Development

Prof. V.L. Volkov        Dr. G.S. Zakharova     Dr. N.V. Podvalnaya

·    Area of research: hydrochemistry of solid state

·    The main fundamental task: development of scientific principles and efficient processes of synthesis of solid-phase oxide compounds in aqueous and aqueous-organic media

·    Practical aim: synthesis of novel polyfunctional nano-sized materials and composites on the basis of d-element oxides

·    Scientific contacts: Institute of Metal Physics, Institute of Electrophysics, Institute of Organic Synthesis UB RAS, Ural Polytechnical University, Institute of Physics of Semiconductors (Vilnius, Lithuania), Wukhan Technological University, Institute of Materials and Technologies (Wukhan, China), Korean Polytechnical University, Innovation Nanotechnology Centre (Seuol, Korea)

Basic Achievements

-        An original zol-gel method has been developed for the production of finely dispersed powders, films and nanotubes of simple and complex d-element oxides

-        A film humidity sensor and a current source with aqueous electrolyte for meteorological radiosondes have been worked out

-        A high-performance catalyst for removing toxic halogen benzene from gas discharge has been produced. 100 % conversion is attained at T = 300 °C when the concentration of phenyl chloride is 900 – 9000 ppm.

-        A bifunctional composite sensor has been developed to provide automatic control over removal of heavy non-ferrous metal and arsenic ions from sewage.

-        A new acid-free method for extraction of vanadium from different solutions has been worked out.

This work was supported by RFBR grants 03-03-32104, 05-03-32834, RFBR-GFEN (China) grants 99-03-39065, 03-03-39009, and SS grant 829.203.3.

Publications

Patents

1.      Podvalnaya N.V., Volkov V.L. Method for removal of vanadium from solutions. Bul. isobret. No. 23. 20.08.2002. RF Patent No. 2187570. (in Russian)

2.      Volkov V.L., Podvalnaya N.V., Yanchenko M.Yu. Alkaline element source for a device producing alkaline element vapors. RF Patent No. 2187570. Bul. 2002. No. 23. (in Russian)

3.      Nikolayeva O.A., Kodolov V.I., Zakharova G.S., Shayakhmetova E.Sh. et al. Method for producing carbon and metal containing nanostructures. RF Patent No. 2225835 dated 20.03.2004. (in Russian)

4.      Volkov V.L., Zakharova G.S., Volkova E.G. Method for producing vanadium oxide nanotubes. FR Patent No. 2240980. Bul. 2004. No. 33. (in Russian)

5.      Volkov V.L. Ion-selective compositional electrode. RF Patent No. 2235996. Bul. 2004. No. 25. (in Russian)

6.      Volkov V.L., Zainulin Yu.G., Kadyrova N.I., Zakharova G.S. Vanadium oxide bronze, method of its production and application as a magnetic or electrode-active material. RF Patent No. 2245846. Bul. 2005. No. 4. (in Russian)

7.      Volkov V.L., Zakharova G.S., Ivanov V.E. Humidity sensor. RF Patent No. 2242752. Bul. 2004. No. 35. (in Russian)

Monographs

1.      Volkov V.L., Zakharova G.S., Bondarenka V.M. Xerogels of simple and complex polyvanadates. Ekaterinburg: UrO RAN. 2001. 194 p. (in Russian)

2.      Zakharova G.S., Volkov V.L., Ivanovskaya V.V., Ivanovskii A.L. Nanotubes and related metal oxide nanostructures. Ekaterinburg: UrO RAN. 2005. 261 p. (in Russian)

Reviews

1.      Volkov V.L., Lazarev V.F., Zakharova G.S. Cathode materials made of vanadium oxide (V) xerogels in chemical current sources. Electrokhimicheskaya energetika. 2001. V. 1. No. 3. P. 3-8. (in Russian)

2.      Zakharova G.S., Volkov V.L. Intercalation compounds based on vanadium oxide (V) xerogel. Uspekhi khimii. 2003. V. 72. P. 246-362. (in Russian)

3.      Zakharova G.S., Enyashin A.N., Ivanovskaya V.V., Volkov V.L., Ivanovskii A.L. Titanium and vanadium oxide nanotubes: synthesis and modeling. Inzhenernaya fizika. 2003. No. 5. P. 19-41. (in Russian)

4.      Zakharova G.S., Volkov V.L., Ivanovskaya V.V., Ivanovskii A.L. Nanotubes of d-metal oxides and related nanostructures: synthesis and modeling. Uspekhi khimii. 2005. V. 74. P. 651-685. (in Russian)

5.      Volkov V.L., Zakharova G.S., Volkova E.G., Kuznetsov M.V., Murzakayev A.M. Vanadium oxide nanotubes. Materialovedeniye. 2005. No. 1. P. 40-45. (in Russian)

Papers in foreign journals

1.      Ozerov R.P., Streltsov V.A., Sobolev A.N., Volkov V.L., Figgis B.N. Electron density in the sodium vanadium oxide bronze b-Na_xV₂O₅ at 9 K. Actya Cryst. 2001. V. B57. P. 244-250.

2.      Bondarenka V., Volkov V., Tvardauskas H., Grebinskij S., Mickevicius S., Zakharova G. Ion beam induced preferential removal of oxygen from vanadium hydrates. Nucl. Instr. And Meth. In Phys. Res. 2001. V. 178B. P. 323-326.

3.      Podvalnaya N.V., Volkov V.L., Andeykov E.I. Potassium vanadates of mixed valence as sulfuric acid catalyst precursors. Reaction Kinetics and Catalysis Letters. 2001. V. 73. No. 2. P. 357-365.

4.      Bondarenka V., Volkov V., Grebinskij S., Mickevicius S., Zakharova G. XPS study of vanadium-yttrium hydrates. J. Electron Spectroscopy and Related Phenomena. 2001. V. 120. P. 131-135.

5.      Bondarenka V., Grebinskij S., Mickevicius S., Volkov V., Zakharova G. Electrical conductivity of vanadium pentoxide xerogels. Lithuanian J. of Physics. 2002. V. 42. No. 6. P. 435-439.

6.      Bondarenka V., Grebinskij S., Mickevicius S., Volkov V., Zakharova G. Proton transport and optical properties of vanadium hydrates. Mass and Charge Transport in Inorganic Materials. Techna Srl. 2003. P. 399-406.

7.      Tvardauskas H., Bondarenka V., Volkov V., Podvalnaia N. XPS Study of Rb-V-O xerogels. Lithuanian J. of Physics. 2002. V. 42. No. 5. P. 341-346.

8.      Zakharova G.S., Volkov V.L. Sol-gel synthesis and properties of mixed hydrated oxides H_xV_xW_1-xO₃×nH₂O. Mater. Res. Bull. V. 39. No. 13. P. 2049-2055.

9.      Enyashin A.N., Ivanovskaya V.V., Makurin Yu.N., Volkov V.L., Ivanovskii A.L. Electronic properties of Mo-doped cylindrical and scroll-like divanadium pentoxide nanotubes. Chem. Phys. Lett. 2004. V. 392. P. 555-560.

10.  Bondarenka V., Grebinskij S., Volkov V., Zakharova G. et al. X-ray photoelectron spectra of vanadium-titanium hydrated compounds. Lithuanian J. of Physics. 2003. V. 43. No. 4. P. 309-313.

11.  Zakharova G.S., Volkov V.L. Synthesis and properties of the mixed hydrated oxides V_2-yW_yO_5+d×nH₂O. J. Sol-Gel Science and Technology. V. 34. 2005. P. 293-298.

Papers in national journals

1.      Khokhriakov N.V., Kodolov V.I., Nikolaeva O.A., Volkov V.L. Quantum-chemical investigation of alcohols dehydration and dehydrogenation possibility in interface layers of vanadium oxide systems. Zh. Khimicheskaya fizika i mezoskopiya. 2001. V. 3. No. 1. P. 53-65.

2.      Podvalnaya N.V., Volkov V.L., Kristallov L.V. Interaction in MVO₃-VOSO₄-H₂O (M = Rb, Cs) systems and phase composition of precipitates. Zh. Neorgan. khimii. 2001. V. 46. No. 4. P. 663-668. (in Russian)

3.      Volkov V.L., Zakharova G.S., Kristallov L.V. et al. Synthesis, structure and properties of ammonium polyvanadate molybdates. Neorgan. materialy. 2001. V. 37. No. 4. P. 492-497. (in Russian)

4.      Volkov V.L., Zakharova G.S., Yakovlev A.V., Ivanov V.E. Novel film materials for atmospheric parameter sensors. Perspektivnye materialy. 2001. No. 3. P. 30-33. (in Russian)

5.      Volkov V.L., Zakharova G.S., Dai G., Tong M. Water vapor and ethanol sensors based on polyvanadatomolybdate xerogel films. Mikrosistemnaya tekhnika. 2001. No. 7. P. 6-9. (in Russian)

6.      Leonidov I.A., Volkov V.L., Zakharova G.S., Leonidova O.N. Proton conductivity of H_2-x(NH₄)_xV₉Mo₃O_29.5×nH₂O xerogel films. Neorgan. materialy. 2002. V. 38. No. 10. P. 1-6. (in Russian)

7.      Volkov V.L., Zakharova G.S. Thermodynamic and electrical properties of (NH₄)_2-xH_xV₉Mo₃O_31+d×nH₂O xerogels. Zhurn. fiz. khimii. 2002. V. 76. No. 5. P. 829-835. (in Russian)

8.      Zakharova G.S., Volkov V.L., Cherkashenko V.M. Synthesis and properties of hydrated solid solutions H_x/2V_2-xMo_xO_5+d×nH₂O. Zhurn. neorgan. khimii. 2002. V. 47. No. 6. P. 897-901. (in Russian)

9.      Kristallov L.V., Podvalnaya N.V., Perelyaeva L.A. IR spectra of oxide compounds of the composition M₂V₃O₈, where M = K, Rb, Cs, NH₄, with a mixed degree of vanadium oxidation. Zhurn. neorgan. khimii. 2002. V. 47. No. 2. P. 243-245. (in Russian)

10.  Volkov V.L., Zakharova G.S., Kuznetsov M.V., Kristallov L.V., Dai G., Tong M. Study of complex hydrated vanadium (V) and titanium (IV) oxides produced by zol-gel technique. Zhurn. neorgan. khimii. 2002. V. 47. No. 2. P. 172-177. (in Russian)

11.  Volkov V.L., Zakharova G.S. Partial thermodynamic functions of hydrogen in complex hydrated vanadium (V) and tungsten (VI) oxides. Zh. fiz. khimii. 2003. V. 77. No. 4. P. 605-609. (in Russian)

12.  Volkov V.L., Zakharova G.S. Electric conductivity of H₂V_12-yW_yO_31+d×nH₂O and H_xV_xW_1xO₃×nH₂O. Neogan. materialy. 2003. V. 39. No. 7. P. 854-858. (in Russian)

13.  Zakharova G.S., Volkov V.L., Kuznetsov M.V. Study of complex hydrated vanadium (V) and tungsten (VI) oxides produced by zol-gel technique. Zh. neorgan. khimii. 2003. V. 48. No. 1. P. 99-103. (in Russian)

14.  Volkov V.L., Podvalnaya N.V. Hydrolytic deposition of vanadium compounds in MVO₃-VOSO₄-H₂O systems. Zh. neorgan. khimii. 2003. V. 48. No. 10. P. 1-4. (in Russian)

15.  Kadyrova N.I., Zakharova G.S., Zainulin Yu.G., Volkov V.L., Dyachkova T.V., Tyutyunnik A.P., Zubkov V.G. Synthesis and some properties of novel compounds NaCu₃V₄O₁₂ and CaCu₃V₄O₁₂ obtained under all-round compression. DAN. 2003. V. 392. No. 6. P. 776. (in Russian)

16.  Volkov V.L., Kadyrova N.I., Zakharova G.S. et al. New perovskite-like bronze Na_0.25Cu_0.75VO₃. Neorgan. mater. 2004. V. 40. No. 2. P. 228-231. (in Russian)

17.  Kadyrova N.I., Tyutyunnik A.P., Zubkov V.G., Zakharova G.S., Volkov V.L. et al. Thermobaric synthesis and crystal structure of novel compounds NaCu₃V₄O₁₂ and CaCu₃V₄O₁₂. Zhurn. neorgan. khimii. 2003. V. 48. No. 12. P. 1941-1946. (in Russian)

18.  Volkov V.L., Zakharova G.S. Ionic conduction of (PbOH)₂V₁₂O₃₁×nH₂O. Neorgan. mater. 2003. V. 39. No. 11. P. 1373-1376. (in Russian)

19.  Volkov V.L., Zakharova G.S., Volkova E.G., Kuznetsov M.V. Novel vanadium oxide nanotubes. Zhurn. neorgan. khimii. 2004. V. 49. No. 6. P. 885-889. (in Russian)

20.  Volkov V.L., Zakharova G.S., Kuznetsov M.V. Synthesis and properties of new vanadium oxide tubulenes. Zhurn. neorgan. khimii. 2004. V. 49. No. 7. P. 1165-1169. (in Russian)

21.  Kadyrova N.I., Zakharova G.S., Zainulin Yu.G., Volkov V.L. Synthesis and some properties of novel compounds NaCu₃V₄O₁₂ and CaCu₃V₄O₁₂ obtained under all-round compression. DAN. 2003. V. 392. No. 6. P. 776-778. (in Russian)

22.  Podvalnaya N.V., Mirolyubov V.R., Volkov V.L. Solubility of rubidium and caesium hexavanadates in sulphuric acid. Zhurn. neorgan. khimii. 2004. V. 49. No. 5. P. 858-861. (in Russian)

23.  Bondarenka V., Volkov V.L., Podvalnaya N.V., Grebinskii S., Mitskyavichus S., Tvardauskas G. X-ray photoelectron spectra and electrical characteristics of polyvanadate K_4.3V₆O_16.2. Neorgan. materialy. 2004. V. 40. No. 3. P. 336-339. (in Russian)

24.  Volkov V.L., Zakharova G.S., Volkova E.G. Vanadium oxide nanotubes with introduced organic radicals. ZhNKh. 2005. V. 50. No. 3. P. 378-383. (in Russian)

25.  Volkov V.L., Zakharova G.S. Partial thermodynamic functions of hydrogen in hydrated complex vanadium (V) and titanium (IV) oxides. Zhurn. fizi