The electrochemical behaviour of the V2O5+MoO3 system and the defect structure of (MoxV1-x)2O5 solid solution |
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| Authors: | MYa Hodos EV Bazarova AP Palkin KhZ Brainina |
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| Institution: | Institute of Chemistry, Ural Science Centre of the U.S.S.R. Academy of Sciences, Sverdlovsk Institute of National Economy, Pervomayskaya 91, Sverdlovsk, U.S.S.R. |
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| Abstract: | The V2O5+MoO3 system has been examined by a stripping voltammetry technique using a carbon paste electroactive electrode and EPR. The feasibility of establishing the phase composition and the capability oxygen chemisorption has been demonstrated. The processes of electrochemical transformations of the substances to be investigated and of chemisorbed oxygen appearing on their surface as a result of electrochemical water oxidation serve as sources of information. The cathodic signal spectrum of chemisorbed oxygen anables its energetic inhomogeneity to be estimated, while the difference in potentials of the corresponding cathodic and anodic currents, its lability. It has been established that in the system investigated the dominant role in processes of oxygen chemisorption is played by the V4+ surface centres. A model of defect formation in solid solution (MoxV1-x)2O5 is discussed. |
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