摘要
以汞灯为光源 ,TiO2 为催化剂 ,对菲的光催化降解途径进行了研究 .将水溶性极小的菲预先吸附到TiO2 上之后 ,菲可以在紫外线的照射下发生快速、完全的矿化 .通过GC MS手段检测到一些中间产物 ,给出了菲光催化降解的详细途径 .另外 ,研究了菲在表面活性剂十六烷基三甲基溴化铵 (HTAB)的助溶下TiO2 催化的光降解过程 ,探讨了表面活性剂的浓度和溶液 pH值对反应速率的影响 .
The photocatalytic oxidation of phenanthrene was investigated in aqueous TiO 2 suspensions under UV light irradiation.The phenanthrene was preadsorbed on TiO 2 and underwent a fast and complete mineralization.In the process,some intermediate products were detected by GC MS,the pathway of phenanthrene degradation was described.In another system,a cationic surfactant hexadecytrimethylammonium bromide(HTAB) was used to increase the solubility of phenanthrene and to accelerate the photooxidation of phenanthrene,the effect of concentration of HTAB and pH was also studied.
出处
《感光科学与光化学》
CSCD
北大核心
2002年第6期405-410,共6页
Photographic Science and Photochemistry
基金
国家自然科学基金 (4 9872 0 92 )
国家实验室创新基地基金 (0 0 1 1 0 8)
