Nanostructured surfaces

Features of surface topography of catalytic heteroxide nanocomposites
Sakhnenko M.D.1, Karakurkchi H.V.1, Yar-Mukhamedova G.Sh.2
1 National Technical University “Kharkiv Polytechnic Institute”, Kyrpychova Str. 2, Kharkiv-61002, Ukraine. 
E-mail: anyutikukr@gmail.com
2 Institute of Experimental and Theoretical Physics, Al-Farabi Kazakh National University, 050040, Al-Farabi av., 71, Almaty, Kazakhstan.

The modern trend of electrochemical materials science is plasma-electrolyte synthesis (PES) on the surface of metal carriers of thin-film materials with different functional properties. The variation of the formed heteroxide systems composition due to the incorporation into the oxide matrix of the target components allows to obtain materials with synergistic properties [1]. It is known that the qualitative, quantitative and phase composition, surface morphology depend on the composition of the electrolyte and the modes of PES [2]. These characteristics will affect the functional properties of the synthesized coatings. Therefore, the study of relationships «composition and structure of the material – functional properties» is the main element in determining and predicting the application area of the synthesized systems. The influence of PES modes on the morphology and surface topography of synthesized nanocomposites based on TiO2 with oxides of transition and refractory metals is investigated. It is shown that the studied nanocomposites are three-dimensional structures with a complex surface relief. The degree of development of the surface layer depends on the content of dopant. In addition, the obtained heteroxide systems have photocatalytic activity. It is promising to study the regularities of the targeted synthesis of functional materials based on metal oxide platforms for photo- and ecocatalysis [3].

1.	Yar-Mukhamedova G.Sh., Sakhnenko N.D., Ved' M.V. etc. Nano-composition Ti-Co (Mn) coatings investigation // 18th Int. Multidisc. Sc Geoconf. SGEM.-2018.-18, 6.1.-P. 307-314.
2.	Karakurkchi A.V., Sakhnenko N.D., Ved’ M.V. etc. Features of plasma electrolytic formation of manganese- and cobalt-containing composites on aluminum alloys // Adv. Mater. Sci. Engin- 2019.-2019. 6381291.
3.	Sakhnenko N.D., Karakurkchi A.V., Galak A.V. etc. Examining the formation and properties of TiO2 oxide coatings with metals of iron triad // East.-Europ. J Enterpr. Technol.-2017.-2/11 (86).-P. 4-10.