Surface assimilation studies of ethyl methyl sulfide on gamma phosphorene sheets – a DFT outlook

Abstract

The motive of this present research is to examine the vapour sensing abilities of gamma phosphorene towards ethyl methyl sulfide. In this current work, the investigation on surface assimilation of ethyl methyl sulfide (EMS) over the gamma phosphorene nanosheet (GPHNS) has been carried out by exploiting the method of density functional theory (DFT). The GPHNS is discerned to have semiconducting nature and it is validated from band structure. However, the major factors holding up the adsorption properties such as energies of adsorption, Bader charge transfer along with energy gap variation have been studied in the base material GPHNS before and after adsorbing EMS. The electron densities are also studied in diversifying the variations after adsorption of EMS on GPHNS. The PDOS (projected density of states) spectrum of GPHNS upon adsorption of EMS supports the hybridisation of orbitals between GPHNS and target vapour EMS. Furthermore, the comprehensive results disclose the physisorption of EMS vapour molecules on GPHNS.