项目名称: 多钨酸盐修饰二氧化钛纳米线薄膜的制备与电致变色性能研究
项目编号: No.21301041
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 数理科学和化学
项目作者: 刘树萍
作者单位: 哈尔滨商业大学
项目金额: 24万元
中文摘要: 近年来,TiO2作为一种无机电致变色材料,因其物理化学性质稳定、无毒害、成本低等优点而受到了广泛的关注。但是,实际应用时TiO2还面临着一些问题比如光反差较低、响应时间较慢、着色效率较低以及稳定性较差等。本项目从TiO2的晶体结构和表面形貌等角度入手,设计合成TiO2纳米线材料;选择优异的多钨酸盐材料,将其修饰TiO2纳米线得到复合材料,通过调节材料比例及微结构,从而达到调控电致变色性能的目的;试图利用X射线光电子能谱、循环伏安、交流阻抗等手段考察电子、离子迁移,界面电荷转移以及反应动力学,探究变色过程的机理。本项目的成功实施将为进一步开发可实际用于的电致变色器件提供可靠的科学数据和理论基础。
中文关键词: TiO2纳米线;多钨酸盐;电致变色;;
英文摘要: Recently, titanium dioxide has received more attention due to its peculiar properties such as chemical stability, environ-mentally friendly and being low cost. However, TiO2-based films still show drawbacks in terms of their practical application for electrochromic devices. For example, low optical contrast, switching kinetics and coloration efficiency remain as disadvantages in the fabrication of real devices. In this project, we will design and synthesis of TiO2 nanowire by means of TiO2 crystal structure and surface morphology, and we will fabricate the composite film containing TiO2 nanowire and polyoxotungstate. The electrochromic properties of polyoxotungstate-modified TiO2 nanowire film will be regulated by means of material proportion and microstructure. In addition, X-ray photoelectron spectroscopy, cyclic voltammetry and AC impedance will be chosen to evaluate the electron, ion mobility, interfacial charge transfer, reaction kinetics and mechanism. The successful implementation of this project will further develop practical for electrochromic devices to provide scientific data and reliable theoretical basis.
英文关键词: TiO2 nanowires;polyoxotungstate;electrochromism;;