najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2015-6-4-593-604najo-1064Research ArticleREGULAR PAPERSREGULAR PAPERSNanodisperse oxide compounds of iron formed in the FeSO4 – KOH – H2O – H2O2 system (4.0 ≤ pH ≤ 13.0)Nanodisperse oxide compounds of iron formed in the FeSO4 – KOH – H2O – H2O2 system (4.0 ≤ pH ≤ 13.0)ZherebtsovD. A.ZherebtsovD. A.

Chelyabinsk

Chelyabinsk

zherebtsov_da@yahoo.comMirasovV. Sh.MirasovV. Sh.

Chelyabinsk

Chelyabinsk

mirasov@gmail.comKleschevD. G.KleschevD. G.

Chelyabinsk

Chelyabinsk

dgk1950dgk@mail.ruPolyakovE. V.PolyakovE. V.

Ekaterinburg

Ekaterinburg

rupolyakov@ihim.uran.ruSouth Ural State University (National research university)Russian FederationInstitute of Solid State Chemistry of the Ural Branch of the Russian Academy of SciencesRussian Federation20151608202564593604Copyright © Zherebtsov D.A., Mirasov V.S., Kleschev D.G., Polyakov E.V., 20252025Zherebtsov D.A., Mirasov V.S., Kleschev D.G., Polyakov E.V.Zherebtsov D.A., Mirasov V.S., Kleschev D.G., Polyakov E.V.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/1064

The regularities of phase formation during oxidation of aqueous solutions of FeSO4 and (or) suspensions of Fe(OH)2 at quasi-constant temperature and pH values have been studied for wide intervals of temperature (20 – 85 ◦C) and (4.0 – 13.0) of the reaction medium. The produced nanodisperse materials have been examined by X-ray phase analysis, IR spectroscopy, scanning electron microscopy and X-ray fluorescence analysis, as well as by thermogravimetric analysis combined with thermal analysis and mass spectrometric analysis of released gases. The dependences of the phase, chemical and disperse compositions of the formed precipitates on the synthesis parameters have been revealed.

FeSO4 solutionsFeOH2 suspensionshydrogen peroxide oxidationoxide compounds of iron(III)ReferencesBharat B. Handbook of Nanotechnology. Springer-Verlag Heidelberg, Berlin, 2010, 1961 p.Bharat B. Handbook of Nanotechnology. Springer-Verlag Heidelberg, Berlin, 2010, 1961 p.Cornell R.M. Schwertmann U. The iron oxides. Structure, properties, reactions, occurrences and uses. WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2003, 694 p.Cornell R.M. Schwertmann U. The iron oxides. Structure, properties, reactions, occurrences and uses. WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2003, 694 p.Kleschev D.G., Sheinkman .I., Pletnev R.N. The effect of medium on the phase and chemical transformations in disperse systems. UrO AN SSSR, Sverdlovsk, 1990, 248 p. in RussianKleschev D.G., Sheinkman .I., Pletnev R.N. The effect of medium on the phase and chemical transformations in disperse systems. UrO AN SSSR, Sverdlovsk, 1990, 248 p. in RussianPolyakov E.V., Krasilnikov V.N., et al. Synthesis and photocatalytic activity of quasi-one-dimensional (1-D) solid solutions Ti1−xMxO2−2x/2 (M(III)= Fe(III), Ce(III), Er(III), Tb(III), Eu(III), Nd(III and Sm(III), 0 ≤ x ≤ 0.1)). Nanosystems: physics, chemistry, mathematics, 2014, 5 (4), P. 553–563.Polyakov E.V., Krasilnikov V.N., et al. Synthesis and photocatalytic activity of quasi-one-dimensional (1-D) solid solutions Ti1−xMxO2−2x/2 (M(III)= Fe(III), Ce(III), Er(III), Tb(III), Eu(III), Nd(III and Sm(III), 0 ≤ x ≤ 0.1)). Nanosystems: physics, chemistry, mathematics, 2014, 5 (4), P. 553–563.Mallikarjuna N.N., Manohar S.K., et al. Novel high dielectric constant nanocomposites of polyaniline dispersed with γ-Fe2O3 nanoparticles. J. Appl. Polym. Sci., 2005, 97 (5), P. 1868–1874.Mallikarjuna N.N., Manohar S.K., et al. Novel high dielectric constant nanocomposites of polyaniline dispersed with γ-Fe2O3 nanoparticles. J. Appl. Polym. Sci., 2005, 97 (5), P. 1868–1874.Feitknecht W. Uber die Oxydation von festen Hydroxyverbindungen des Eisens in wabbrigen Losungen. Zs. Elektrochem, 1959, 63 (1), P. 34–43.Feitknecht W. Uber die Oxydation von festen Hydroxyverbindungen des Eisens in wabbrigen Losungen. Zs. Elektrochem, 1959, 63 (1), P. 34–43.Kijama M. Conditions for the formation of Fe3O4 by the air oxidation of Fe(OH)2 suspensions. Bull. Chem. Soc. Japan., 1974, 47 (7), P. 1646–1650.Kijama M. Conditions for the formation of Fe3O4 by the air oxidation of Fe(OH)2 suspensions. Bull. Chem. Soc. Japan., 1974, 47 (7), P. 1646–1650.Misawa T., Hashimoto K., Shimodaria S. The mechanism of formation of iron oxides and oxihydroxides in aqueous solutions at room temperatures. Crrsion Sci., 1974, 4 (2), P. 131–149.Misawa T., Hashimoto K., Shimodaria S. The mechanism of formation of iron oxides and oxihydroxides in aqueous solutions at room temperatures. Crrsion Sci., 1974, 4 (2), P. 131–149.Datta N.C. Chemistry of iron(III) oxides and oxyhydroxide. J. Sci. Industr. Res., 1981, 40 (9), P. 571–583.Datta N.C. Chemistry of iron(III) oxides and oxyhydroxide. J. Sci. Industr. Res., 1981, 40 (9), P. 571–583.Kijama M., Takada T. Iron compounds formed by the aerial oxidation of ferrous salt solutions. Bull. Chem. Soc. Japan., 1972, 45 (10), P. 1923–1924.Kijama M., Takada T. Iron compounds formed by the aerial oxidation of ferrous salt solutions. Bull. Chem. Soc. Japan., 1972, 45 (10), P. 1923–1924.Tolchev A.V., Kleschev D.G., Bagautdinova R.R., Pervushin V.Yu. Temperature and pH effect on composition precipitate formed in FeSO4 – H2O – H+/OH− – H2O2 system. Mat. Chem. Phys., 2002, 74 (1), P. 336–339.Tolchev A.V., Kleschev D.G., Bagautdinova R.R., Pervushin V.Yu. Temperature and pH effect on composition precipitate formed in FeSO4 – H2O – H+/OH− – H2O2 system. Mat. Chem. Phys., 2002, 74 (1), P. 336–339.Inouye K. What is Iron Oxyhydroxide. Kagaku to Kogyo, 1974, 27 (8), P. 571–578.Inouye K. What is Iron Oxyhydroxide. Kagaku to Kogyo, 1974, 27 (8), P. 571–578.Weckler B., Lutz H.D. Lattice vibration spectra. Part XCV. Infrared spectroscopic studies on the iron oxide hydroxides goethite (α), akaganeite (β), lepidocrocite (γ), and feroxyhite (δ). Eur. J. Solid State Inorg. Chem., 1998, 35 (8–9), P. 531–544.Weckler B., Lutz H.D. Lattice vibration spectra. Part XCV. Infrared spectroscopic studies on the iron oxide hydroxides goethite (α), akaganeite (β), lepidocrocite (γ), and feroxyhite (δ). Eur. J. Solid State Inorg. Chem., 1998, 35 (8–9), P. 531–544.Nakamoto K. Infrared and Raman Spectra of Inorganic and Coordination Compounds. Sixth edition. WILEY: A John Wiley & Sons, Inc., Publication. Hoboken, New Jersey. 2009, 427 p.Nakamoto K. Infrared and Raman Spectra of Inorganic and Coordination Compounds. Sixth edition. WILEY: A John Wiley & Sons, Inc., Publication. Hoboken, New Jersey. 2009, 427 p.Weckler B., Lutz H.D. IR spectroscopic studies on iron oxide hydroxides. Eur. J. Solid state Inorg. Chem., 1998, 35, P. 531–544.Weckler B., Lutz H.D. IR spectroscopic studies on iron oxide hydroxides. Eur. J. Solid state Inorg. Chem., 1998, 35, P. 531–544.Sidhu P.S. Transformation of trace element-substituted maghemite to hematite. Clays and Clay Minerals, 1988, 36 (1), P. 31–38.Sidhu P.S. Transformation of trace element-substituted maghemite to hematite. Clays and Clay Minerals, 1988, 36 (1), P. 31–38.Koga N., Takamoto Sh., Okada S., Tanaka H. A kinetic study of the thermal decomposition of iron(III) hydroxide oxides. Part 1. α-FeOOH in banded iron formatins. Thermochimica Acta, 1995, 254 (1), P. 193– 206.Koga N., Takamoto Sh., Okada S., Tanaka H. A kinetic study of the thermal decomposition of iron(III) hydroxide oxides. Part 1. α-FeOOH in banded iron formatins. Thermochimica Acta, 1995, 254 (1), P. 193– 206.Kleshcheva R.R., Kleshchev D.G., et al. The effect of synthesis parameters on the phase formation in the system FeSO4 – H2O – H+/OH− – O2 (3.5≤pH ≤13). Russian Journal of Applied Chemistry, 2003, 76 (9), P. 1379–1383.Kleshcheva R.R., Kleshchev D.G., et al. The effect of synthesis parameters on the phase formation in the system FeSO4 – H2O – H+/OH− – O2 (3.5≤pH ≤13). Russian Journal of Applied Chemistry, 2003, 76 (9), P. 1379–1383.Gallagher K.S., Feitknecht W., Mannweiler U. Mechanism of oxidation of magnetite to γ-Fe2O3. Nature, 1968, 127 (5134), P. 1118–1121.Gallagher K.S., Feitknecht W., Mannweiler U. Mechanism of oxidation of magnetite to γ-Fe2O3. Nature, 1968, 127 (5134), P. 1118–1121.Adamson A.W., Gast A.P. Physical chemistry of surface. Sixth edition. A WILEY-INTERSCIENCE PUBLICATION: A John Wiley & Sons, Inc. 1997, 804 p.Adamson A.W., Gast A.P. Physical chemistry of surface. Sixth edition. A WILEY-INTERSCIENCE PUBLICATION: A John Wiley & Sons, Inc. 1997, 804 p.Bernal J.D., Dasgypta D.R., Mackay A.S. The oxides and hydroxides of iron and their structural interrelationships. Clay miner. Bull., 1959, 4 (2), P. 131–149.Bernal J.D., Dasgypta D.R., Mackay A.S. The oxides and hydroxides of iron and their structural interrelationships. Clay miner. Bull., 1959, 4 (2), P. 131–149.

The authors declare that there are no conflicts of interest present.