Polymer of intrinsic microporosity (PIM-1) enhances hydrogen peroxide production at Gii-Sens graphene foam electrodes

Autor: Maisa Azevedo Beluomini, Yu Wang, Lina Wang, Mariolino Carta, Neil B. McKeown, Simon M. Wikeley, Tony D. James, Pablo Lozano-Sanchez, Marco Caffio, Nelson Ramos Stradiotto, Maria Valnice Boldrin Zanoni, Frank Marken
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Electrochemistry Communications, Vol 143, Iss , Pp 107394- (2022)
Druh dokumentu: article
ISSN: 1388-2481
DOI: 10.1016/j.elecom.2022.107394
Popis: 3D-graphene foam electrodes (Gii-Sens) immersed in a phosphate buffer solution of pH 7 are shown to generate hydrogen peroxide at a significantly faster rate in the presence of a nanoparticulate polymer of intrinsic microporosity (PIM-1). The effect is demonstrated to be associated at least in part with oxygen binding into PIM-1 under triphasic conditions. The release of the oxygen at the electrode|solution interface quadruples H2O2 production. Generator–collector experiments are performed with a graphene foam disk generator and a platinum disk electrode collector to allow in situ detection of hydrogen peroxide and oxygen.
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