A comparative study of RGO-SnO2 and MWCNT-SnO2 nanocomposites based SO2 gas sensors

Advances in designs and mechanisms of semiconducting metal oxide nanostructures for high-precision gas sensors operated at room temperature

“…18,51 For further improvement of sensing performance, they have been modified using noble metals, [52][53][54][55] metal ions, [56][57][58][59][60] and carbon materials. [61][62][63][64] Composites of multi-phase SMONs [65][66][67] have also been frequently reported. SMON-based sensors are usually heated to a higher temperature (between 100 1C to 400 1C) for performance enhancement at the expense of structural complications.…”

Three-Dimensional Fe3O4@Reduced Graphene Oxide Heterojunctions for High-Performance Room-Temperature NO2 Sensors

“…Toxic gases in the environment pose a severe threat to human health, which has drawn increasing attention in the past few years. Therefore, the detection of toxic gases has become increasingly important (Tyagi et al, 2017;Zhang et al, 2018;Wang et al, 2019a,b). Among common toxic gases, nitrogen dioxide (NO 2 ) is a corrosive common toxic gas with physiological irritants, which mainly derives from automobile exhaust (Wetchakun et al, 2011).…”

Preparing SnO2/MWCNT Nanocomposite Catalysts via High Energy Ball Milling

“…For the efficient detection of SO 2 gas, MWCNT-SnO 2 and RGO-SnO 2 hybrid nanocomposite sensors were prepared by incorporating MWCNTs and RGO (reduced graphite oxide) into SnO 2 nanoparticle colloidal solution respectively by chemical route. 24 Pal et al 25 achieved high sensitivity, stability, ultrafast response toward sub-ppm acetone detection with a good resolution (i.e., promising material for diabetes sensor) just by using MWCNTs as a substrate for nanocrystalline SnO 2 prepared through a facile sol-gel technique. In our previous investigations, we successfully fabricated SnO 2 /MWCNT nanocomposite by the sol-gel method and their gas sensing properties were also studied.…”