VO2 nanostructures based chemiresistors for low power energy consumption hydrogen sensing

Mott-type VO2 oxide nanobelts are demonstrated to be effective hydrogen gas sensors at room temperature. These nanobelts, synthesized by hydrothermal process and exhibiting the VO2 (A) crystallographic phase, display room temperature H2 sensitivity as low as 0.17 ppm. The nanobelts (ultralong belt-l...

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Bibliographic Details
Published in:International journal of hydrogen energy 2014-05, Vol.39 (15), p.8147-8157
Main Authors: Simo, Aline, Mwakikunga, Bonex, Sone, Bertrand T., Julies, Basil, Madjoe, Reginaldt, Maaza, Malik
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Applied sciences
Energy
Exact sciences and technology
Fuels
Hydrogen
Hydrogen gas sensing
Low power consumption
Mott type oxides
Size effects
Surface-interface
Vanadium dioxide nanobelts
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Summary:Mott-type VO2 oxide nanobelts are demonstrated to be effective hydrogen gas sensors at room temperature. These nanobelts, synthesized by hydrothermal process and exhibiting the VO2 (A) crystallographic phase, display room temperature H2 sensitivity as low as 0.17 ppm. The nanobelts (ultralong belt-like) nanostructures could be an ideal system for fully understanding dimensionally confined transport phenomena in functional oxides and for building functional devices based on individual nanobelts. •Highly c-axis oriented VO2 nanobelts were grown via hydrothermolysis using aqueous solutions.•The growth temperature is approximately 240 °C for two days.•VO2 nanobelts show high detection activity upon Hydrogen exposure.•We report for the first time a low power detection sensor with low cost manufacturing.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2014.03.037