|
|||||
|
|
| 不同掺铁方式对TiO2薄膜光催化活性的影响 | |
| 引用本文： | 梁园园,李新军,王良焱,李芳柏,柳松,张琦.不同掺铁方式对TiO2薄膜光催化活性的影响[J].中国有色金属学报,2002,12(6):1304-1308. |
| 作者姓名： | 梁园园 李新军 王良焱 李芳柏 柳松 张琦 |
| 作者单位： | 1. 中国科学院,广州能源研究所,广州,510070;华南理工大学,应用化学系,广州,510640 2. 中国科学院,广州能源研究所,广州,510070 3. 中国科学院,广州能源研究所,广州,510070;广东省农业环境与综合治理重点实验室,广东省生态环境与土壤研究所,广州,510650 4. 华南理工大学,应用化学系,广州,510640 |
| 基金项目： | 广东省自然科学基金资助项目(010873); 广东省科技计划项目(A3040301) |
| 摘 要： | 采用溶胶凝胶工艺在普通玻璃表面制备出表面掺铁与体相掺铁的TiO2 薄膜。运用SEM ,XRD和AES等技术研究了复合薄膜的表面特征。以光催化降解甲基橙溶液为模型反应 ,表征薄膜的光催化活性。结果表明 :体相掺铁时 ,薄膜的最佳n(Fe) /n(Ti)为 0 .12 %;表面掺铁时 ,薄膜的最佳n(Fe) /n(Ti)为 1.5 %。表面掺铁薄膜的最佳光催化表观速率常数比体相掺铁的最佳值要高 1.5倍。并从载流子分离效率等方面进行了机理探讨。 |
| 关 键 词： | 表面掺铁 体相掺铁 二氧化钛薄膜 光催化活性 |
| 文章编号： | 1004-0609(2002)06-1304-05 |
| 修稿时间： | 2002年6月24日 |
Effects of iron impurities on photo-catalytic activity of TiO2 thin films |
|
| LIANG Yuan-yuan ,LI Xin-jun ,WANG Liang-yan ,LI Fang-bai ,LIU Song ,ZHANG Qi.Effects of iron impurities on photo-catalytic activity of TiO2 thin films[J].The Chinese Journal of Nonferrous Metals,2002,12(6):1304-1308. | |
| Authors: | LIANG Yuan-yuan LI Xin-jun WANG Liang-yan LI Fang-bai LIU Song ZHANG Qi |
| Affiliation: | LIANG Yuan-yuan 1,2,LI Xin-jun 1,WANG Liang-yan 1,LI Fang-bai 1,3,LIU Song 2,ZHANG Qi 1 |
| Abstract: | Surface iron-doped and bulk iron-doped TiO 2 composite thin films deposited on glass substrates were prepared by sol-gel technology. The properties of the films were investigated by means of SEM, XRD and AES. The photo-catalytic activity of films was investigated by using the model reaction of the photo-catalytic degradation of methyl orange. The results show that the optimal n(Fe)/n(Ti) of bulk iron-doped TiO 2 thin films is 0.12%, while that of surface iron-doped TiO 2 thin films is 1.5%. Moreover, the maximum first-order kinetic rate constant, k, of surface iron-doped TiO 2 thin films is more 1.5 times than that of bulk iron-doped TiO 2 thin films. The doping mechanisms were discussed based on the charge carriers separated efficiency theory. |
| Keywords: | surface iron-doped bulk iron-doped TiO 2 composite film photo-catalytic activity |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |