Refine your search�ソスF     
Report No.
 - 

Reduction behavior of neptunium(V) at a gold or platinum electrode during controlled potential electrolysis and procedures for electrochemical preparations of neptunium(IV) and (III)

Kitatsuji, Yoshihiro  ; Kimura, Takaumi ; Kihara, Sorin*

Unique current-time relations were observed during the controlled potential electrolysis for the reduction of Np(V) to Np(IV) or Np(III) at a Au or Pt electrode. The reduction process of Np(V) was elucidated based on bulk electrolysis and voltammetry: Though Np(V) is not reduced directly at a Au electrode, it is reduced by chemical reaction with Np(III) which is produced by the electrode reduction of Np(IV). The reduction of Np(V) at a Pt electrode is initiated by the electrocatalytic reduction to Np(IV) with the hydrogen atom which is produced by the electrode reduction of H$$^{+}$$ and adsorbed on the Pt electrode surface. The Np(IV) produced functions as an electron transfer mediator to reduce Np(V) similarly to the reaction at a Au electrode. The above described catalytic reduction processes of Np(V) were elucidated with the aid of digital simulation. Methods useful for the preparation of Np(IV) and Np(III) by bulk electrolysis were proposed based on the experimental results.

Accesses

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.