电纺制备TiO2纳米线及煅烧对其光催化性能的影响.pdfVIP

学兔兔 第l3卷第6期 粉末冶金材料科学与工程 2008年l2月 Vb1．13 NO．6 Materials Science and Engineering of Powder Metallurgy Dec．2008 电纺制备TiO2纳米线及煅烧对其光催化性能的影响 陈莹莹，侯建梅，张溪文，韩高荣 (浙江大学 材料与化工学院无机非金属材料研究所，杭州 310027) 摘 要：以聚乙烯吡咯烷酮(PvP)为络合剂，与钛酸丁酯Ti(OC H9)4反应制得前驱体溶液，采用静电纺丝法制备 PVP／Ti(OC4H9)4纳米线，再在不同温度(350℃、400℃、450℃)下煅烧，得到具有光催化性能的TiO2纳米线。采 用XRD、FTIR、SEM对所制备的材料进行表征，并通过对罗丹明B溶液的降解研究探讨烧煅烧温度对TiO2纳米 线光催化性能的影响。结果表明，采用该方法成功制备了具有光催化性能的TiO2纳米线，当煅烧温度为400℃时， 纳米线的光催化性能最好，光催化率达到56．92％。 关键词：静电纺丝：TiO2；纳米线：光催化 中图分类号：TQ 134．11 文献标识码：A 文章编号：1673．0224(2008)6-352—04 Preparation of TiO2 nanofibres and influence of calcination temperature on photocatalytic activity CHEN Ying—ying，HOU Jian—mei，ZHANG Xi·wen，HAN Gao—rong (Inorganic Nonmetallic Materials Institute，Zhejiang University,Hangzhou 3 10027，China) Abstract：The TiO2 nanofibres wim photocatalytic efficiency are prepared by sol—gel and electrospinning methods as well as calcined at different temperatures(350，400 and 450℃，respectively)with Ti(OC4H9)4 and PvP aS raw materials．The structures and morphologies of the TiO2 fibe~are characterized by scanning electron microscopy and X-ray diffraction， both FTIR and photocatalytic measurements on Rhodamine B solution are performed to investigate the effect of calcinate temperature on photocatalytic efficiency．Resul~show that the photocatalytic TiO2 fibres are obtained，and the TiO2 fibres calcined at 400℃possess the optimal photocatalytic efficiency(photocatylytic rate reaches 56．92％、in all the prepared samples． Key wo