TWO-COMPONENT COATINGS WITH A DEVELOPED SURFACE AND NANOSCALE STRUCTURE


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Abstract

In recent times, more attention is paid to the scientific development of catalysts intended for the solution of the environmental problems. First of all, it is associated with the fact that, every year, the essential increase of the environmental pollution is observed. The Huge ecological loss is caused by the wastewater dumped to reservoirs. One of the dangerous toxic pollutants of wastewater is the ethylene glycol, which is a part of the deicers applied at the airports.

The destructive technologies that include catalytic oxidation are considered the advanced methods of wastewater treatment from organic pollutants. The heterogeneous catalytic oxidation of organic pollutions of water requires the creation of the effective catalysts consisting of several components. 

In this paper, the authors proposed a technique for producing copperzinc coatings with a nanoscale structure and a different percentage content of their components. Using the electrodeposition method, the copper-zinc coatings of two types were produced. The scanning electronic microscopy, the X-ray spectral and X-ray phase analysis and the method of lowtemperature gas adsorption were used to study morphology, phase and element structure and the specific surface of copper-zinc coatings. It is shown that such coatings consist of copper crystals and zinc plates of nanoscale thickness and have high specific surface area. It is noted that the increase of zinc concentration in the coating causes the morphology change and expands the specific surface area. The paper presents the results of preliminary studies of the catalytic activity of the developed material when decomposing ethylene glycol in the presence of ozone/oxygen mixture, which even at this stage showed the level of purification of wastewater from ethylene glycol from 64 to 78 %.

About the authors

A. G. Denisova

Togliatti State University

Author for correspondence.
Email: aliona.denisova.tlt@gmail.com

postgraduate student of Chair “Nanotechnologies, material science and mechanics”

Russian Federation

A. A. Vikarchuk

Togliatti State University

Email: fti@tltsu.ru

Doctor of Sciences (Physics and Mathematics), Professor, Head of the Research and Development Department-3 “Nanocatalysts and functional materials”

Russian Federation

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