摘要
采用溶胶-凝胶技术分别在0.45、1.3 mol/L SnCl2乙醇溶液和0.9 mol/L SnCl2乙二醇溶液3种体系下合成了纳米SnO2粉体,通过XRD和TEM对其结构进行了表征,并对NanoSnO2传感器进行了气敏特性和研制条件的分析.结果表明制作传感器的最佳烧结温度为660℃,加热电压控制在5 V,使其表面温度达到200～250℃,此时传感器的气敏性能最好,而且在0.45 mol/L SnCl2乙醇溶液用溶胶-凝胶法制得的SnO2纳米酒精传感器的气敏性能最好.
Nanometer SnO2 gas sensing material was made by different precursor compounds with sol-gel method,which were 0.45 mol/L SnCl2 ethanol solution,1.3 mol/L SnCl2 ethanol solution and 0.9 mol/L SnCl2 ethanediol.Crystal structure and surface morphology were examined by XRD and TEM,the mean grain size was calculated with the Debye-Scherrer equation.Their gas-sensing characteristics with different particle size were also researched.The optimal sintering temperature was about 660 ℃ through experiment.The heating voltage was regulated in the range of 5~6 V,the surface temperature would reach about 200~250 ℃.It was shown that nanocrystal SnO2 made by 0.45 mol/L SnCl2 solution had the best gas sensitivity.
出处
《四川师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第1期101-104,共4页
Journal of Sichuan Normal University（Natural Science）
基金
甘肃省科学技术厅技术与专项计划基金(0709TCYA046)资助项目
关键词
纳米SNO2
吸附
烧结
气敏特性
nanocrystal
SnO2
adsoption
sintering temperature
gas-sensing characteristic
