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Article

Investigations of Carbon Nitride-Supported Mn3O4 Oxide Nanoparticles for ORR

1
Department of Chemistry, University of Reading, Reading RG6 6AD, UK
2
Institut für Chemie and Iris Adlershof, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
3
Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali-ChiBioFarAm, University of Messina, Viale Ferdinando Stagno D’Alcontres, 31 Vill. S. Agata, 98166 Messina, Italy
4
Rutherford Appleton Laboratory, ISIS Facility, Chilton, Didcot OX11 0QX, UK
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Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, e IMEYMAT, Instituto Universitario de Investigación en Microscopía Electrónica y Materiales, Universidad de Cádiz, 11510 Puerto Real, Spain
6
Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
7
School of Science, Engineering and Environment, University of Salford, Manchester M5 4WT, UK
*
Author to whom correspondence should be addressed.
Catalysts 2020, 10(11), 1289; https://doi.org/10.3390/catal10111289
Received: 1 September 2020 / Revised: 31 October 2020 / Accepted: 31 October 2020 / Published: 6 November 2020
(This article belongs to the Special Issue Electrocatalysis in Energy and Green Chemistry)
Earth-abundant Mn-based oxide nanoparticles are supported on carbon nitride using two different immobilization methods and tested for the oxygen reduction reaction. Compared to the metal free CN, the immobilization of Mn oxide enhances not only the electrocatalytic activity but also the selectivity towards the 4e- reduction reaction of O2 to H2O. The XPS analysis reveals the interaction of the pyridine N species with Mn3O4 nanoparticles being particularly beneficial. This interaction is realized—although to a limited extent—when preparing the catalysts via impregnation; via the oleic acid route it is not observed. Whilst this work shows the potential of these systems to catalyze the ORR, the main limiting factor is still the poor conductivity of the support which leads to overpotential. View Full-Text
Keywords: carbon nitride; ORR; XPS; UV-Vis carbon nitride; ORR; XPS; UV-Vis
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MDPI and ACS Style

Large, A.I.; Wahl, S.; Abate, S.; da Silva, I.; Delgado Jaen, J.J.; Pinna, N.; Held, G.; Arrigo, R. Investigations of Carbon Nitride-Supported Mn3O4 Oxide Nanoparticles for ORR. Catalysts 2020, 10, 1289. https://doi.org/10.3390/catal10111289

AMA Style

Large AI, Wahl S, Abate S, da Silva I, Delgado Jaen JJ, Pinna N, Held G, Arrigo R. Investigations of Carbon Nitride-Supported Mn3O4 Oxide Nanoparticles for ORR. Catalysts. 2020; 10(11):1289. https://doi.org/10.3390/catal10111289

Chicago/Turabian Style

Large, Alexander I., Sebastian Wahl, Salvatore Abate, Ivan da Silva, Juan J. Delgado Jaen, Nicola Pinna, Georg Held, and Rosa Arrigo. 2020. "Investigations of Carbon Nitride-Supported Mn3O4 Oxide Nanoparticles for ORR" Catalysts 10, no. 11: 1289. https://doi.org/10.3390/catal10111289

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