| 过渡金属离子调变对光催化氧化反应的影响 |
| |
| 引用本文： | 张 颖,李朝晖,杨凌霄,王桂茹. 过渡金属离子调变对光催化氧化反应的影响[J]. 环境科学研究, 2000, 13(6): 40-42 |
| |
| 作者姓名： | 张 颖 李朝晖 杨凌霄 王桂茹 |
| |
| 作者单位： | 1.中国科学院 大连化学物理研究所,辽宁 大连 116012 |
| |
| 摘 要： | 考察过渡金属离子对TiO2光催化活性的影响，并对过渡金属离子对催化剂TiO2的光催化调变作用机理进行了初步探讨。结果表明，加入Cu(Ⅱ)可以大大提高TiO2的光催化活性，反应75 min，可使活性艳蓝X-BR的CODCr的去除率达75%以上，对于活性艳红X-3B和活性艳黄X-6G的CODCr的去除率达到90%以上。过渡金属离子的调变作用是由于低价的金属离子与H2O2作用生成*OH自由基所致。
|
| 关 键 词： | 二氧化钛 光催化氧化 活性艳黄X-6G 活性艳红X-3B 活性艳蓝X-BR |
| 收稿时间： | 1999-06-30 |
The Effect of Transition Metal Ions on Photocatalytic Oxidation in Aqueous Titanium Dioxide Suspensions |
| |
| ZHANG Ying,LI Zhao-hui,YANG Ling-xiao and WANG Gui-ru. The Effect of Transition Metal Ions on Photocatalytic Oxidation in Aqueous Titanium Dioxide Suspensions[J]. Research of Environmental Sciences, 2000, 13(6): 40-42 |
| |
| Authors: | ZHANG Ying LI Zhao-hui YANG Ling-xiao WANG Gui-ru |
| |
| Affiliation: | 1.Dalian Institute of Chemistry & Physics,Chinese Academy of Sciences,Dalian 116012,China2.Liaoning Imp.& Exp. Commodity Inspection Bureau,Dalian 116001,China3.College of Chemical Engineering,Dalian University of Technology,Dalian 116012,China |
| |
| Abstract: | This study focused on the effect of the dissolved transition metal ions on the photocatalytic oxidation in aqueous titanium dioxide suspensions and discussed the mechanism.The results indicated that the adding of a little amount of Cu(Ⅱ) can raise the photocatalytic oxidation efficiency,and the CODCr degradation of reactive red X-3B and reactive yellow X-6G is up to 90% and that of reactive blue X-BR is up to 75%,after reaction time of 75min.The improvement of the transition metal ions is due to product of *OH free radical from reaction of transition metals and H2O2. |
| |
| Keywords: | titanium dioxide photocatalytic oxidations reactive yellow X-6G reactive red X-3B reactive blue X-BR |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《环境科学研究》浏览原始摘要信息 |
|
点击此处可从《环境科学研究》下载全文 |
