煤基炭硬模板制备ZnO气敏材料及其对低质量分数乙醇气体的检测  

ZnO Synthesized by Hard Templating with Coal-Based Carbon Used as Gas-Sensing Material in Detection of Lowly-Concentrated Ethanol Gas

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)

机构地区：[1]福州大学紫金地质与矿业学院,福建福州350108 [2]福建省新能源金属绿色提取与高值利用重点实验室,福建福州350108

出　　处：《矿冶工程》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)。

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.

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 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]