Room temperature NO₂ gas sensor based on F-SWCNTs/nickel nanoparticles

Due to their potential applications in many fields, such as sensors and nanometer-sized semiconductors, carbon nanotubes have been extensively studied. This article reviews contemporary techniques for externally decorating Functionalized single walled carbon nanotubes (F-SWCNTs) with elemental metal nanoparticles devices using drop casting method for sensing application. Due to their superior sensing qualities, including high selectivity and rapid response, carbon nanotube-based sensors have garnered a lot of attention in recent years. The F-SWCNTs gas sensor shows high sensitivity (23 %) at RT, while F-SWCNTs/NiNPs gas sensor shows better sensitivity (27 %) at RT. In this research an AFM and SEM test was made. Finally, the paper explains the issues with the Carbon Nanotubes-based gas sensors that are currently on the market, their corresponding corrective measures, and some potential areas for future research.