Triphasic Oxygen Storage in Wet Nanoparticulate Polymer of Intrinsic Microporosity (PIM-1) on Platinum: An Electrochemical Investigation

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Autor(es): dc.contributorUniversity of Bath-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorSwansea University-
Autor(es): dc.contributorUniversity of Edinburgh-
Autor(es): dc.creatorAzevedo Beluomini, Maisa-
Autor(es): dc.creatorRamos Stradiotto, Nelson-
Autor(es): dc.creatorBoldrin Zanoni, Maria Valnice-
Autor(es): dc.creatorCarta, Mariolino-
Autor(es): dc.creatorMcKeown, Neil B.-
Autor(es): dc.creatorFletcher, Philip J.-
Autor(es): dc.creatorSain, Sunanda-
Autor(es): dc.creatorLi, Zhongkai-
Autor(es): dc.creatorMarken, Frank-
Data de aceite: dc.date.accessioned2025-08-21T20:46:45Z-
Data de disponibilização: dc.date.available2025-08-21T20:46:45Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-07-24-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1021/acsami.4c04459-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/299878-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/299878-
Descrição: dc.descriptionThe triphasic interaction of gases with electrode surfaces immersed in aqueous electrolyte is crucial in electrochemical technologies (fuel cells, batteries, sensors). Some microporous materials modify this interaction locally via triphasic storage capacity for gases in aqueous environments linked to changes in apparent oxygen concentration and diffusivity (as well as activity and reactivity). Here, a nanoparticulate polymer of intrinsic microporosity (PIM-1) in aqueous electrolyte is shown to store oxygen gas and thereby enhance electrochemical signals for oxygen reduction in aqueous media. Oxygen reduction current transient data at platinum disk electrodes suggest that the reactivity of ambient oxygen in aqueous electrolyte (typically Doxygen = 2.8 × 10-9 m2 s-1; coxygen = 0.3 mM) is substantially modified (to approximately Dapp,oxygen = 1.6 (±0.3) × 10-12 m2 s-1; capp,oxygen = 50 (±5) mM) with important implications for triphasic electrode processes. The considerable apparent concentration of oxygen even for ambient oxygen levels is important. Potential applications in oxygen sensing, oxygen storage, oxygen catalysis, or applications associated with other types of gases are discussed.-
Descrição: dc.descriptionEngineering and Physical Sciences Research Council-
Descrição: dc.descriptionDepartment of Chemistry University of Bath, Claverton Down-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University (UNESP), São Paulo-
Descrição: dc.descriptionDepartment of Chemistry Faculty of Science and Engineering Swansea University, Singleton Park-
Descrição: dc.descriptionEaStCHEM School of Chemistry University of Edinburgh, Joseph Black Building, David Brewster Road, Scotland-
Descrição: dc.descriptionMaterials & Chemical Characterisation Facility MC University of Bath, Claverton Down-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University (UNESP), São Paulo-
Formato: dc.format37865-37873-
Idioma: dc.languageen-
Relação: dc.relationACS Applied Materials and Interfaces-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectdiffusion layer-
Palavras-chave: dc.subjectelectrocatalysis-
Palavras-chave: dc.subjectenergy storage-
Palavras-chave: dc.subjectoxygen evolution-
Palavras-chave: dc.subjecttriphasic gas storage-
Título: dc.titleTriphasic Oxygen Storage in Wet Nanoparticulate Polymer of Intrinsic Microporosity (PIM-1) on Platinum: An Electrochemical Investigation-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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