The Effect of Protonated Ethionine Adsorption on Bi(III) Electroreduction in Chlorate(VII) Solutions with Varied Water Activity

The Bi(III) electroreduction in the presence of the ethionine (Et) was studied under its different protonation and changes of water activity. In order to determine adsorption and kinetic parameters, the following were applied: DC polarography, square wave voltammetry (SWV), cyclic voltammetry (CV),...

Full description

Saved in:
Bibliographic Details
Published in:Electrocatalysis 2018-07, Vol.9 (4), p.437-443
Main Authors: Nosal-Wiercińska, Agnieszka, Grochowski, Mariusz
Format: Article
Language:English
Subjects:
Adsorption
Catalysis
Chemistry
Chemistry and Materials Science
Electrochemical impedance spectroscopy
Electrochemistry
Electrodes
Electrowinning
Energy Systems
Original Research
Parameters
Physical Chemistry
Polarography
Protonation
Reaction kinetics
Voltammetry
Water activity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The Bi(III) electroreduction in the presence of the ethionine (Et) was studied under its different protonation and changes of water activity. In order to determine adsorption and kinetic parameters, the following were applied: DC polarography, square wave voltammetry (SWV), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The influence of ethionine on the double-layer parameters at the electrode/chlorate (VII) interface and multistep Bi(III) ion electroreduction was found. The multistep Bi(III) electroreduction process is controlled by the kinetics of the formation of active Bi–Et complexes on the electrode surface. The size of the catalytic effect is connected with the equilibrium of the reaction creating active complexes before the successive transition of electrons. Graphical Abstract ᅟ
ISSN:1868-2529
1868-5994
DOI:10.1007/s12678-018-0456-4