INVESTIGATION OF A GAS LAYER FORMATION ON THE SURFACE OF THE ZnO AND Co_{3}O_{4} SEMICONDUCTOR NANOPARTICLES

Abstract

Stages of the formation of adsorption gas layers on the surface of nanoparticles are determined. Process of the adsorption of gas molecules to the surface of nanoparticles is described using the diffusion equation. Expressions are obtained for dependences of the thickness and the rate of formation of the adsorption gas layer on time, the concentration and type of ambient gas, and the size of nanoparticles. The gas mass accumulated at the nanoparticle surface and the accumulation rate are calculated. From values of the adsorption layer thickness and the accumulated gas mass, the number and structure of layers are determined.