污染控制技术及原理
钟先锦,张凌,李德亮,李桂敏,陶莹.纳米TiO2光催化降解对甲基苯磺酸的研究[J].环境科学学报,2007,27(11):1835-1839
纳米TiO2光催化降解对甲基苯磺酸的研究
- Degradation of 4-toluene sulfonic acid by photocatalysis of nano-TiO2
- 基金项目：河南省国际科技合作项目(No.0546640002)
- 作者
- 单位
- 钟先锦
- 河南大学化学化工学院, 开封 475001
- 张凌
- 河南大学化学化工学院, 开封 475001
- 李德亮
- 河南大学化学化工学院, 开封 475001
- 李桂敏
- 河南大学化学化工学院, 开封 475001
- 陶莹
- 开封市环境科研设计所, 开封 475000
- 摘要：采用TiO2/UV光催化降解法处理对甲基苯磺酸的水溶液,探讨了二氧化钛的投加量、溶液的初始浓度、溶液的pH、紫外光照射时间和强度、常见无机离子等因素对对甲基苯磺酸的降解效率的影响.结果表明,在浓度为0.030g·L-1对甲基苯磺酸溶液中,光催化剂TiO2最佳投加量为0.10g·L-1,控制空气分压为5.2kPa,紫外光照射2h,溶液为中性时,对甲基苯磺酸废水降解率达到67.4%.二氧化钛的用量、溶液的pH是影响纳米Ti
- Abstract：Photocatalytic degradation of 4-Toluene sulfonic acid in aqueous solution by TiO2 under UVirradiation was studied. The effects of quantity of TiO2, concentration of 4-Toluene sulfonic acid,time and intensity of UVradiation, pHvalue of solution, and common inorganic ions was investigated. The results show that the optimal quantity of TiO2 was 0.10 g·L-1 in 0.030g·L-14-Toluene sulfonic acid solution under an air pressure of 5.2 kPa. Under those conditions, the degradation efficiency of 4-Toluene sulfonic acid was 67.4 % after 2 h UVirradiation at pH 7. The quantity of TiO2 and solution pHwere the main factors affecting the degradation of 4-Toluene sulfonic acid by nano-TiO2 The influences of some common inorganic ions were also studied, and the result was satisfying.
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