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

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Beluomini, Maisa Azevedo ; Wang, Yu ; Wang, Lina ; Carta, Mariolino ; McKeown, Neil B. ; Wikeley, Simon M. ; James, Tony D. ; Lozano-Sanchez, Pablo ; Caffio, Marco ; Stradiotto, Nelson Ramos ; Zanoni, Maria Valnice Boldrin ; Marken, Frank

• Tipo de documento: Artigo Científico
• Fonte: Electrochemistry Communications; v. 143, p. 8-pg., 2022-10-01.

Resumo

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. (AU)

• Processo FAPESP: 20/01822-8 - Construção de sensor baseado em microgap modificado com nanomateriais de carbono para detecção seletiva de flavonoides
• Beneficiário: Maísa Azevedo Beluomini
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 14/50945-4 - INCT 2014: Instituto Nacional de Tecnologias Alternativas para Detecção, Avaliação Toxicológica e Remoção de Micropoluentes e Radioativos
• Beneficiário: Maria Valnice Boldrin
• Modalidade de apoio: Auxílio à Pesquisa - Temático