Gamma radiation mediated catalytic process for hydrogen generation by water decomposition on NaNO₃ surface

Abstract

The constituent parts of systems where radiation-catalytic processes occur usually differ in terms of mass and electron density, structural characteristics, electro-physical and chemical properties. Therefore, interaction between phases in any form has a sharp effect on the direction and parameters of the processes in individual components. The resulting X-ray diffraction pattern was mainly determined by the atomic plane (ε), the intensity of the obtained peaks, the corresponding syngony of the sample, the lattice size, density, lattice constants, and the distance between the phase groups. The X-ray diffraction data were processed using the Full prof program. Full-profile processing of NaNO₃ X-ray diffraction data showed that the initial sample has a triclinic structure. The scientific component of the article is of interest be- cause it touches upon the issues of structural transformations of NaNO₃ under the action of gamma radiation. The radiation- heterogeneous processes of water decomposition NaNO₃ have been studied. The kinetics of buildup of molecular hydrogen in the radiolysis processes of water decomposition has been examined. Hydrogen generation by water splitting is reported in NaNO₃ + H₂O_abs., NaNO₃ + H₂O_flu. systems using gamma radiation and 300 K temperature. This indicates that in the case of finding NaNO₃ in the volume of water, there is an effective transfer of energy from the solid phase to water molecules. The presence of the second slow stage of radiolysis on the kinetic curves indicates that there is a diffusion-hindered stage of heterogeneous radiolysis of water in the presence of nanoparticles at 300 K.