摘要
研究以TiO2粉末作为光催化剂,光催化还原Cr(VI)离子.结果表明,12.0mg/LCr(VI)离子375W中压汞灯照射35min可被完全光催化还原至Cr(III)离子;探讨了光催化剂TiO2的用量,反应液初始州值,外加Cu(2+).敌敌畏农药及甲苯对Cr(VI)离子光催化还原的影响;并解释了影响的机理.
The Photocatalytic reduction of Cr(VI) ion using TiO2 powders as a Photocatalyst was studied.The results showed that 12.0mh/L of Cr(VI)ion can be completely Photocatalyticallyreduced into Cr(Ⅲ) after 35min illumination with a 375W medium pressure mercury lamp.Theeffects of factors such as the amount of TiO2 initial pH concentrations of Cu(2+) dichlorvos and toluene on the photocatalytic reduction of Cr(VI) ion were also investigated.The mechanisms ofeffeCt were explained.
出处
《淮北煤师院学报(自然科学版)》
1999年第1期38-42,共5页
Journal of Huaibei Teachers College(Natural Sciences Edition)
基金
安徽省自然科学基金
关键词
光催化
还原
铬离子
二氧化钛粉末
Cr(Ⅵ) ion Photocatalytic reduction titanium dioxide powders