【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 O2 纤维与溶液的快速分离更多还原

【Abstract】 Titanium 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.更多还原