期刊
MICROCHIMICA ACTA
卷 187, 期 4, 页码 -出版社
SPRINGER WIEN
DOI: 10.1007/s00604-020-4182-2
关键词
Vanadium oxide; Oxidising gases; Reducing gases; Inert gas sensor; Chemiresistive technique; Sensing mechanism; Flexible sensors
资金
- UGC-DAE-CRS [CSR- KN/CRS-83/2017- 18/1124] Funding Source: Medline
This review (with 200 references) summarises the state of the art of gas and vapour sensors based on the use of vanadium oxide (VOx; with V occurring in various valencies) nanostructures. Following an introduction that covers the discussion of VOx and their stable forms, the first large section covers experimental techniques employed for preparing VOx nanostructures, with methods such as precipitation, hydrothermal synthesis, electrospinning, polyol techniques, laser deposition, and magnetron sputtering. The next section deals with VOx-based sensors for oxidising gases such as nitrogen dioxide, carbon dioxide, oxygen, and ozone. We then discuss sensors for reducing gases and vapour, such as various alcohols, formaldehyde, hydrogen, methane, various amines, hydrogen sulphide, LPG, and neutral gases and vapours such as helium and humidity. An overview of the wealth of materials, methods, and sensing characteristics such as sensor response, analytical ranges, and operational temperatures is presented in Tables. The final section briefs the VOx-based flexible sensors, followed by a concluding section that summarises the current status and challenges, and gives an outlook on potential future perspectives. The state of the art of vanadium oxide nanostructures in gas/vapour sensing has been discussed in this work.
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