纳米二氧化钛介孔微球光催化降解水中BPA的机理  

Photocatalytic Degradation Mechanism of Bisphenol A in Water by Mesoporous Titanium Dioxide Microspheres Catalysts

作　　者：郝玉兰[1] 周延明[2] 刘钊[3] 周立军[2] 李清钊[1] 刘璐[3] 

机构地区：[1]河北联合大学公共卫生学院,河北省唐山市063000 [2]唐山钢铁集团有限责任公司,河北省唐山市063016 [3]南开大学环境科学与工程学院,天津市300071

出　　处：《光谱实验室》2012年第2期1128-1132,共5页Chinese Journal of Spectroscopy Laboratory

基　　金：唐山市科学技术研究与发展计划项目(08130204A-1-26)

摘　　要：描述了两种不同三维二氧化钛介孔球对水悬浮液中BPA的光降解效果,结果发现紫外线照射下两种三维二氧化钛介孔球的光催化效果要优于P25型二氧化钛,且微球孔隙越小,对BPA的降解效果越好;运用HPLC-MS以及HPLC-MS-MS联用技术对降解中间产物进行定性分析,并且对BPA光催化降解机理进行分析。发现在光催化降解过程中形成5种主要的中间产物并对它们的演变过程进行了讨论。根据分析测定得到的降解中间产物,提出了一个关于两种二氧化钛介孔球光催化剂对BPA降解的详细路径。The photodegradation effects of two different kind of three-dimensional titanium dioxide microspheres on bisphenol A（BPA） in water suspension were described,and the photodegradation effects of two different kind of three-dimensional titanium dioxide microspheres were better than that of P25 type titanium dioxide under the ultraviolet irradiation,and the holes of microspheres were smaller,and the degradation effects of BPA were better.The degradation intermediate product was qualitatively analyzed by HPLC-MS and HPLC-MS-MS coupling technique,and the photocatalytic degradation mechanism of BPA was analyzed.The 5 kind of important intermediate products were formed in photocatalytic degradation process,and the evolution processes of products were investigated.According to analysis of obtaining degradation products,a detailed path for degradation of BPA by two kind of titanium dioxide microspheres catalysts was proposed.

关 键 词：纳米二氧化钛 光催化降解 双酚A 

分 类 号：O657.72[理学—分析化学] O657.63[理学—化学]