Synthesis of a Graphene-Encapsulated Fe 3 C/Fe Catalyst Supported on Sporopollenin Exine Capsules and Its Use for the Reverse Water–Gas Shift Reaction
dc.contributor.author | Malik, W | |
dc.contributor.author | Victoria Tafoya, JP | |
dc.contributor.author | Doszczeczko, S | |
dc.contributor.author | Jorge Sobrido, AB | |
dc.contributor.author | Skoulou, VK | |
dc.contributor.author | Boa, AN | |
dc.contributor.author | Zhang, Q | |
dc.contributor.author | Ramirez Reina, T | |
dc.contributor.author | Volpe, R | |
dc.date.accessioned | 2023-11-28T13:52:45Z | |
dc.date.available | 2023-11-28T13:52:45Z | |
dc.date.issued | 2023 | |
dc.identifier.issn | 2168-0485 | |
dc.identifier.uri | https://qmro.qmul.ac.uk/xmlui/handle/123456789/92316 | |
dc.description.abstract | Bioderived materials have emerged as sustainable catalyst supports for several heterogeneous reactions owing to their naturally occurring hierarchal pore size distribution, high surface area, and thermal and chemical stability. We utilize sporopollenin exine capsules (SpECs), a carbon-rich byproduct of pollen grains, composed primarily of polymerized and cross-linked lipids, to synthesize carbon-encapsulated iron nanoparticles via evaporative precipitation and pyrolytic treatments. The composition and morphology of the macroparticles were influenced by the precursor iron acetate concentration. Most significantly, the formation of crystalline phases (Fe3C, α-Fe, and graphite) detected via X-ray diffraction spectroscopy showed a critical dependence on iron loading. Significantly, the characteristic morphology and structure of the SpECs were largely preserved after high-temperature pyrolysis. Analysis of Brunauer–Emmett–Teller surface area, the D and G bands from Raman spectroscopy, and the relative ratio of the C═C to C–C bonding from high-resolution X-ray photoelectron spectroscopy suggests that porosity, surface area, and degree of graphitization were easily tuned by varying the Fe loading. A mechanism for the formation of crystalline phases and meso-porosity during the pyrolysis process is also proposed. SpEC-Fe10% proved to be highly active and selective for the reverse water–gas shift reaction at high temperatures (>600 °C). | en_US |
dc.publisher | American Chemical Society (ACS) | en_US |
dc.relation.ispartof | ACS Sustainable Chemistry & Engineering | |
dc.rights | This item is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. | |
dc.rights | Attribution 3.0 United States | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/us/ | * |
dc.title | Synthesis of a Graphene-Encapsulated Fe 3 C/Fe Catalyst Supported on Sporopollenin Exine Capsules and Its Use for the Reverse Water–Gas Shift Reaction | en_US |
dc.type | Article | en_US |
dc.rights.holder | © 2023 The Authors. Published by American Chemical Society. | |
dc.identifier.doi | 10.1021/acssuschemeng.3c00495 | |
pubs.notes | Not known | en_US |
rioxxterms.funder | Default funder | en_US |
rioxxterms.identifier.project | Default project | en_US |
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