| TiO2光催化降解甲基橙速率的影响因素 |
| |
| 引用本文： | 李添宝,盛文兵,谢阳芬,陈水梅.TiO2光催化降解甲基橙速率的影响因素[J].湖南师范大学自然科学学报,2004,27(3):60-62. |
| |
| 作者姓名： | 李添宝 盛文兵 谢阳芬 陈水梅 |
| |
| 作者单位： | 湖南师范大学化学化工学院分析测试中心,中国,长沙,410081 |
| |
| 基金项目： | 湖南省教育厅资助项目(2303522) |
| |
| 摘 要： | 以锐钛矿型TiO2为光催化剂，以普通日光灯为激发光源，考察了甲基橙的初始浓度、溶液pH值、Cl^-的浓度以及通氧与否等条件对甲基橙光催化降解速率的影响．结果表明：甲基橙的初始浓度增大，其降解速度减小；酸性条件有利于甲基橙的光催化降解，在溶液pH值为3．0时，TiO2催化剂对甲基橙的光催化降解速率最大；在酸性溶液中通入氧气可提高甲基橙的光催化降解速度，而在碱性溶液中则结果相反；氯离子的浓度对甲基橙光催化降解速率影响不大．
|
| 关 键 词： | 光催化降解 甲基橙 初始浓度 TiO2催化剂 酸性条件 降解速度 光催化剂 速率 锐钛矿型 酸性溶液 |
| 文章编号： | 1000-2537(2004)03-0060-03 |
| 修稿时间： | 2004年2月17日 |
The Effects on Photocatalytic Degradation Rate of Methylorange with Anatase TiO2 as Photocatalyst |
| |
| LI Tian-bao SHENG Wen-bing XIE Yang-fen,CHENG Shui-mei.The Effects on Photocatalytic Degradation Rate of Methylorange with Anatase TiO2 as Photocatalyst[J].Journal of Natural Science of Hunan Normal University,2004,27(3):60-62. |
| |
| Authors: | LI Tian-bao SHENG Wen-bing XIE Yang-fen CHENG Shui-mei |
| |
| Abstract: | The effects of initial concentration of methylorange,pH value of solution, concentration of Cl~- and aerating oxygen or not on photocatalytic degradation rate of methylorange were investigated with anatase TiO_2 as catalyst under normal daylight lamp. The results show that the photocatalytic degradation rate of methylorange is hindered at higher initial concentration of methylorange; acid solution is more favorable for the photocatalytic degradation of methylorange; photocatalytic degradation rate is highest when pH value is 3.0; and aerating oxygen is also favorable in acid solution. But it is inverse in alkali. solution. And the concentration of Cl~- has no much effect on photocatalytic degradation rate of methylorange. |
| |
| Keywords: | TiO_2 photocatalytic degradation methylorange pH value |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
