摘要
本文以廉价的SnCl_4·5H_2O为母盐,分别以NH_3·H_2O为沉淀剂,采用溶胶—凝胶法和以CO(NH_2)_2为沉淀剂,利用微波水热法制备SnO_2纳米粉体。利用X-射线衍射(XRD),傅里叶变换红外光谱(FT-IR),透射电镜(TEM)技术对产物进行表征。结果表明:溶胶—凝胶法制备的SnO_2粉体颗粒约为80nm但颗粒大小分布不均匀,微波水热法制备的SnO_2粉体颗粒约为60nm,颗粒大小分布比较均匀;微波水热法合成的SnO_2粉体的分散性较好,而溶胶—凝胶法制备的SnO_2粉体存在着明显的团聚现象;以微波水热法制备的二氧化锡为样品,制成厚膜气敏传感器元件,通过不同温度下对1000ppm乙醇的灵敏度测试,可知,370℃为元件对乙醇灵敏的最佳工作温度,灵敏度为20.5。
In this paper,low-cost SnCl_4 5H_2O as raw material,SnO_2 nano-powders were prepared using NH_3 H_2O as precipitant by sol-gel method and CO（NH_2）_2as precipitant by hydrothermal synthesis under microwave irradiation respectively.The products were characterized by XRD,FT-IR and TEM.The results indicate that;the particles whose diameter is 80nm are prepared by sol-gel method,and they are nonuniform distribution.Using microwave hydrothermal synthesis,the diameter of particles is about 60nm and they are uniform distribution.The agglomerations between particles are obvious when using sol-gel method.However,the dispersity of the particles obtained by microwave method is good.The sensitivity to 1000ppm alcohol was tested at different temperatures to SnO_2 prepared by microwave hydrothermal.The results show that,370℃is the best working temperature to 1000ppm alcohol for the sensor,and the sensitivity is 20.5.
出处
《山东陶瓷》
CAS
2011年第3期18-22,共5页
Shandong Ceramics
