Abstract
The behaviour of a variety of vanadium compounds (NaVO 3 , V 2 O 5 , V 2 O 4 , VOSO 4 ·5H 2 O and VOCl 2 ) at a carbon paste electrode has been investigated by cyclic voltammetry, chronopotentiometry and chronoamperometry, using hydrochloric acid and perchloric acid as electrolytic binders. The experiments revealed the occurrence of two different systems where the dissolved fraction was that involved in charge transfer processesThe reduction processes observed were the conversions V(V) → V(IV) and V(IV) → V(II), whereas t oxidation processes involved were V(II) → V(III), V(III) → V(IV) and V(IV) → V(V). Additional anodic and cathodic peaks were obtained when hydrochloric acid was used as electrolyte; reduction peaks were demonstrated to involve solid species and chloride ions in the charge transfer process. The influence of electrolyte concentration and scan rate on the behaviour of the electrode and the redox systems of vanadium have been investigated, and plausible electrodic mechanisms are discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
