纳米TiO_2光催化降解含油污水中HPAM的研究  

A study on nano-titanium dioxide photocatalytic degrading polyacrylamide solution of oil-containing waste

作　　者：李金环[1] 康万利[2] 张雪娜[1] 闫文华[1] 刘忠和[1] 

机构地区：[1]大庆石油学院石油工程学院,黑龙江大庆163318 [2]中国石油大学教育部石油工程重点实验室,山东青岛266555

出　　处：《化工科技》2008年第2期13-17,共5页Science & Technology in Chemical Industry

基　　金：黑龙江省杰出青年科学基金资助项目(J03-11);黑龙江省教育厅海外学人资助项目(1055HZ034)

摘　　要：用溶胶-凝胶法制备了锐钛矿型纳米TiO2,研究了合成催化剂反应条件对光催化降解含油废水中聚丙烯酰胺(HPAM)的影响。确定了最佳反应条件分别为:煅烧温度在500℃时,光催化活性达到最高,随着煅烧温度的升高,催化剂晶型从锐钛矿向金红石型转化,转型温度为600℃,有金红石型晶体出现时催化活性降低;最佳老化时间约为1 d;随着醇用量的增加,制备出来的TiO2其光催化活性也逐渐升高,当V(钛酸丁酯)∶V(醇)=10:80时,催化剂活性最高,继续增加,催化活性降低;随着水量的增加催化活性增强,当V(钛酸丁酯)∶V(水)=100:40时,制备出的TiO2催化活性最大,继续增加催化活性下降。Anatase nanocrystallin TiO2 was prepared by sol-gel method. The conditions of synthesis catalyst was studied according to effect of photocatalytic degrading polyacrylamide solution of oil-containing waste. The best reaction conditions were gained： when calcination temperature is 500℃, catalytic activity achieved high,along with calcination temperature elevating, the catalyst crystal transforming from the anatase to the rutile, the reforming temperature is 600℃, and when there is rutile in the crystal catalytic activity reduce; The aging time is about 1 day; Along with ethanol increasing, catalytic activity of TiO2 gradually elevates,when ratio of Ti（OBu）4 and alcohol is 10：80,catalytic activity is highest, continuing to increase alcohol catalytic activity decreasing. Along with increasing water cata-lytic activity strong, when ratio of Ti（OBu） 4 and water is 100： 40, catalytic activity of TiO2 is biggest, continuing to increase water catalytic activity decreasing.

关 键 词：溶胶-凝胶 光催化降解 纳米TIO2 聚丙烯酰胺 

分 类 号：O643.36[理学—物理化学]