Zhihua Zhao , Zhikun Wang , Chunhua Zheng , Guixin Jin , Xiaoqing Shen , Lan Wu
{"title":"VTe2 nanospheres for NO2 gas sensors","authors":"Zhihua Zhao , Zhikun Wang , Chunhua Zheng , Guixin Jin , Xiaoqing Shen , Lan Wu","doi":"10.1016/j.sna.2024.115935","DOIUrl":null,"url":null,"abstract":"<div><div>Nitrogen dioxide is a toxic gas to the human body, which is the cause of acid rain and respiratory diseases. In this study, VTe<sub>2</sub> was first created for use in gas sensors by hydrothermal synthesis. After examining the gas-sensitive characteristics, it was found that the VTe<sub>2</sub> gas sensor responds 105 % to 50 ppm nitrogen dioxide (NO<sub>2</sub>) gas at 140°C and 40 % relative humidity (RH), with a relative humidity setting temperature of 25°C. Furthermore, the sensor has fast response recovery time, good selectivity, repeatability, stability and moisture resistance. Finally, a sensing mechanism for NO<sub>2</sub> detection was suggested.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"379 ","pages":"Article 115935"},"PeriodicalIF":4.1000,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sensors and Actuators A-physical","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0924424724009294","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Nitrogen dioxide is a toxic gas to the human body, which is the cause of acid rain and respiratory diseases. In this study, VTe2 was first created for use in gas sensors by hydrothermal synthesis. After examining the gas-sensitive characteristics, it was found that the VTe2 gas sensor responds 105 % to 50 ppm nitrogen dioxide (NO2) gas at 140°C and 40 % relative humidity (RH), with a relative humidity setting temperature of 25°C. Furthermore, the sensor has fast response recovery time, good selectivity, repeatability, stability and moisture resistance. Finally, a sensing mechanism for NO2 detection was suggested.
期刊介绍:
Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas:
• Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results.
• Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon.
• Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays.
• Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers.
Etc...