Formation and morphology of nickel foam–complex oxide coatings with the perovskite structure

Abstract

The methods of X-ray diffraction (XRD) and scanning electron microscopy (SEM) are applied to study the processes of the formation, phase composition, morphology of particles, and phase distribution in composite layers of a nanostructured catalyst system consisting of highly porous cellular metal (nickel foam), an intermediate layer, and a complex oxide coating. The optimal conditions are selected for the formation of an intermediate layer of NiO and a catalytic coating of La0.75Me0.25MnO3 (Me = Ag, Cs, or Sr). Complex oxides are synthesized by the pyrolysis of polymer–salt compositions. The chemical composition of the coatings is monitored using inductively coupled plasma spectrometry; the specific surface area of samples is measured by low-temperature nitrogen adsorption.