摘要
以煤基炭为硬模板、醋酸锌为锌源,采用高温焙烧法制备了具有优异晶体结构和孔隙特性的ZnO纳米材料,探究了基于该ZnO材料的气体传感器对乙醇的气敏性能。结果表明:在工作温度200℃时,ZnO传感器对低质量分数乙醇气体具有较高灵敏度,响应值可达5.25;ZnO传感器对质量分数为1×10^(-5)乙醇气体的响应时间和恢复时间分别为10 s和6 s;ZnO传感器灵敏度与乙醇气体质量分数呈线性关系,检测下限可达1×10^(-7);ZnO传感器对醋酸、甲醇、氨水、甲烷等气体的灵敏度较低,对乙醇气体灵敏度高,具有优异的气体检测选择性。
With coal-based carbon as a hard template and zinc acetate as zinc source,a kind of ZnO nanomaterial with excellent crystal structure and pore properties was synthesized by adopting high-temperature roasting process.Then,the sensitivity of a gas sensor based on this ZnO nanomaterial to ethanol gas was investigated.The results are shown as follows:such ZnO sensor at 200 ℃ presents higher sensitivity to lowly-concentrated ethanol gas,with a response value of 5.25;the response time and recovery time of the ZnO sensor to the ethanol gas with concentration of 1×10~(-5)are 10 s and 6 s respectively;the ZnO sensor has its sensitivity to ethanol gas in a linear relationship with the concentration of ethanol gas,and can detect the lowest concentration level of 1×10~(-7);the ZnO sensor has a lower sensitivity to those kinds of gas,including acetic acid,methanol,ammonia and methane.Due to its higher sensitivity to ethanol gas,it is concluded that such sensor presents excellent selectivity in gas detection.
作者
王驰骋
刘天豪
吴浩宇
袁浩东
陈享享
WANG Chicheng;LIU Tianhao;WU Haoyu;YUAN Haodong;CHEN Xiangxiang(Zijin School of Geology and Mining,Fuzhou University,Fuzhou 350108,Fujian,China;Fujian Key Laboratory of Green Extraction and High-Value Utilization of New Energy Metals,Fuzhou 350108,Fujian,China)
出处
《矿冶工程》
CAS
北大核心
2024年第6期129-133,共5页
Mining and Metallurgical Engineering
基金
国家自然科学基金(52004069)。
关键词
气体传感器
气敏材料
煤基炭
硬模板法
氧化锌
乙醇
气敏性能
gas sensor
gas-sensing material
coal-based carbon
hard templating
zinc oxide
ethanol
gas sensitivity
