| 引用本文: | 赵淑梅,李玉胶,朱春城,周育红.外界条件对纳米TiO2光催化性能的影响[J].哈尔滨工业大学学报,2010,42(2):333.DOI:10.11918/j.issn.0367-6234.2010.02.033 |
| ZHAO Shu-mei,LI Yu-jiao,ZHU Chun-cheng,ZHOU Yu-hong.Effect of external conditions on photocatalytic properties of nano-TiO2[J].Journal of Harbin Institute of Technology,2010,42(2):333.DOI:10.11918/j.issn.0367-6234.2010.02.033 |
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| 摘要: |
| 为找到纳米TiO2的最佳催化条件,以钛酸丁酯为原料,采用溶胶-凝胶法制备纳米级的掺杂Fe3+的TiO2粉末.通过XRD确定其相组成,利用紫外可见分光光度计测定光催化活性,研究外界条件包括光强度、溶液的pH值及环境温度对光催化反应的影响.结果表明:光强度在一定范围内越大光催化活性越高;pH值在4时光催化活性最大;环境温度对光催化反应无太大影响.在较高的光强度、pH=4的条件下光催化活性最好. |
| 关键词: 溶胶凝胶 光强度 TiO2 光催化性能 |
| DOI：10.11918/j.issn.0367-6234.2010.02.033 |
| 分类号:O643.36 |
| 基金项目:哈尔滨师范大学国家预研基金资助项目(2008XYG-03);黑龙江省自然科学基金资助项目(E2007-09) |
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| Effect of external conditions on photocatalytic properties of nano-TiO2 |
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ZHAO Shu-mei1,2, LI Yu-jiao2, ZHU Chun-cheng2, ZHOU Yu-hong3
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1.Chemistry Department,Heilongjiang College of Education,Harbin 150080,China;2.Institute of Chemistry and Chemical Engineering,Harbin Normal University,Harbin 150025,China;3.Department of Chemistry,Harbin Institute of Technology,Harbin 150001,China)
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| Abstract: |
| In order to find the optimal photocatalytic conditions for nano-TiO2,the Fe3+-doped nano TiO2powder was prepared by sol-gel method using butyl titanate as raw material.Its composition was determined by XRD.Its photocatalytic properties were examined by UV-Vis,and the effect of external conditions including light intensity,pH value and surrounding temperature was disscused.Results indicate that in a certain range,the photocatalytic activity is enhanced with the increased light intensity,and the highest photocatalytic activity is achieved when pH =4,while the ambient temperature has little effect on photocatalytic reaction. |
| Key words: sol-gel light intensity TiO2 photocatalytic properties |
