Enhanced NH3 and H2 gas sensing with H2S gas interference using multilayer SnO2/Pt/WO3 nanofilms

Enhancement of NH3 gas sensing with Ag-Pt co-catalyst on SnO2 nanofilm towards medical diagnosis

“…The ratio between the two materials is therefore important as they form alloy, because it tunes the catalytic effect of the nanoparticles [21], improving the sensor performance. In our previous publication [29], the SnO2 film decorated with a 5 nm layer of Pt showed the highest response of 46.3 to 100 ppm NH3 at the working temperature of 250 °C. It is clear that the catalytic effect of the Ag-Pt nanoalloy significantly improved the sensing properties to NH3 compared to the single metals.…”

Emerging single atom catalysts in gas sensors

“…Pt is one of the extensively used noble metal materials in the field of gas sensors. 23,[116][117][118] The Pt catalyst has high activity and stability. Due to the size effect, the bonds between oxygen species and Pt atoms with specific size are relatively weak.…”

Pt Nanoparticle-Modified SnO2–ZnO Core–Shell Nanosheets on Microelectromechanical Systems for Enhanced H2S Detection

“…have excellent detection characteristics in the MEMS-based gas sensors. Among these materials, n-type tin oxide (SnO 2 ) has been intensively utilized for high-performance gas sensors due to its unique optical and electrical properties, superior sensing performance, low cost, and great stability. , Previous studies have revealed that the gas performance of SnO 2 is closely related to its morphology, including nanorods, nanosheets (NSs), nanowires, and nanoflowers . However, pristine SnO 2 gas sensors usually suffer from disadvantages such as poor response and selectivity. , Hence, metal doping, , constructing hybrid structures, and designing hierarchical structures with other SMOs , to improve sensing performance have attracted widespread attention.…”

“…Among these materials, n-type tin oxide (SnO 2 ) has been intensively utilized for high-performance gas sensors due to its unique optical and electrical properties, superior sensing performance, low cost, and great stability. 14,15 Previous studies have revealed that the gas performance of SnO 2 is closely related to its morphology, including nanorods, 16 nanosheets (NSs), 17 nanowires, 18 and nanoflowers. 19 However, pristine SnO 2 gas sensors usually suffer from disadvantages such as poor response and selectivity.…”