In search of the most active MN4 catalyst for the oxygen reduction reaction. The case of perfluorinated Fe phthalocyanine

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dc.date.accessioned2024-06-24T16:45:11Z
dc.date.available2024-06-24T16:45:11Z
dc.date.issued2019
dc.descriptionIndexación: Scopus.
dc.description.abstractIron macrocyclic complexes (MN4) are promising catalysts for replacing platinum (the industrial standard) in electrocatalysis. In particular, FeN4 complexes have shown lower overpotential than Pt for the oxygen reduction reaction (ORR) in alkaline media. To predict the electrochemical activity of metal electrodes and molecular catalysts towards the ORR, reactivity descriptors with typical volcano correlation have been demonstrated. The most important are M-O2 binding energy and M(n)+/M(n-1)+ redox potentials for the complexes. We studied a new Fe complex, which possesses powerful electron-withdrawing fluorine residues at the periphery of the phthalocyanine ring. Fe hexadecafluorophthalocyanine (16(F)FePc) was characterized by electron paramagnetic resonance (EPR), and X-ray photoelectron spectroscopy (XPS) in the presence and in absence of O2. Experimental and calculated O2-Fe binding energies, as well as electrochemical characterization confirms the excellent activity of this complex for the ORR placing this complex at the top of the MN4 volcano correlation.
dc.description.urihttps://pubs.rsc.org/en/content/articlelanding/2019/ta/c9ta09125d
dc.identifier.citationJournal of Materials Chemistry A Volume 7, Issue 43, Pages 24776 - 24783 2019
dc.identifier.doi10.1039/c9ta09125d
dc.identifier.issn2050-7488
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/57941
dc.language.isoen_US
dc.publisherRoyal Society of Chemistry
dc.rights.licenseATRIBUCIÓN 3.0 ESPAÑA
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/es/deed.es
dc.subjectBinding energy
dc.subjectCatalysts
dc.subjectComplexation
dc.subjectElectrocatalysis
dc.subjectElectrolytic reduction
dc.subjectElectron spin resonance spectroscopy
dc.subjectOxygen
dc.subjectParamagnetic resonance
dc.subjectRedox reactions
dc.subjectVolcanoes
dc.subjectX ray photoelectron spectroscopy
dc.titleIn search of the most active MN4 catalyst for the oxygen reduction reaction. The case of perfluorinated Fe phthalocyanine
dc.typeArtículo
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