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Media type:
E-Article
Title:
Comparison of electrochemical behavior of composites based on graphene oxide, poly‐o‐phenylenediamine, and heteropolyacids
Contributor:
Pisarevskaya, Elena Yu.;
L. Klyuev, Alexey;
N. Efimov, Oleg
Published:
Wiley, 2022
Published in:
Polymers for Advanced Technologies, 33 (2022) 4, Seite 1137-1145
Language:
English
DOI:
10.1002/pat.5587
ISSN:
1042-7147;
1099-1581
Origination:
Footnote:
Description:
<jats:title>Abstract</jats:title><jats:p>The electrochemical behavior of electroactive composites based on reduced graphene oxide (RGO), poly‐o‐phenylenediamine (PPD) and heteropolyacids (HPA) (silicotungstic [SiW] and phosphotungstic [PW]) was comparatively studied by means of cyclic voltammetry (CVA), charge–discharge galvanostatic curves, and electrochemical impedance. The composites were applied to planar screen‐printed carbon electrodes as the first step to creating various devices, in particular, sensors based on novel composites. Like RGO‐PPD‐SiW composites, RGO‐PPD‐PW composites also exhibit several redox transitions. With respect to the method of synthesis (order of applying components), RGO‐PPD‐PW can exhibit the properties of a mediator catalyst as was demonstrated for example of the redox transition in the quinone‐hydroquinone couple, where reversibility is significantly enhanced by conducting the reaction on a RGO‐PPD‐PW‐modified electrode.</jats:p>