电子元件与材料2011，Vol.30Issue(11)：22-25,4.
溶胶-凝胶法制备H2S气敏材料LaFeO3
Preparation of H2S sensing material LaFeO3 by sol-gel method
摘要
Abstract
The nano-LaFeO3 was prepared by sol-gel method using La(NO3)3 · 6H2O, Fe(NO3)3 · 9H2O and citric acid-as raw materials. The structure and morphology of the prepared LaFeO3 were characterized with XRD and SEM. The gas-sensing properties of the prepared LaFeO3 were tested by static distribution. The influence of the calcination temperature on gas-sensing properties of the prepared LaFeO3 was investigated. The results show that pure perovskite LaFeO3 which is a kind of irregular and massive particle, can be obtained by calcining both at 600 and 800 ℃ for 2 h, and the LaFeO3 calcined at 600 ℃ possesses remarkable sensitivity and good selectivity to H2S gas. The gas sensitivity can reach 141.6 to H2S of 100×10-6(volume fraction) and 13.0 to H2S of 10×10-6 (volume fraction) at the working temperature of 295 ℃, respectively.关键词
溶胶-凝胶法/纳米LaFeO3/煅烧温度/H2S气敏Key words
sol-gel method/ nano-LaFeO3/ calcination temperature/ H2S gas-sensing分类
信息技术与安全科学引用本文复制引用
赵晓华,娄向东,李萌,李新莉..溶胶-凝胶法制备H2S气敏材料LaFeO3[J].电子元件与材料,2011,30(11):22-25,4.基金项目
河南省教育厅自然科学研究计划资助项目(No.2010B150017) （No.2010B150017）
河南省基础与前沿技术研究计划资助项目(No.112300410207) （No.112300410207）
