Hydrothermal synthesis of ZnO nanotubes for CO gas sensing

被引：0

作者：

Vijayakumar ^{[1
]}

Shivaraj B.W. ^{[1
]}

Manjunatha C. ^{[2
]}

Abhishek B. ^{[1
]}

Nagaraju G. ^{[3
]}

Panda P.K. ^{[4
]}

机构：

[1] Department of Mechanical Engineering, RV College of Engineering, Bengaluru

[2] Department of Chemistry, RV College of Engineering, Bengaluru

[3] Department of Chemistry, Siddaganga Institute of Technology, Tumakuru

[4] Materials Science Division, CSIR-National Aerospace Laboratories, Bengaluru

来源：

Sensors International | 2020年 / 1卷

关键词：

Air pollution; CO; Gas sensor; Hydrothermal; Nanostructures; ZnO;

D O I：

10.1016/j.sintl.2020.100018

中图分类号：

学科分类号：

摘要：

Carbon monoxide (CO) gas sensing response of hydrothermally synthesized hexagonal ZnO nanostructures was examined with respect to its morphologies. Synthesized ZnO nanostructures were characterized by X-Ray diffraction (XRD), Field Emission Scanning Electron Microscope (FE-SEM), Energy Dispersive X- Ray Analysis (EDAX) and UV Visible spectroscopic techniques. The CO gas sensing response of ZnO nanostructures were investigated as change in resistance at different gas concentrations of 2, 4, and 6 ppm at room temperature (25 °C). ZnO nanostructures have shown high response to CO concentrations as low as 6 ppm. Response 1.7 s, 2 s and 3 s and recovery time was 2 s, 3 s, 4 s, respectively, for 2, 4 and 6 ppm. Response of the CO gas for ZnO nanostructures at room temperature (25 °C) was 75%. © 2020 The Authors

引用

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