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

• Autor(a) principal: Azevedo Beluomini, Maisa [UNESP]
• Data de Publicação: 2022
• Outros Autores: Wang, Yu, Wang, Lina, Carta, Mariolino, McKeown, Neil B., Wikeley, Simon M., James, Tony D., Lozano-Sanchez, Pablo, Caffio, Marco, Ramos Stradiotto, Nelson [UNESP], Valnice Boldrin Zanoni, Maria [UNESP], Marken, Frank
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1016/j.elecom.2022.107394; http://hdl.handle.net/11449/249383
• topic: Catalysis; Disinfection; Generator–collector voltammetry; Graphene; Hydrogen peroxide

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.