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Corrosion process of metal iron under the action of humic substances

Third International Conference of CIS IHSS on Humic Innovative Technologies, Tenth International Conference daRostim «Humic Substances and Other Biologically Active Compounds in Agriculture», HIT-daRostim-2014
Anuchina M.M., Pankratov D.A. Corrosion process of metal iron under the action of humic substances.
 /Abstracts of Third International Conference of CIS IHSS on Humic Innovative Technologies, Tenth International Conference daRostim «Humic Substances and Other Biologically Active Compounds in Agriculture», HIT-daRostim-2014, Moscow, Russia, 2014, p. 177
Технологии биотестирования в экологической оценке агроценозов и гуминовых веществ: Материалы международной молодежной школы. /под общ. ред. В.А.Тереховой, К.А. Кыдралиевой, МГУ 21-23 ноября 2014 г., Москва: Доброе слово, 216 стр. (с. 100 - Anuchina M.M., Pankratov D.A. Corrosion process of metal iron under the action of humic substances)

It is known that humic substances (HS) are actively involved in geochemical processes of metal transfer in soil and water ecosystems. Humic substances are involved in the formation and erosion of metal-containing minerals and ores. However, questions about mechanisms and kinetics of transfer of mineral-forming metals in soluble form, composition of these forms, mechanisms and conditions for formation of precipitations containing metal in nature, are not fully understood yet. In this paper we are proposing to examine some of these problems by example of iron, which is an important mineral-forming and biologically active metal. Iron is supposed to be included in humic compounds in chelate complexes form, and in highly hydrated oxohydroxo compounds form. Various functional groups present in HS composition can form compounds with iron and stabilize dispersed system. We believe that the same functional groups of HS could also be involved in chemical interaction with dissolved iron compounds contributing to its extraction from solution.

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Solid Platinum Superoxo Hydroxo Complex

EPR Spectra Of Green Solid Platinum Superoxo Hydroxo Species

Solid Platinum Superoxo Hydroxo Complex. Pankratov D.A., Komozin P.N., Kiselev Yu.M. //Russian Journal of Inorganic Chemistry. 2000. V. 45. № 10. P. 1555-1559

Solid samples isolated from solutions of a platinum superoxo hydroxo complex are studied by EPR and X-ray powder diffraction techniques. The short-lived superoxo complex is found to form upon dissolution of the solid samples in concentrated acids. Magnetic resonance parameters of the platinum superoxo complexes in the solid state and in acidic solutions are determined. The structures of the inner coordination sphere of the found superoxo complexes are discussed.

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Variation of Composition and Structure over the Height in Arrays of Vertically Aligned CNT

XII International Conference on Nanostructured Materials (NANO 2014)Makunin A.V., Bukunov K.A., Vorobyeva E.A., Pankratov D.A., Petrov D.V., Chechenin N.G. Variation of Composition and Structure over the Height in Arrays of Vertically Aligned CNT. /XII International Conference on Nanostructured Materials (NANO 2014), July 13-18, 2014 Moscow, Russia (2014), pp01.116


Arrays of vertically aligned multiwall carbon nanotubes (MWNT) were grown by the method of pyrolitic gas-phase deposition were studied by a number of techniques. Vibrational modes variations over the length (height) of CNTs with abnormal large aspect ratio of the order of 104 ÷ 105 were studied using the Raman scattering spectra. The results made it possible to estimate structure degree of disorder variation over the length of MWNTs indirectly. Microstructure and composition data were obtained using scanning electron microscopy (SEM) and X-ray dispersion analysis. The method of Mössbauer spectrometry was used to investigate the phases of iron present in MWNTs. Based on the experimental results, various iron phases distribution influence on the MWNTs growth mechanism was discussed.

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