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Chuiko Institute of Surface Chemistry

National Academy of Sciences of Ukraine
(official site)

Laboratory of Oxide Nanocomposites

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Head of Laboratory

Borysenko Mykola V.

PhD in Chemistry, Senior Researcher

 

Telephone: + 380 44 422-96-72

Fax: +380 44 424-35-67

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 

Laboratory staff is 7 co-workers including 6 PhDs. From 1986, the Laboratory researchers have published more than 200 scientific papers, obtained 15 patents for inventions, and 8 candidate dissertations were defended.

 

Directions of investigations

Chemical reactions of disperse silica with chlorides, oxochlorides, and acetylacetonates of transition and rear-earth metals; synthesis of oxide nanoparticles and layers of Zr, Ti, Cr, Ni, Co, Fe, Cu, Ce, Eu and other metals on surfaces of silica matrices; phase and dimensional transformations of a deposited metal oxide phase on silica surface during the course of processes of synthesis, hydrolysis, and calcination; sol-gel method for producing doped silica glass and nanocomposites; spectral properties of glass and glass-ceramic systems doped with transition and rear-earth metals.

 

Main results for the recent years

Nanodimensional clusters (from 5 to 50 nm) of chromium oxide on silica surface have been synthesised and a novel variant of the sol-gel method for synthesising silica glass and glass ceramics (vitroceramics) has been designed. The sol-gel glass that is produced using chromia-modified aerosils is distinguished for a high optical homogeneity and increased refractive index in comparison to ordinary silica glasses.

By techniques of IR spectroscopy and X-diffraction analysis a study has been made of chemisorption of zirconium tetrachloride on fumed silica from a gas phase. Zirconium tetrachloride reacts with ºSiOH groups on the silica surface by the mechanism of the electrophilic substitution of proton, which results in formation of grafted –ZrCl3 groups. At the temperature of sublimation of ZrCl4 the degree of transformation amounts to 90%. Bonds SiO-Zr are hydrolytically stable and undergo destruction in water vapors at a temperature above 400 °C. Stage-by-stage modification (chemisorption of ZrCl4, hydrolysis, dehydration) leads to formation of ZrO2 phase. The zirconia formed on the surface has tetragonal modification. The ZrO2 crystallite size increases in proportion to number of deposited layers (1-4) from 46 to 109 in the direction of {101} face, with the concentration of zirconia increasing from 2.0 to 6.8 wt %. Application of pyridine gives evidence for the presence of Brönsted and Lewis acid sites.

By techniques of IR spectroscopy, thermal gravimetry, and mass-spectrometry a research has been carried out into influence of oxides of titanium and vanadium used for modification of the fumed silica surface on the process of chemisorption of hexamethyldisilazan. It has been shown that a deposited metal oxide phase exerts a slight effect on activation energy of the reaction between hexamethyldisilazan and silanol groups of silica. However, the phase makes a substantial influence on thermal destruction of grafted trimethylsilyl groups. Oxides of vanadium and titanium have been shown to increase thermal stability of grafted groups in an oxidising atmosphere and to decrease substantially this stability in vacuum.

Further, it has been shown that polydimethylsiloxane (PDMS) (5-40 wt %) adsorbed on surface of silicas modified with oxides of metals (Al, Sn, Zn, Cr, V) imparts high hydrophobic properties to them in the temperature interval 100-420 °C. The presence of titania on silica surface enhances the thermal stability of a hydrophobic coating (with a PDMS content of 20-40 wt %) at temperatures up to 520 °C.

We have also managed to synthesise catalysts with isolated vanadia groups and nanoclusters of vanadia on fumed silica surface. The catalysts are distinguished for their high catalytic activity and hundred-per-cent selectivity with respect to formaldehyde during the course of conversion of methane.

 

Laboratory staff

Borysenko Mykola V., PhD, Head of Laboratory,

tel.: +38 (044) 4229672; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Bogatyrov Viktor M., PhD, Senior Researcher,

tel.: +38 (044) 4229672; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. , This email address is being protected from spambots. You need JavaScript enabled to view it.

Galaburda Mariya V., PhD, Research Associate,

tel.: +38 (044) 4229672; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Gornikov Yuri I., leading engineer,

tel.: +38 (044) 4249470; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Oranska Olena I., PhD, Senior Researcher,

tel.: +38 (044) 4249470; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Sulym Iryna Ya., PD, Senior Researcher,

tel.: +38 (044) 4229672; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Cherniavska Tetiana V., PhD, Research Associate,

tel.: +38 (044) 4249455; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 

Recent publications

1. V.M. Gun’ko, I.Y. Sulym, M.V. Borysenko, V.V. Turov. Interfacial behavior of water bound to zirconia/nanosilica with adsorbed poly(dimethylsiloxane) // Colloids Surf. A: Physicochem. Eng. Aspects. – 2013. – V. 426. – P. 47–54.

2. L.I. Borysenko, H.H. Mnischenko, M.V. Borysenko, M.T. Kartel’, L.V. Zheleznyi, Y.A. Liubinin. Non-fluid oil // Patent of Ukraine. – № 99227. – 25.07.2012 (in Ukrainian).

3. I.Y. Sulym, M.V. Borysenko, O.V. Goncharuk, K. Terpilowski, D. Sternik, E. Chibowski, V.M. Gun’ko. Structural and hydrophobic–hydrophilic properties of nanosilica/zirconia alone and with adsorbed PDMS // Appl. Surf. Sci. – 2011. – V. 258, N1. – P. 270–277.

4. M.V. Borysenko, G.R. Webster, S. Tyebjee, T.V. Cherniavska, A.G. Dyachenko, Yu. Gnatiuk, P. Kamarchik, L. Maksimovic, Yi.J. Warburton, S.M. Mohnot. Multi-phase particulates, method of making, and composition containing same // US Patent Application. – US2010/0261029 A1. – Pub. Date: 14.10.2010.

5. L.I. Borysenko, G.G. Mnischenko, K.S. Kulyk, L.V. Petrus, I.Yа. Sulim, M.V. Borysenko. Silica, titania, zirconia and ceria nanocomposites – greases thickener // Chem. Phys. Technol. Surf. – 2010. – V. 1, N 1, – P. 111–116 (in Russian).

6. I.Y. Sulim, M.V. Borysenko, O.M. Korduban, V.M. Gun’ko. Influence of silica matrix morphology on characteristics of grafted nanozirconia // Appl. Surf. Sci. – 2009. – V. 255, N 17. – P.7818–7824.

7. V.M. Gun’ko, M.V. Borysenko, P. Pissis, A. Spanoudaki, N. Shinyashiki, I.Y. Sulym, T.V. Kulik, B.B. Palyanytsya. Polydimethylsiloxane at the interfaces of fumed silica and zirconia/fumed silica// Appl. Surf. Sci. – 2007. – V. 253. – P. 7143–7156.

8. M.V. Borysenko, M.V. Ignatovich, P. Baranui, T. Vidoczy, V. M. Bogatyrov, E.N. Poddenezhny, O.A. Stotskaya. Cu and Cr oxide nanoparticles in silica glass: preparation and spectral study // Nanosystems, Nanomaterials, Nanotechnologies. – 2006. – V. 4, N 1. – P. 137–143.