Metal Oxide Nanowire-Based Sensor Array for Hydrogen Detection Article

Zappa, D, Kaur, N, Moumen, A et al. (2023). Metal Oxide Nanowire-Based Sensor Array for Hydrogen Detection . 14(11), 10.3390/mi14112124

cited authors

  • Zappa, D; Kaur, N; Moumen, A; Comini, E

authors

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.

publication date

  • November 1, 2023

Digital Object Identifier (DOI)

volume

  • 14

issue

  • 11