Publications on the project |
061 Catalytic activity of nanosized ferrospinels cobalt and copper in phospholipid model system |
Authors: | Dolinsky G.A., Lavrynenko E.N., Todor I.N., Luk'yanova N.Yu., Prokopenko V.A., Chekhun V.F. | |
Summary: | The catalytic properties of nanosized ferrospinels CuFeO4 and CoFeO4. which had been formed on the steel surfaces upon galvanostatic conditions, were studied. Tlieir ability to initiate and keep free radical oxidation in model phosphorus lipid system was showed that could be applicable for novel diagnostic and target therapy agents developing, anticancer drugs in particular. | |
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Edition: | | | | 2010,
С. 59-68,Russian |
061 The biological activity of nanoscale ferromagnetic structures CoFe2О4 and CuFe2О4 for free radical oxidation of lipids |
Authors: | Donchenko G.V., Lavrynenko E.M., Prokopenko V.A., Todor I.M., Palyvoda O.M., Dubovetsky A.S., Filippovich V.P., Kuz'menko O.I. | |
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Edition: | | | | 2010,
,Ukrainian |
061 The influence of the pH value and the cation composition of dispersion medium on the formation of iron-oxygen structures on steel surface |
Authors: | O.M. Lavrynenko, S.V. Netreba, V.A. Prokopenko, Ya.D. Korol | |
Summary: | The peculiarities of the formation of iron-oxygen structures on steel surface due to its contact with aqueous dispersion medium within a wide range of pH values and in presence of cobalt and silver have been studied by X-ray diffraction in situ. It has been shown that well crystallized cobalt- and iron-containing spinel ferrites are formed at neutral pH value of aqueous medium. The contact of steel surface with alkaline medium results in formation of weakly crystallized iron oxyhydroxides. The structure of lepidocrocite is formed on steel surface due to its contact with acid dispersion medium in absence of metal ions such as cobalt and silver. | |
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Edition: | | | | 2011,
93-100,English |
061 Education perigee biogenic and chemical origin interaction i biocomposites based with gold nanoparticles |
Authors: | O.M. Lavrynenko, I.I. Volobaev, V.A. Prokopenko | |
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Edition: | | | | 2013,
139-147,Ukrainian |
061 The influence of the average magnetic field on the formation of dispersed ferrum-oxygenating mineral phases by rotational-corrosion dispersion |
Authors: | O.M. Lavrynenko, O.Yu. Pavlenko | |
Summary: | The purpose of this work was to investigate the process of the disperse iron-oxygen mineral phase formation by applying the rotation-corrosion dispergation method when the middle magnetic field affected the system. The rotation-corrosion dispergation method is based on the principle of iron (steel) electrode corrosion when its surface contacts either with air or dispersion medium. The constant magnetic field was influencing the system during the process of the phase formation. The magnetic field intensity was 0,6—1,9 kOe and remanent magnetic induction was 0,7—1,3 T. As the dispersion medium distilled water, CoCl2 and ZnCl2 solutions were chosen. We used X-ray diffraction, X-ray fluorescence spectroscopy and transmission electron microscopy as the main methods of the investigation. The iron spinel ferrite particles formed on the steel surface have a spherical form; their development takes place according to the contact-recrystallization mechanism. The magnetic interaction between particles increased when magnetic field influenced the system. Under such conditions the ferromagnetic particles formed big aggregates and they did not separate from the electrode surface. The paramagnetic lepidocrocite particles were formed in near electrode film according to solution-reprecipitation mechanism and weak crystallized ferrihydrite, Fe(II)-Fe(III) LDH and goethite particles coagulated and precipitated in the form of a fluffy sediment. It was found that the imposition of the middle magnetic field leads to the formation of monomineral disperse phases of iron oxyhydroxides, iron oxides and iron spinel ferrites. The obtained iron-oxygen particles can be used for creating different organosols that are suitable for biomedical investigation. | |
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Edition: | | | | 2014,
127-135,Ukrainian |
The events in the framework of the project |
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061 2.4. Colloidal nanoscale systems Purpose:To generalize the influence of the physicochemical factors on the formation of ferrous oxides and metal phases that allows creating of the principles for the regulation the processes of the nanophases formation on the metal electrode surface. Expected results:Issue of new types of products: methods, theories Stage 1:Analytical research of modern methods for the obtaining of ferrous oxide nanosized phases and monoporous metals Stage 2:The study of the role of oxygen concentration and pH values on the generation and formation of nanosized ferrous oxide phases in the system Fe0-H2O-O2. To study the role of components that are present in the composition of the initial system on the process of the formation of the monoporous metal structures. Stage 3:The determination the influence of the electrode potential and the composition of the dispersion medium on the nanoscale ferrous oxide phase generation and transformation. Stage 4:The study of the magnetic field influence on the qualitative composition and crystalline structure ferrous oxide phases formed in the system Fe0-H2O-O2. Research of the physical field influence on the formation of nanoporous metal structures Stage 5:Creation of the physicochemical principles of control of the processes of nanophases formation on the metal electrode surface
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