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- Title
Metal Oxide Nanowire-Based Sensor Array for Hydrogen Detection.
- Authors
Zappa, Dario; Kaur, Navpreet; Moumen, Abderrahim; Comini, Elisabetta
- Abstract
Accurate hydrogen leakage detection is a major requirement for the safe and widespread integration of this fuel in modern energy production devices, such as fuel cells. Quasi-1D nanowires of seven different metal oxides (CuO, WO3, Nb-added WO3, SnO2, ZnO, α-Bi2O3, NiO) were integrated into a conductometric sensor array to evaluate the hydrogen-sensing performances in the presence of interfering gaseous compounds, namely carbon monoxide, nitrogen dioxide, methane, acetone, and ethanol, at different operating temperatures (200–400 °C). Principal component analysis (PCA) was applied to data extracted from the array, demonstrating the ability to discriminate hydrogen over other interferent compounds. Moreover, a reduced array formed by only five sensors is proposed. This compact array may be easily implementable into artificial olfaction systems used in real hydrogen detection applications.
- Subjects
SENSOR arrays; HYDROGEN detectors; METALLIC oxides; HYDROGEN as fuel; ACETONE; PRINCIPAL components analysis; LEAK detection; CARBON monoxide
- Publication
Micromachines, 2023, Vol 14, Issue 11, p2124
- ISSN
2072-666X
- Publication type
Article
- DOI
10.3390/mi14112124