The study of new macro- and nanostructured functional materials of different physical and chemical natures

Work number - M 50 ALLOWED TO PARTICIPATE

Presented by the National University of Water and Environmental Engineering

Authors: Moroz M.V., Hud V.M., Rudyk B.P.

The aim of this workis scientifically based developing of the technological regimes of synthesis of new macro- and nanostructured materials by identifying their phase diagrams, thermodynamic, electro and sorption properties.

Scientific noveltylies in the creation and development of:

- new technology of controlled synthesis of superionic alloys;

- device for electrolytic synthesis of nanoparticles of oxides and sulfides of A²B⁶;

- new nanoporous membranes based on modified polymers.

The scientific significance of this work: the values of the thermodynamic functions of superionic alloys have been first determined. Based on this information, synthesis regimes of new macro and nanostructured materials with predetermined properties were proposed. The transport properties of hydrophobic polymers have been measured by the dielectric spectroscopy method. Superionic Ag₂GeS₃, Ag₃GeS₃Br(I) glasses were tested and used for the first time as an ion selective membranes in electrochemical cells.It was found that these glasses offer a number of advantages, compared to liquid electrolytes and they are thermodynamically stable near room temperature.

The practical significance and economic efficiencyassociated with the possibility of the creation and application as a new isolator materials for high-voltage electric power lines operated in conditionsofhigh humidity, to build sensor active elements for determining the composition of substances, to design a new generation coating for electrostatic separators, to design highly efficient fuel cell for alternative supply sources. Cost-effective technology of synthesis macro- and nano-sized materials is developed. It is shown thatinfluence of sorbet moisture on the conductivity of nanostructures polystyrene is changed to 5 decimal orders at frequency of 1 kHz. Linear dependence of the conductivity logarithm of the water vapor activity of the material indicates the ways to practical use as an active element of humidity sensors.

Number of publications: 101, including 42 articles (31 – in foreign journals). According to the SCOPUS database the total number of author’s citation is 38, total h-index is equals 6. Novelty and competitive technical solutions are protected by 8 patents.

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