Visible light contributions transform CO₂ into higher hydrocarbons during Fischer Tropsch synthesis over K-Fe catalysts

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dc.contributor.authorZhu, Y.F.
dc.contributor.authorYuwono, J.A.
dc.contributor.authorWilson, M.
dc.contributor.authorXie, B.
dc.contributor.authorKumar, P.
dc.contributor.authorAmal, R.
dc.contributor.authorScott, J.
dc.contributor.authorLovell, E.C.
dc.date.issued2025
dc.description.abstractCurrent C₂₊ hydrocarbon production from fossil fuel feedstocks will in-time be replaced by alternate synthesis methods involving cleaner energy strategies. One approach is to incorporate direct sunlight during catalytic C₂₊ synthesis via the modified Fisher Tropsch synthesis (CO₂-FTS) reaction. Light-driven studies targeting C₂₊ products from CO₂ under high-pressure conditions are scarce. Herein, we demonstrate that direct visible light illumination can selectively boost hydrocarbon synthesis by a K-promoted Fe catalyst during the high pressure (23 bar), thermal catalytic CO₂-FTS reaction. Visible light illumination imparts carrier-induced benefits to amplify CO activation and hydrocarbon synthesis. Visible light illumination modifies the surface charge of Fe. This promotes CO adsorption and C-O bond lengthening over the K-Fe catalysts, and dissociation to *C. The lightenhanced *C production boosted Fe carbide formation which facilitates FTS. Concurrently, *C hydrogenation leads to hydrocarbon synthesis. The findings offer new insight into the cascading impact of light within dynamic catalytic systems arising from the interdependence between catalyst activation and performance.
dc.description.statementofresponsibilityYi Fen Zhu, Jodie A. Yuwono, Meriadoc Wilson, Bingqiao Xie, Priyank Kumar, Rose Amal, Jason Scott, Emma C. Lovell
dc.identifier.citationApplied Catalysis B: Environmental, 2025; 379:125736-1-125736-11
dc.identifier.doi10.1016/j.apcatb.2025.125736
dc.identifier.issn0926-3373
dc.identifier.issn1873-3883
dc.identifier.orcidYuwono, J.A. [0000-0002-0915-0756]
dc.identifier.urihttps://hdl.handle.net/2440/147782
dc.language.isoen
dc.publisherElsevier
dc.relation.granthttp://purl.org/au-research/grants/arc/IC200100023
dc.relation.granthttp://purl.org/au-research/grants/arc/DP230101861
dc.relation.granthttp://purl.org/au-research/grants/arc/DP200102121
dc.relation.granthttp://purl.org/au-research/grants/arc/DE230100789
dc.rights© 2025 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
dc.source.urihttps://doi.org/10.1016/j.apcatb.2025.125736
dc.subjectLight-assisted thermal catalysis; CO2 Fischer Tropsch synthesis; Catalyst activation; Solar fuel synthesis
dc.titleVisible light contributions transform CO₂ into higher hydrocarbons during Fischer Tropsch synthesis over K-Fe catalysts
dc.title.alternativeVisible light contributions transform CO(2) into higher hydrocarbons during Fischer Tropsch synthesis over K-Fe catalysts
dc.typeJournal article
pubs.publication-statusPublished

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