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The possibility of preparing and properties (surface morphology, microhardness, corrosion resistance) of nickel–zirconia composite coatings electrodeposited from nickel acetate solutions containing a dispersed phase in the form of a conventional polydisperse crystalline micropowder and a sol with nanoscale particles have been discussed. The effect of the particle size and concentration and the electrolysis conditions on the properties of the coatings has been determined.

Aspects of a technology for producing tubular corundum-based substrates for membranes are examined. The ratios of the components and the rheological properties of slip are determined. Experiments on the deposition of a selective layer on a substrate are performed. The composition and technology developed for fabricating blanks make it possible to create substrates with open channel porosity of the order of 42%, pore size no more than 1 μm, and ultimate strength in bending 20 MPa.

Flat membrane contactors comprising ceramic disk microfiltration membranes with a deposited layer of Co3O4 are obtained. The characteristics, such as the thickness of the layer and the pore-size distribution, are determined and the specific surface of the substrate and the deposited layer of Co3O4 are determined. It is shown that the membrane contactors obtained are suitable for liquid-phase catalytic oxidation of phenols under soft conditions, including in waste waters.

The formation of aggregatively stable copper dispersions by the reduction of copper salts with thiourea dioxide or sodium hydroxymethane sulfinate in a water-organic solvent is studied. X-ray electron spectroscopy and photon correlation spectroscopy showed that the chemically formed copper exists as nano-sized particles.