光催化
锐钛矿
材料科学
二氧化钛
纳米纤维
静电纺丝
膜
化学工程
退火(玻璃)
制作
多孔性
纳米技术
钛
复合材料
催化作用
聚合物
有机化学
冶金
化学
医学
替代医学
病理
工程类
生物化学
作者
Xiwen Zhang,Shiyou Xu,Gaorong Han
标识
DOI:10.1016/j.matlet.2009.05.038
摘要
Titanium dioxide is one of the best semiconductor photocatalysts available for photocatalysis. In this paper, titanium dioxide nanofiber membranes are prepared by post-anneal-assisted electrospinning process. The obtained membrane is composed of anatase titanium dioxide continuous and porous nanofibers with diameters ranging from 65 to 115 nm. An optimized annealing scheme is determined. Photocatalytic measurements show that the photocatalytic efficiency of the anatase TiO2 nanofiber membrane is 72%, which is highly superior to that of the anatase TiO2 thin film (44%). It is believed that the large specific surface area intensively enhances the photocatalytic reactions and the good shape retention might be favorable for recuperability and practicality. The potential applications for environmental purification are discussed.
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