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Chuiko Institute of Surface Chemistry

National Academy of Sciences of Ukraine
(official site)

Department of Chemical Design of Surface

 


Head of Department

Belyakova Lyudmila A.
Doctor of Sciences (Chemistry),

Professor

 

Telephone: + 38 (044) 424 94 57, 
     +38(044) 422 96 12

Fax: + 38 (044) 424 35 67

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

 

Department staff is 12 co-workers including 1 DSc, 5 PhDs. The Department includes Laboratory of  Nanochemistry of Functional Coatings (Head of Lab PhD Yu.V. Plyuto). From 1986, the Department researchers have published 1 book, 8 Chapters in 6 collective monographs, 265 scientific papers, and obtained 25 patents for invention; 1 doctor and 8 candidate dissertations were defended.

 

Directions of investigations

Study of the various sorption processes involving surface of highly disperse hydroxylated and modified silicas. Construction of sorption centers of ions and molecules in the surface layer of disperse silica for specific and selective functional materials.

 

Main results for the recent years

New chemical approaches for synthesis of various functional organosilicas have been proposed. There are: 1) activation of aminopropylsilica surface with high reactive halogen-containing organic compounds; 2) direct formation of bonds Si–C on the silica surface via hydrosilylation, high-temperature condensation or reduction reactions as well as reagents addition to siloxane bonds; 3) increase in the surface concentration of functional groups by bringing in chemical reactions not only silanol, and siloxane groups of silica; 4) use of new soft silylating reagents for effective endkepping of organosilicas; 5) design of adsorption and catalytic sites in the surface layer of silica by direct chemical assembly or matrix prints with sorption “memory”.

Chemical assembly of various tetraalkylhalogen groups in the surface layer of silica using quaternization, hydrosilylation or copolymerization reactions have been performed to obtain effective sorbents-sequestrants. It was found that adsorption of bile acids is not only on the mechanism of anion exchange, but also by the dispersion interactions between the hydrophobic parts of functional silica surface and bile acids molecules.

The methods for chemical immobilization of β-cyclodextrin and its derivatives on the surface of highly disperse silicas have been proposed. It was studied the interaction of cyclic oligosaccharides with benzene carboxylic acids in a solution and on the surface of β-cyclodextrin-containing silicas. It was proved the formation of supramolecular structures with a component ratio of 1:1. Conditions have been found for encapsulation of benzene carboxylic acids into β-cyclodextrin molecules and its separation in solid form. It was demonstrated the transition of benzene carboxylic acids into nano state with “dispersion” at the molecular level, the loss of individual crystalline structure and the increase of thermal stability.

The influence of the chemical nature of functional groups of attached β-cyclodextrin on sorption capacity of nanoporous organosilicas to ions of mercury, cadmium, zinc, lead, copper, chromium and arsenic has been studied. It was found that increase of adsorption of toxic metals nitrates by 2–3 orders is the result of super molecules formation on the surface of β-cyclodextrin-containing silicas. Their composition depends on the polarizability of cations and functional substituents of β-cyclodextrins.

Mesoporous silicas with an ordered hexagonal structure of cylindrical pores have been synthesized by sol-gel template method. A new approach for selective chemical modification of the outer surface of mesoporous silica nanoparticles with functional organic groups has been proposed. This method has been used in the design of pH-sensitive molecular nanovalves. It has been proved that the chemical decoration of entrances to the MCM-41 silica pores with amino-containing organic groups provides the controlled release of encapsulated biologically active substances when changing the pH of the aqueous medium.

The quantitative characteristics of vitamins, amino acids, biogenic amines, bilirubin, bile acids, antibiotics, and acridine derivatives adsorption on the surface of disperse amorphous silica have been determined. It was found that depending on the nature of organic molecules different types of interactions with silanol groups of the silica surface are observed. It is shown that the complex formation of some of studied molecules with metal ions significantly effects on adsorption processes.

It was found that the modification of silica surface with macrocyclic polyether dibenzo-18-crown-6 promotes adsorption of amino-containing biomolecules. The extraction degree of these compounds from the solution depends on the possibility of implementing of electrostatic and stacking interactions, and also hydrogen bonding between the functional groups of the sorbent and sorbate.

The proposed synthesis methods of activated carriers for immobilization of organic compounds and functional silica materials, sorbents for the concentration of radionuclides, heavy metal ions, silver, platinum and palladium, and chromatographic carriers for the separation of racemic mixtures of organic compounds, heterogeneous metal complex catalysts for the oxidation of aromatic compounds and methane under mild conditions, high hydrophobic silicas for special adsorption tasks, protective chemical coatings for oxides and non-alloy steels are patented in USSR, Ukraine, USA, South Africa, Europe and China.

 

Department staff

Belyakova Lyudmila A., DSc, Head of Department,

tel.: +38 (044) 4249457, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Dziazko Maryna O., leading engineer,

tel.: +38 (044) 4229691, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Lyashenko Diana Yu., PhD, Senior Researcher,

tel.: +38 (044) 4229611, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Markitan Olga V., PhD, Research Associate,

tel.: +38 (044) 4229668, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Vlasova Nataliya N., PhD, Senior Researcher,

tel.: +38 (044) 4229668, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Roik Nadiia V., PhD, Senior Researcher,

tel.: +38 (044) 4229691, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Shvets Oleksandra M., Junior Researcher,

tel.: +38 (044) 4229691, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Trofymchuk Iryna M., leading engineer,

tel.: +38 (044) 4229691, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 

Recent publications

1. N.V. Roik, L.A. Belyakova.  Mesoporous silica nanoparticles equipped with surface nanovalves for pH-controlled liberation of doxorubicin // Interface Focus, 2016. http://dx.doi.org/10.1098/rsfs.2016.0041

2. N.V. Roik, L.A. Belyakova. pH-Sensitive supramolecular assemblies of β-cyclodextrin and 2-aminodiphenylamine in water medium: structure, solubility and stability // J. Sol. Chem. – 2016. – V. 45, N 5. – P. 818–830.

3. I.M.Trofymchuk, N.V. Roik, L.A. Belyakova. Sol-gel synthesis of ordered β-cyclodextrin-containing silicas // Nanoscale Res. Let. – 2016. – V. 11, N 1. – P. 174–185.

4. N.V. Roik, L.A. Belyakova, M.O. Dziazko.  Adsorption of antitumor antibiotic doxorubicin on MCM-41-type silica surface // Adsorption Science and Technology, 2016.  DOI:10.1177/0263617416669504

5. Н.Н. Власова.  Адсорбция аминокислот на поверхности диоксида церия // Коллоидный журнал. – 2016. – Т.78, № 6. – С.700–706.

6. O. Shvets, L. Belyakova. Synthesis, characterization and sorption properties of silica modified with some derivatives of β-cyclodextrin // J. Hazardous Materials. – 2015. – V.283. – P.643–656.

7. N.V. Roik, L.A. Belyakova. Chemical design of outer surface of mesoporous silicas for controlled storage and release of aromatic amino acid // J. Solid State Chemistry. – 2014. – V.215. – P.284–291.

8. Н.Н. Власова, Л.П. Головкова, О.В. Маркитан, Н.Г. Стукалина. Тройные поверхностные комплексы в системах кремнезем – ионы никеля (2+) – 2,2 – дипиридил // Коллоидн. журнал. – 2014. – Т.76, № 3. – С. 311–318.

9. Л.А. Белякова, Д.Ю. Ляшенко, А.Н. Швец. Сорбция кадмия (II) из многокомпонентных нитратных растворов с помощью функциональных органокремнеземов // Химия и технология воды. – 2014. – Т.36, №2. – С.105–115.

10. Л.А. Белякова, Д.Ю. Ляшенко. Нанопористые функциональные органокремнеземы для сорбции токсичных ионов // Журн. физ. химии. – 2014. – Т.88, №3. – С.480–484.

11. N.V. Roik, L.A. Belyakova. Sol-gel synthesis of MCM-41 silicas and selective vapor-phase modification of their surface // J. Solid State Chemistry. – 2013. – V.207. – P.194–202.

12. L.A. Belyakova, D.Yu. Lyashenko, O.M. Shvets. Functional β-cyclodextrins as the active centres on the silica surface for toxic ions sorption // Укр. хим. журнал. – 2013. – Т.79, №11. – С.50–62.

13. Л.А. Белякова, Д.Ю. Ляшенко. Сорбция цинка (II) нанопористыми β‑циклодекстринсодержащими органокремнеземами // Химия, физика и технология поверхности. – 2012. – T.3, №3. – C.227–236.

14. N.V. Roik, L.A. Belyakova. Thermodynamic, IR spectral and X-ray diffraction studies of “β-cyclodextrin – para-aminobenzoic acid” inclusion complex // J. Incl. Phenom. Macrocyclic Chem. – 2011. – V.69, N3–4. – P.315–319.

15. I.M. Trofymchuk, L.A. Belyakova, A.G. Grebenyuk. Study of complex formation between β-cyclodextrin and benzene // J. Incl. Phenom. Macrocyclic Chem. – 2011. – V.69, N3–4. – P.371–375.