| 敏化的TiO2纳米晶表面形貌、晶相、光谱及光催化灭菌研究 |
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| 引用本文： | 李敏,王振岭,石恒真,曾毅. 敏化的TiO2纳米晶表面形貌、晶相、光谱及光催化灭菌研究[J]. 无机材料学报, 2003, 18(6): 1261-1266 |
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| 作者姓名： | 李敏 王振岭 石恒真 曾毅 |
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| 作者单位： | [1]河南省周口师范学院化学系，周口466000 [2]中国科学院上海硅酸盐所，上海200050 |
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| 摘 要： | 采用sol-gel法，制备了不同形态和晶相的二氧化钛纳米粒子。以叶绿素作为敏化剂对不同形态的二氧化钛纳米晶进行敏化，敏化前后的二氧化钛纳米晶分别用XRD、AFM、紫外可见光谱和荧光光谱进行了表征和分析，表明敏化达到了非常好的光电转换效果。选用白菜的软腐病菌作为实验菌进行评价实验，结果表明敏化的二氧化钛纳米晶在可见光下50min杀菌率几乎达到100％。
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| 关 键 词： | 二氧化钛 叶绿素 敏化 光催化 灭菌 |
| 文章编号： | 1000-324X(2003)06-1261-06 |
| 收稿时间： | 2002-04-25 |
| 修稿时间： | 2003-04-25 |
Surface Morphology, Spectra and Photocatalytic Bactericidal Effect of Chlorophyll-Sensitizing TiO2 Crystalline Phases |
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| LI Min,WANG Zhen-Ling,SHI Heng-Zhen,ZENG Yi. Surface Morphology, Spectra and Photocatalytic Bactericidal Effect of Chlorophyll-Sensitizing TiO2 Crystalline Phases[J]. Journal of Inorganic Materials, 2003, 18(6): 1261-1266 |
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| Authors: | LI Min WANG Zhen-Ling SHI Heng-Zhen ZENG Yi |
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| Affiliation: | 1.DepartmentofChemistry;ZhoukouTeachersCollege;Zhoukou466000;China;2.ShanghaiInstituteofCeramics;ChineseAcademyofSciences;Shanghai200050;China |
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| Abstract: | Different crystalline TiO2 films prepared by the sol-gel method were modified by employing chlorophyll as the sensitizer, and characterized by XRD, AFM, UV-vis absorption spectra and Fluorescence emission spectra. The activity of killing the pathogenic bacteria of cabbage soft rot on chlorophyll-sensitized TiO2 film was investigated. The results show that three TiO2 nanocrystalline particles of anatase, mixed-crystalline and rutile sensitized by natural chlorophyll can effectively kill pathogenic cabbage-soft-rot bacteria under visible light. |
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| Keywords: | TiO2 chlorophyll sensitization photocatalyse bactericid |
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