Physical-Chemical and Photocatalytic Properties of V-Mg Oxide Compositions Synthesized by Different Methods

Authors

  • S. V. Khalameida Institute for Sorption and Problems of Endoecology of National Academy of Sciences of Ukraine
  • V. V. Sydorchuk Institute for Sorption and Problems of Endoecology of National Academy of Sciences of Ukraine
  • J. Skubiszewska-Zięba Maria Curie-Skłodowska University
  • R. Leboda Maria Curie-Skłodowska University
  • V. O. Zazhigalov Institute for Sorption and Problems of Endoecology of National Academy of Sciences of Ukraine

Abstract

New approaches to vanadium-magnesium oxide catalysts synthesis have been proposed: using of mechanochemical (MChT), hydrothermal (HTT), and microwave (MWT) treatments; and V2O5 gel as initial reagent. XRD, DTA-TG, FTIR and UV-Vis spectroscopy, adsorption of nitrogen have been used for study of precursors and catalysts structure. Magnesium methavanadate MgV2O6·2H2O with high specific surface area transformed into orthovanadate Mg3V2O8 – pyrovanadate Mg2V2O7 mixture is formed as a result of MWT and HTT. The sample prepared from microwave precursor possesses the highest specific surface area, developed porous structure, and maximum photocatalytic activity under visible light on safranin T degradation in aqueous medium.

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(1)
Khalameida, S. V.; Sydorchuk, V. V.; Skubiszewska-Zięba, J.; Leboda, R.; Zazhigalov, V. O. Physical-Chemical and Photocatalytic Properties of V-Mg Oxide Compositions Synthesized by Different Methods. Him. Fiz. Tehnol. Poverhni 2013, 4, 47-54.

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Vol. 4 No. 1 (2013): Chemistry, Physics and Technology of Surface / Himia, Fizika ta Tehnologia Poverhni

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