Study on Zinc Oxide/Ferrous Sulfide Heterojunction Ethanol Gas Sensor
10.19756/j.issn.0253-3820.241442
- VernacularTitle:氧化锌/硫化亚铁异质结乙醇气敏传感器的研究
- Author:
Ji-Jin SHI
1
;
Sen-Rong YE
;
Jin-Peng LUO
;
Chi ZHANG
;
Xin HE
;
Wei-Jia YANG
Author Information
1. 五邑大学应用物理与材料学院,江门 529020;江门市微纳功能材料与器件重点实验室,江门 529020
- Keywords:
Heterojunction;
Zinc oxide;
Ferrous sulfide;
Ethanol;
Gas-sensing
- From:
Chinese Journal of Analytical Chemistry
2025;53(3):375-386
- CountryChina
- Language:Chinese
-
Abstract:
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/m3 to 50 mg/m3.At the optimum operating temperature of 300℃,the response of ZnO/FeS nano heterojunction sensor to 50 mg/m3 ethanol was 15.6,the response time was 5.0 s,and the detection limit was as low as 0.101 mg/m3,which was obviously better than that of commercial ethanol sensor.This sensor was highly selective for ethanol compared to other gases such as CO,NH3,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.
