Polymerized Riboflavin and Anthraquinone Derivatives for Oxygen Reduction Reaction

Author:

Kleinbruckner Nadine1,Leeb Elisabeth1ORCID,Wielend Dominik1,Schimanofsky Corina1,Cobet Munise1,Mayr Felix1,Kerschbaumer Angelina1,Yumusak Cigdem1,Richtar Jan2,Scharber Markus Clark1,Neugebauer Helmut1,Irimia‐Vladu Mihai1,Krajcovic Jozef2,Sariciftci Niyazi Serdar1

Affiliation:

1. Linz Institute for Organic Solar Cells (LIOS) Institute of Physical Chemistry Johannes Kepler University Linz Altenberger Straße 69 Linz 4040 Austria

2. Faculty of Chemistry Materials Research Centre Brno University of Technology Purkynova 118 Brno 612 000 Czech Republic

Abstract

AbstractHydrogen peroxide (H2O2) is identified as a promising reagent for fuel cells, reducing the dependency on carbon‐based fuels. In this work, electrochemically synthesized polymers are employed to improve the efficiency of the oxygen (O2) reduction reaction, thus producing H2O2 in an environmentally friendly way. Two aminoanthraquinones, as well as riboflavin (vitamin B2), are successfully immobilized via oxidative electropolymerization onto both glassy carbon and carbon paper. Of the investigated compounds, polyriboflavin shows a high Faradaic efficiency toward O2 reduction, even at a very low potential of only −0.1 V versus SHE. This catalytic effect is present in neutral and alkaline conditions, using both glassy carbon and carbon paper, but highly pronounced in neutral, aqueous solutions.

Funder

Austrian Science Fund

Publisher

Wiley

Subject

General Environmental Science,Renewable Energy, Sustainability and the Environment

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