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

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

Electrochemistry Communications, Volume: 143, Start page: 107394

Swansea University Author: Mariolino Carta Orcid Logo

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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...

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Published in: Electrochemistry Communications
ISSN: 1388-2481
Published: Elsevier BV 2022
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa61963
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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.
Keywords: Graphene; Hydrogen peroxide; Generator–collector voltammetry; Disinfection; Catalysis
College: Faculty of Science and Engineering
Funders: The authors are grateful for support from the University of Bath (UK). F.M. thanks EPSRC for support (EP/K004956/1). M.A.B. is particularly grateful for the São Paulo Research Foundation (FAPESP) for a post-doctorate scholarship (grants 2020/01822-8 and 2014/50945-4). Yu Wang thanks the China Scholarship Council for a Visiting Scholar stipend (grant number 201908410374). S.M.W. thanks EPSRC (DTP) and Integrated Graphene Ltd. for scholarship support. T.D.J. wishes to thank the Royal Society for a Wolfson Research Merit Award and the Open Research Fund of the School of Chemistry and Chemical Engineering, Henan Normal University for support (2020ZD01). We thank Dr. P.J. Fletcher (Materials & Chemical Characterisation Facility MC2, University of Bath) for help with recording electron microscopy images and data.
Start Page: 107394