The ABTS-HRP System as an Alternative Method to RRDE for the Determination of the Selectivity of the Oxygen Reduction Reaction
|Author(s)||Cheng Xi1, 4, Challier Lylian3, Etcheberry Arnaud2, Noel Vincent3, Perez Henri1|
|Affiliation(s)||1 : CEA DSM IRAMIS SPAM LFP CNRS URA 2453, Lab Francis Perrin, F-91191 Gif Sur Yvette, France.
2 : Univ Versailles, UMR CNRS 8180, ILV, Inst Lavoisier, F-78035 Versailles, France.
3 : Univ Paris Diderot, ITODYS, UMR CNRS 7086, F-75205 Paris, France.
4 : Agence Environm & Maitrise Energie 20, F-49004 Angers 01, France.
|Source||International Journal Of Electrochemical Science (1452-3981) (Esg), 2012-07 , Vol. 7 , N. 7 , P. 6247-6264|
|WOS© Times Cited||7|
|Keyword(s)||ORR, selectivity, hydrogen peroxide, porous electrodes|
A 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS)-H2O2-peroxidase system was involved to study the oxygen reduction reaction (ORR) selectivity in acid medium. The average number of electron transferred per oxygen molecule (n) was calculated by measuring the quantity of H2O2 produced during the oxygen reduction reaction, taking advantage of the high activity of peroxidase enzyme coupled with the ABTS chromogen. The method was validated using electrode materials for which the electron pathway is established. It is simple, accurate and can be used on various kind of electrode structure.