Investigation of Layered Mos2 Nanostructures for Room Temperature No2 Gas Sensing Application

Abstract

Nitrogen dioxide is one of the most prominent hazardous gases produced as a byproduct of chemical industries and transportation. According to the United States Environmental Production Agency, the short-term exposure limit for NO2 gas should be less than 5 ppm. In this regard, fabricating a room temperature NO2 sensor with rapid detection, prompt response and recovery kinetics with more stability is still ambitious for real-time application. So far, various semiconducting materials have been reported for the detection of NO2 gas molecules. In this thesis, we made an attempt to study and improve the performance of the MoS2-based sensor via incorporating different metal ions and integrating the carbon-based materials for an excellent room temperature NO2 sensor. newlineInitially, MoS2 and various concentrations of cobalt-incorporated MoS2 were synthesized using the hydrothermal route. The cobalt ion incorporation in MoS2 was ensured by structural and morphological analyses. The selectivity results corroborate the selective performance of NO2 in ambient environment newline