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

Author(s):Show less -

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

• Document type: Journal article
• Source: Electrochemistry Communications; v. 143, p. 8-pg., 2022-10-01.

Abstract

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)

• FAPESP's process: 20/01822-8 - Benchtop fabrication of microgap sensor based on carbon nanomaterials for selective detection of flavonoids
• Grantee: Maísa Azevedo Beluomini
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 14/50945-4 - INCT 2014: National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies
• Grantee: Maria Valnice Boldrin
• Support Opportunities: Research Projects - Thematic Grants