姓名： | 闫加磊 孙妍 石亮 周宜君 陈慧英 |
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| 作者单位： | 中央民族大学生命与环境科学学院,北京,100081 |
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| 基金项目： | 国家大学生创新性实验计划资助项目(NMOE200911010); 国家民委科研资助项目(07ZY13) |
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| 摘 要： | 采用溶胶-凝胶法制备稀土（Ce^3＋）掺杂纳米TiO2（纳米Ce/TiO2）,借助XRD、BET、SEM对Ce/TiO2进行表征。结果表明纳米Ce/TiO2晶型为锐钛矿,平均晶粒大小为19.95nm,比表面积为43.302m^2/g。采用超声波催化法合成了羧甲基壳聚糖（CMC）,并与Ce/TiO2复配制得羧甲基壳聚糖/Ce3＋掺杂纳米TiO2复合材料（CMC/Ce/TiO2）,借助FT-IR对CMC及CMC/Ce/TiO2复合材料进行了结构表征。初步研究了纳米Ce/TiO2、普通纳米TiO2、CMC/Ce/TiO2、CMC的抗菌性能,结果显示纳米Ce/TiO2对大肠杆菌和金黄色葡萄球菌的抗菌率分别为55%和53%,普通纳米TiO2对两种菌的抗菌率分别为50%和45%,Ce^3＋的掺杂可提高纳米TiO2的抗菌性能;CMC/Ce/TiO2对大肠杆菌和金黄色葡萄球菌的抗菌率分别达到99%和95%,CMC对两种菌的抗菌率分别为90%和80%,Ce/TiO2的复合可显著提高CMC的抗菌性能。
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| 关 键 词： | 羧甲基壳聚糖 纳米TiO2 稀土铈 复合材料 抗菌性 |
Study on antibacterial composite of carboxymethyl chitosan/TiO_2 doped with Ce~(3+) |
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| YAN Jia-lei,SUN Yan,SHI Liang,ZHOU Yi-jun,CHEN Hui-ying. Study on antibacterial composite of carboxymethyl chitosan/TiO_2 doped with Ce~(3+)[J]. Journal of Functional Materials, 2011, 42(11) |
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| Authors: | YAN Jia-lei SUN Yan SHI Liang ZHOU Yi-jun CHEN Hui-ying |
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| Affiliation: | YAN Jia-lei,SUN Yan,SHI Liang,ZHOU Yi-jun,CHEN Hui-ying(College of Life and Environmental Science,Minzu University of China,Beijing 100081,China) |
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| Abstract: | In this paper,nano-TiO2 powder doped with rare earth Ce3+(nano-Ce/TiO2) was prepared by sol-gel method and characterized by XRD,BET and SEM.The results show that the nano-Ce/TiO2 is anatase with the average particle size 19.95nm,specific surface area 43.302m2/g.Carboxymethyl chitosan(CMC) was synthesized in ultrasonic as catalyst and was composited with the nano-Ce/TiO2 to prepare a kind of antibacterial composite film(CMC/Ce/TiO2).FT-IR is successfully used to characterize the CMC/Ce/TiO2 composite.Antibac... |
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| Keywords: | carboxymethyl chitosan nano-TiO2 rare-earth cerium composite materials antibacterial activity |
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