Polymerized Riboflavin and Anthraquinone Derivatives for Oxygen Reduction Reaction

• DOI: 10.1002/adsu.202300352
• Publication Date: 2023-12-27T10:50:33Z
• Authors: Nadine Kleinbruckner; Elisabeth Leeb; Dominik Wielend; Corina Schimanofsky; Munise Cobet; Felix Mayr; Angelina Kerschba...; Cigdem Yumusak; Jan Richtar; Markus Clark Scha...; Helmut Neugebauer; Mihai Irimia‐Vladu; Jozef Krajcovic; Niyazi Serdar Sar...
• Keywords: Anthraquinones; Carbon fibers; Glassy carbon

Abstract Hydrogen peroxide (H 2 O ) 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 efficiency of oxygen (O reduction reaction, thus producing H in an environmentally friendly way. Two aminoanthraquinones, well riboflavin (vitamin B2), successfully immobilized via oxidative electropolymerization onto both glassy carbon and paper. Of investigated compounds, polyriboflavin shows high Faradaic toward reduction, even at very low potential only −0.1 V versus SHE. This catalytic effect present neutral alkaline conditions, using paper, but highly pronounced neutral, aqueous solutions.