OICC Press Journal of Nanostructure in Chemistry 2193-8865 3 1 (December 2013) 2012 12 06 Simulation of SnO2/WO3 nanofilms for alcohol of gas sensor based on metal dioxides: MC and LD studies 10.1186/2193-8865-3-1 EN Leila Mahdavian Department of Chemistry, Islamic Azad University, Doroud Branch, Doroud, IR Journal Article 2012 12 06 Abstract This work presents a study of the adsorption properties of nanostructures. The moving gas technique was employed to determine the transient and steady-state response behavior of nanocrystalline gas sensors. SnO 2 sensors have shown high sensitivity to low concentrations of ethanol at moderate temperature. Tin dioxide is the most used material for gas sensing because its three-dimensional nanofilms and properties are related to the large surface exposed to gas adsorption. This study proposes the use of SnO 2 nanofilms in interaction with ethanol; we used different percentages of SnO 2 and WO 3 in the adsorption of ethanol by nanofilms. The total energy, potential energy, and kinetic energy were calculated for the interaction between nanofilms and ethanol at different concentrations and at 300 K. The calculations were achieved by Langevin dynamics and Monte Carlo simulation methods. The total energy decreased with additional tungsten percentage in the nanofilms and increased with additional number of ethanol molecules and interactions between them are endothermic.