氧化锌/硫化亚铁异质结乙醇气敏传感器的研究  

Study on Zinc Oxide/Ferrous Sulfide Heterojunction Ethanol Gas Sensor

作　　者：时吉进 叶森荣 罗锦鹏 张弛 何鑫[1,2] 杨为家 SHI Ji-Jin;YE Sen-Rong;LUO Jin-Peng;ZHANG Chi;HE Xin;YANG Wei-Jia(School of Applied Physics and Materials,Wuyi University,Jiangmen 529020,China;Jiangmen Key Laboratory of Micro-Nano Functional Materials and Devices,Jiangmen 529020,China)

机构地区：[1]五邑大学应用物理与材料学院,江门529020 [2]江门市微纳功能材料与器件重点实验室,江门529020

出　　处：《分析化学》2025年第3期375-386,共12页Chinese Journal of Analytical Chemistry

基　　金：广东省教育厅新一代电子信息(半导体)重点领域专项项目(No.2023ZDZX1031);五邑大学大学生创新创业训练项目(Nos.202311349320,202311349317);五邑大学-江门市鼎翔电子科技有限公司联合项目(No.HX23068)资助。

摘　　要：乙醇检测在食品工业、环境监测、医疗健康监测和预防酒驾等领域具有重要作用。本研究采用商用陶瓷银电极为衬底制备了氧化锌/硫化亚铁(ZnO/FeS)纳米异质结乙醇传感器,研究了传感器对乙醇气体的传感特性。结果表明,ZnO材料呈现纳米线结构,FeS以纳米片的形式包覆在ZnO纳米线上。传感器在相对湿度为30%~60%的环境中对乙醇具有良好的检测性能,检测范围为0.2~50 mg/m3。在300℃最佳工作温度下,构建的ZnO/FeS纳米异质结传感器对50 mg/m3乙醇的响应为15.6,响应时间为5.0 s,检出限低至0.101 mg/m3,明显优于商用乙醇传感器。与CO、NH3和丙酮等其它气体相比,此传感器对乙醇具有高选择性,并在长达30 d内能够稳定工作,在低成本、高性能乙醇气体检测领域具有良好的应用潜力。Ethanol detection plays an important role in food industry,environmental monitoring,medical health monitoring,prevention of drunk driving,etc.The development of low-cost,high-performance ethanol sensors has important application value.In this study,a ZnO/FeS nano heterojunction ethanol sensor was prepared on commercial ceramic silver electrode substrate.The sensing characteristics of the sensor for ethanol gas were systematically studied.The results showed that ZnO had a nanowire structure,and the FeS was coated on the ZnO nanowire in the form of nanosheets.The sensor performed well for ethanol detection in environments with relative humidity ranging from 30% to 60%,with a detection range from 0.2 mg/m^(3) to 50 mg/m^(3).At the optimum operating temperature of 300℃,the response of ZnO/FeS nano heterojunction sensor to 50 mg/m^(3) ethanol was 15.6,the response time was 5.0 s,and the detection limit was as low as 0.101 mg/m^(3),which was obviously better than that of commercial ethanol sensor.This sensor was highly selective for ethanol compared to other gases such as CO,NH_(3),acetone,etc,and could steadily work for 30 days.The fabricated sensor had good development potential in the field of low-cost and high-performance ethanol gas detection.

关 键 词：异质结 氧化锌 硫化亚铁 乙醇 气敏传感 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]