摘要
以InCl3·4H2O和NaOH为原料,在70℃利用液相沉淀反应合成前驱体,再经煅烧得到In2O3纳米粉体.利用SEM对其形貌进行表征,用XRD分析了不同煅烧温度对合成In2O3粉体尺寸的影响,最后在静态配气测试系统上检测元件的气敏性能.结果表明:该法制备的In2O3纳米粉体具有立方晶系结构、纯度较高、颗粒均匀呈球形、分散性好等特点,平均粒径60nm左右,并且In2O3气敏元件对酒精具有最高的灵敏度,在4.5V工作电压下对10×10-6浓度的酒精灵敏度达24.
InCl3·4H2O and NaOH were utilized as raw materials to prepare indium oxide nano-powder by the liquid precipitation method. Scanning electron microscopy （SEM）was adopted to characterize the crystal structure and morphology of In2O3 nano-powder,and X-ray diffraction （XRD）was adopted to analyze the influence of different calcination temperatures on the size of In2O3 nano-powder, and the gas match method at the static state was adopted to measure the gas sensing properties of In2O3 sensors. The results showed that the mean particle size of In2O3 nano-spheres was about 60 nm and the In2O3 gas sensors produced the quickest response to ethanol.
出处
《甘肃科学学报》
2014年第4期90-93,97,共5页
Journal of Gansu Sciences
基金
甘肃省科学院青年基金计划项目(2012QN-03)
关键词
In2O3纳米粉体
液相沉淀
焙烧温度
气敏特性
In2O3 nanopowder
Coprecipitation
Calcining temperature
Gas sensing properties
