传感技术学报2015，Vol.28Issue(9)：1288-1291,4.DOI:10.3969/j.issn.1004-1699.2015.09.004
基于ZnFe2O4纳米材料的低温型H2S气敏元件的设计与实现
Design and Fabrication of H2S Gas Sensor at Low Temperature Based on ZnFe2O4 Nanocrystalline
摘要
Abstract
ZnFe2O4 nanocrystalline has been prepared from Zn(NO3)2·6H2O and Fe(NO3)3·9H2O by solution method for preparation of thick film gas sensor.The crystal structure and particle size of the samples are characterized by XRD and TEM. The results show that the powder of ZnFe2O4 is Spinel-type,and the mean grain size of the powder is about 14 nm in a range of 10 nm~30 nm. The gas sensing properties of the materials are tested in static slate at temperatures ranging from 40 to 400℃,revealing that the sensitivity of sensor to 1 × 10-3(V/V0)and 1 × 10-4(V/V0)H2S can reach 244.34 and 83.31 at working temperature of 150℃. At the optimum working temperature,its response and recovery time are 2 and 5 s. It has a high sensitivity of 111.00 when exposed to 1×10-3(V/V0)H2S at lower working temperature of 40℃.关键词
H2S气体/气敏性能/ZnFe2O4纳米粉体/低温Key words
H2S/gas sensing properties/ZnFe2O4/low temperature分类
信息技术与安全科学引用本文复制引用
燕音,帕提曼·尼扎木丁,阿布力孜·伊米提..基于ZnFe2O4纳米材料的低温型H2S气敏元件的设计与实现[J].传感技术学报,2015,28(9):1288-1291,4.基金项目
国家自然科学基金项目(21265020) （21265020）
