H_3PW_(12)O_(40)/TiO_2(锐钛)的超声制备及降解染料的研究  

Ultrasonic Synthesis of H_3PW_(12)O_(40) /TiO_2 (anatase) for the Solar Photocatalytic Degradation of Organic Dye in Aqueous Environment

作　　者：李佳[1] 董晓丽[1] 董学伟[2] 

机构地区：[1]大连工业大学化工与材料学院,大连116034 [2]大连交通大学环境与化学工程学院,大连116028

出　　处：《化学通报》2010年第5期437-441,共5页Chemistry

基　　金：辽宁省教育厅创新团队项目(2007T005)资助

摘　　要：采用超声法,在80℃下,制备了H3PW12O40/TiO2(锐钛)复合催化剂,并采用XRD、FT-IR等方法对样品进行了表征。通过染料刚果红和亚甲基蓝为模拟污染物的光催化降解实验考察了复合催化剂的光催化活性。结果表明,在太阳光下,复合光催化剂的催化活性高于单体TiO2,H3PW12O40/TiO2(锐钛)在90min内,对溶液中刚果红的去除率达99.17%,对亚甲基蓝溶液的TOC去除率达73.17%。复合催化剂在反复实验5次后,仍能保持有效的催化性能。H3PW12O40 /TiO2（anatase） photocatalyst was prepared by a ultrasonic method through Ti（OC4H9）4 hydrolysis at 80℃ ,in which anatase phase was directly synthesized without high-temperature calcination.The product was characterized by XRD and FT-IR.The photocatalytic activities in solar irradiation of the as-prepared composite catalyst for the deterioration of organic dyes,Congo Red（CR） and Methylene Blue（MB） were better than that of TiO2 prepared in the same way.The catalytic activity was still better after reusing 5 times.

关 键 词：超声 锐钛矿 杂多酸 太阳光催化降解 

分 类 号：O643.36[理学—物理化学]