Influence of carbon support on the pyrolysis of cobalt phthalocyanine for the efficient electroreduction of CO2

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dc.contributor.authorHamonnet, Jen_AU
dc.contributor.authorBennington, MSen_AU
dc.contributor.authorJohannessen, Ben_AU
dc.contributor.authorHamilton, JLen_AU
dc.contributor.authorBrooksby, PAen_AU
dc.contributor.authorBrooker, Sen_AU
dc.contributor.authorGolovko, VBen_AU
dc.contributor.authorMarshall, ATen_AU
dc.date.accessioned2024-12-19T04:34:35Zen_AU
dc.date.available2024-12-19T04:34:35Zen_AU
dc.date.issued2022-11-14en_AU
dc.date.statistics2024-12-18en_AU
dc.description.abstractUnderstanding the nature of the reactive sites of CO2reduction catalysts is crucial to developing efficient and selective materials to help mitigate the greenhouse effect. In this research, materials based on cobalt phthalocyanine supported by carbon black and pyrolyzed at various temperatures under argon are fabricated and tested for CO2electroreduction. The results show that the high reactivity of the catalysts for the electroreduction of CO2to CO is maintained for materials prepared at temperatures up to 700 °C, with CO Faradaic efficiencies of >85% and CO current densities consistently at >40 mA cm-2at -0.86 V vs RHE. The materials annealed up to 900 °C are also remarkably active, with CO Faradaic efficiencies of >40% and CO current densities of >12 mA cm-2. The combination of X-ray diffraction, infrared and Raman spectroscopies, and X-ray absorption analysis show that the annealed materials exhibit chemical structures drastically different from those of the original CoPC and unsupported pyrolyzed catalyst while highlighting the role of the carbon black support in the formation of active species. These results give crucial insight into the reactive structure of CoPC and open the way for the development of pyrolyzed Co-N4macrocycles as a new class of materials efficient for the electroreduction of CO2,. © 2022 American Chemical Society.en_AU
dc.identifier.citationHamonnet, J., Bennington, M. S., Johannessen, B., Hamilton, J., Brooksby, P. A., Brooker, S., Golovko, V., & Marshall, A. T. (2022). Influence of carbon support on the pyrolysis of cobalt phthalocyanine for the efficient electroreduction of CO2. ACS Catalysis, 12(23), 14571-14581. doi:10.1021/acscatal.2c03929en_AU
dc.identifier.issn2155-5435en_AU
dc.identifier.issue23en_AU
dc.identifier.journaltitleACS Catalysisen_AU
dc.identifier.pagination14571-14581en_AU
dc.identifier.urihttps://doi.org/10.1021/acscatal.2c03929en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15838en_AU
dc.identifier.volume12en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectCarbonen_AU
dc.subjectPyrolysisen_AU
dc.subjectCobalten_AU
dc.subjectCarbon dioxideen_AU
dc.subjectCatalystsen_AU
dc.subjectMaterialsen_AU
dc.subjectGreenhouse effecten_AU
dc.titleInfluence of carbon support on the pyrolysis of cobalt phthalocyanine for the efficient electroreduction of CO2en_AU
dc.typeJournal Articleen_AU
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