TiO_2粉末光催化还原Cr(Ⅵ)离子

Photocatalytic Reduction of Cr(Ⅵ) Ion Using TiO_2 Powders

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.