Ab Initio Study of SOF and SOF Adsorption on Co-MoS.

The detection of partial discharge by analyzing the decomposition components of SF gas in gas-insulated switchgears plays an important role in the diagnosis and assessment of the operational state of power equipment. Recently, the application of transition metal-modified MoS monolayer dioxide in gas detection has received wide attention. In this paper, first-principle density functional theory calculations were adopted to study the gas-sensitive response of Co-MoS monolayer to SOF and SOF. It is found that the conductivity of the Co-MoS monolayer has been effectively enhanced after Co atom doping on the MoS monolayer. After gas adsorption, electrons transfer from the Co-MoS monolayer to the gas molecules, resulting in significant reduction of conductivity of the adsorption system. The calculation results reveal that the Co-MoS monolayer is sensitive and selective to SOF and SOF gases. This study provides the theoretical possibility of using Co-MoS as a gas sensor for SOF and SOF gas detection.