20.500.12556/DiRROS-21079 Light-assisted catalysis and the dynamic nature of surface species in the reverse water gas shift reaction over ▫$Cu/\gamma-Al_2O_3$▫ The reverse water gas shift (RWGS) reaction converts CO2 and H2 into CO and water. We investigated Cu/γ-Al2O3 catalysts in both thermally driven and light-assisted RWGS reactions using visible light. When driven by combined visible light and thermal energy, the CO2 conversion rates were lower than in the dark. Light-assisted reactions showed an increase in the apparent activation energy from 68 to 87 kJ/mol, indicating that light disrupts the energetically favorable pathway active in the dark. A linear correlation between irradiance and decreasing reaction rate suggests a photon-driven phenomenon. In situ diffuse reflectance infrared Fourier transform spectroscopy and TD-DFT analyses revealed that catalyst illumination causes significant, partly irreversible surface dehydroxylation, highlighting the importance of OH groups in the most favorable RWGS pathway. This study offers a novel approach to manipulate surface species and control activity in the RWGS reaction. kataliza vidna svetloba reakcije spektroskopija baker true false true American Chemical Society ACS applied materials & interfaces Angleški jezik Slovenski jezik © 2024 The Authors. Published by American Chemical Society Neznano 2024-12-19 09:10:00 2024-12-19 09:20:04 2024-12-20 03:39:02 0000-00-00 00:00:00 2024 0 0 Nasl. z nasl. zaslona; Soavtorji iz Slovenije: Iztok Arčon, Matej Huš, Janez Zavašnik, Anže Prašnikar, Blaž Likozar, Nataša Novak Tušar, Petar Djinović; Opis vira z dne 10. 12. 2024; str. 67788–67790 iss. 49 Vol. 16 Dec. 11, 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2024-12-11 544.3/.4 1944-8252 10.1021/acsami.4c15849 218386947 https://pubs.acs.org/doi/10.1021/acsami.4c15849 1 a6058d7c-bde0-11ef-ba3f-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=29870 RAZ_Lorber_Kristijan_2024.pdf RAZ_Lorber_Kristijan_2024.pdf 1 8566E2FB690A43658AD1E2B87FA3FC19 9f3985fe67859d0275e9614e7256a66d345ee0448611ff6a0100ea3f621a94eb 64944802-bdf9-11ef-ba3f-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=29885 Kemijski inštitut 0 0 0