不同形态低维ZnO晶须的制备及表征  

Preparation and Characterization of Different Topography Low Dimensional ZnO Whiskers

作　　者：陈尔凡[1] 张黎[2] 

机构地区：[1]沈阳化工学院,沈阳110142 [2]沈阳职业技术学院,沈阳110045

出　　处：《材料工程》2008年第6期1-4,共4页Journal of Materials Engineering

基　　金：国家自然科学基金重点项目(59431040);辽宁省自然科学基金资助项目(9810301003);辽宁省教育厅科学基金(202213109);沈阳市重点科研基金资助项目(1032040-1-03-01)

摘　　要：采用热蒸发法制备出高纯度线状、棒状、多脚状的不同形态ZnO晶须材料。研究了氮气流量、反应温度、反应时间（保温时间）等因素对产物规整率、转化率及长径比的影响。利用SEM对产物形态进行表征。结果表明：采用不同条件的热蒸发法可制备出高质量不同形态的ZnO晶须。反应过程中锌蒸压气对产物形态的影响较大。以陈化锌粉为原料，在1000-1100℃保温较短的时间，并始终以0.2m^3/h通入高纯氮气，得到棒状晶须；保温时间较长，得到线状晶须。而多脚状ZnO晶须则是在通入高纯氮气时间较短的情况下得到的。The different morphologies of high-quality ZnO whisker materials have been synthesized by thermal evaporation methods, which include wires, rods, and multiple morphologies. Effect of N2 feed rate, reaction temperature and reaction time on regular ratio, percent conversion and ratio of length and diameter is researched. The morphologies of the whiskers were characterized by SEM. The result shown that high-quality different morphologies of ZnO whiskers can be synthesized by thermal evaporation method in different conditions. The fractional pressure of zinc vapor plays an important role in forming the different morphologies of whiskers. Take the aging zinc powder as source material, heat preserve at 1000-1100℃ for less than 60 min and inlet high purity nitrogen at the rate of 0.2m^3/h all the time, ZnO rods can be obtained. When the reaction time is longer, ZnO wires can be obtained. When the time of inletting high purity nitrogen is shorter, multiple morphologies can be obtained.

关 键 词：ZnO晶须 制备 不同形态 热蒸发法 

分 类 号：TQ132.41[化学工程—无机化工]