An effective H₂S sensor based on SnO₂ nanowires decorated with NiO nanoparticles by electron beam evaporation.

ABSTRACT: The highly toxic hydrogen sulphide (H₂S) present in air can cause negative effects on human health. Thus, monitoring of this gas is vital in gas leak alarms and security. Efforts have been devoted to the fabrication and enhancement of the H₂S-sensing performance of gas sensors. Herein, we used electron beam evaporation to decorate nickel oxide (NiO) nanoparticles on the surface of tin oxide (SnO₂) nanowires to enhance their H₂S gas-sensing performance. The synthesised NiO-SnO₂ materials were characterised by field-emission scanning electron microscopy, transmission electron microscopy and energy dispersive spectroscopy analysis. H₂S gas-sensing characteristics were measured at various concentrations (1-10 ppm) at 200-350 °C.

SUBMITTER: Ngoc Hoa TT 

PROVIDER: S-EPMC9063983 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature