【作者】 梁建； 马淑芳； 孙彩云； 许并社；

【Author】 Liang Jian, Ma Shufang, Sun Caiyun, Xu Bingshe(College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi,China 030024)

【机构】 太原理工大学材料科学与工程学院；

【摘要】 本文采用水热法,通过控制制备过程中的反应温度、反应时间、pH值以及配料比,制备出一种TiO₂纳米粉体。经过产物的X-射线粉末衍射和高分辨图像分析,结果表明用简单的水热法即可得到高比表面积、高长径比的二氧化钛纳米管,管壁为层状结构。其紫外吸收谱显示:TiO₂纳米管是宽带半导体,能带宽度为3.2eV,并出现蓝移现象。更多还原

【Abstract】 Though controlling temperature and time of reaction ,pH value and ration of raw material, nanometer powders of TiO2 were prepared by hydrothermal method . The results showed that the samples were T iO2 nanotube with large specific surface and high ratio of length to diameter, whose tube-wall is layer-structured according to analysis of XRD, SEM and HRTEM. Absorption experiments showed that TiO2 nanotube were wide-band semiconductors with a band-width Eg-3.2eV and present blue shift effect.更多还原