传感技术学报2017，Vol.30Issue(5)：645-649,5.DOI:10.3969/j.issn.1004-1699.2017.05.002
氧化锌气体传感器的制备及甲烷检测特性研究
Fabrication and Sensing Properties of ZnO Based Gas Sensors to Methane
摘要
Abstract
Methane( CH4 ) ,a typical fault characteristic gas dissolved in transformer oil,can effectively indicate power transformer electric faults. Gas sensing technology is the key of on-line monitoring and analysis of trace gases dissolved in transformer oil. Low-dimensional ZnO nanosheets and ZnO nanospheres were synthesized with the hydro-thermal method,and gas sensors were fabricated with the synthesized samples. The detection characteristics of the sensor to the CH4 gas sensing were investigated based on the laboratory trace gas platform. Compared with the ZnO nanospheres based sensor, the ZnO nanosheets gas sensor exhibits enhanced sensing properties, including higher sensing response,lower operating temperature,high linearity in low concentration range from 1 to 20 and long-term stability. In addition,the best working temperature of the 50 μL/L CH4 was reduced by 60 ℃. All results provide a feasible way to develop high performance CH4 gas sensors based on ZnO nanosheets for practical application.关键词
气体传感器/氧化锌/甲烷/气敏性Key words
gas sensor/ZnO/CH4/gas-sensing performance分类
信息技术与安全科学引用本文复制引用
洪长翔,周渠,张清妍,刘洪呈,徐苓娜..氧化锌气体传感器的制备及甲烷检测特性研究[J].传感技术学报,2017,30(5):645-649,5.基金项目
国家自然科学基金项目( 51507144) （ 51507144）
重庆市自然科学基金项目( cstc2016jcyjA0400) （ cstc2016jcyjA0400）
