TiO_2纤维的制备及其光催化活性研究  

Preparation of Titanium Dioxide Fibers and Their Photocatalysis Reactivity

作　　者：杨祝红[1] 暴宁钟[1] 刘畅[1] 冯新[1] 谢敬伟[1] 吉晓燕[1] 陆小华[1] 

机构地区：[1]南京化工大学化工学院,南京210009

出　　处：《高等学校化学学报》2002年第7期1371-1374,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学杰出青年科学基金 (批准号 :2 992 5 616);江苏省科委应用基础研究基金 (批准号 :BJ980 60 );江苏省自然科学基金 (批准号 :BS2 0 0 0 0 13 )

摘　　要：K2 Ti4 O9纤维为前驱体经过离子交换合成纤维 Ti O2 .通过甲基橙废水模型体系考察了纤维 Ti O2 的光催化活性 ,同时研究了在不同 p H值条件下 Ti O2 纤维分散体系的稳定性能 .结果表明 ,Ti O2 纤维光催化活性与微米级 Ti O2 相当 ,且控制溶液的 p H值可实现 Ti O2Titanium dioxide fibers(TiO 2) were prepared from K 2Ti 4O 9 fiber precursors by ion exchange reaction in hydrochloric acid. The photocatalytic reactivity of titanium dioxide fibers was studied with helianthin B as a model compound of waste water and the property of suspension sedimentation at different pH values was studied. The results show that TiO 2 fibers have good photocatalysis properties equivalent to the commercial micron size TiO 2. Furthermore, the serious agglomeration appears at pH=6.0 and can be easily separated from solution.

关 键 词：光催化活性 TiO2纤维 光催化 甲基橙 废水处理 悬浮沉降性质 

分 类 号：X703.1[环境科学与工程—环境工程] O643.3[理学—物理化学]