非离子表面活性剂存在下光催化降解有机颜料  

Study of Photocatalytic Degradation of Organic Pigment in the Presence of Nonionic Surfactant

作　　者：张天永[1] 扈娟[1] 柴义[1] 张友兰[1] 赵进才[2] 

机构地区：[1]天津大学化工学院,天津300072 [2]中国科学院化学研究所分子科学中心光化学重点实验室,北京100080

出　　处：《分子催化》2007年第2期149-154,共6页Journal of Molecular Catalysis(China)

基　　金：教育部留学回国人员科研启动基金(教外司留[2002]247);中国科学院化学研究所光化学重点实验室开放基金;天津市自然科学基金(033604711).

摘　　要：研究了加入非离子表面活性剂OP-10时有机颜料光催化降解过程,实验选用的颜料为艳红6B(C.I.Pigment Red482),以高压汞灯为光源,TiO2为催化剂.通过改变水溶液的pH值和OP-10的浓度,考察了颜料和OP-10各自的降解特性.实验结果表明,酸性条件下,OP-10的存在明显加快了颜料的降解,碱性条件下反而抑制了颜料的降解.中性条件下,OP-10的增溶对体系的降解有一定影响,浓度为0.126g/L(2.5cmc)时,颜料和OP-10降解效果最好.The present thesis is related to the photocatalytic degradation process of an organic pigment, for example, C. I. Pigment Red 48 ： 2（R6B）, in the presence of photo catalyst TiO2 under irradiation of high pressure Hg lamp. Added with nonionic surfactant OP-10, the experiments were mainly focused on the effects of pH in aqueous solution, concentration of OP-10 on the degradation process of R6B and OP-10. The experimental results showed that OP-10 improved remarkably the degradation rate of R6B in acidic media while lowered the degradation rate in alkaline media. In neutral conditions, OP-10 enhanced the solubility of R6B/TiO2 system, which sightly affected the degradation process. Especially in case of 0. 126 g/L （2.5 cmc）, a better conversion trend of R6B and OP-10 occurred.

关 键 词：光催化氧化 有机颜料 二氧化钛 紫外光 OP-10 

分 类 号：O543.32[理学—物理]