Pt/TiO2对水中黑索今的光催化降解  

STUDIES ON THE PHOTOCATALYTIC DEGRADATION OF RDX IN WATER BY Pt/TiO_2

作　　者：刘秀华[1] 龙素群[1] 邓义[1] 张玉川[1] 傅依备[1] 

机构地区：[1]核物理与化学研究所,中国工程物理研究院,绵阳621900

出　　处：《环境化学》2009年第4期479-482,共4页Environmental Chemistry

基　　金：中国工程物理研究院科学技术基金资助项目(20050546)

摘　　要：在模拟日光下利用Pt/TiO2光催化剂对水中黑索今进行了光催化降解.有催化剂存在时,黑索今(RDX)的转化降解遵循一级反应动力学.RDX分子上的氮部分转化为硝酸盐氮和亚硝酸盐氮.催化剂的存在没有加快黑索今的转化速率,但是大大加快了溶液COD和中间产物亚硝酸盐的氧化.对10mg.l-1亚硝酸盐的光催化降解显示,亚硝酸盐氮在有催化剂存在时被氧化的速率提高了16.8倍.Photocatalytic degradation of cyclotrimethylenetrinitramine（RDX） was done by using Pt/TiO2photocatalyst under the irradiation of simulant sunlight. The photocatalytic degradation of RDX followed first order kinetics. Nitryl of RDX molecule was translated into nitrite and nitrate ions. With catalyst, the conversion rate of RDX was not improved but the oxidation rate for COD of RDX solution and intermediate product of nitrite were increased greatly. The photoeatalysis degradation of 10mg.l^-1 nitrite showed that the oxidation rate of nitrite ions were enhanced 16. 8 times.

关 键 词：黑索今 光催化降解 动力学 亚硝酸根离子 

分 类 号：X132[环境科学与工程—环境科学]