| Title: | Light-assisted catalysis and the dynamic nature of surface species in the reverse water gas shift reaction over ▫$Cu/\gamma-Al_2O_3$▫ |
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| Authors: | ID Lorber, Kristijan (Author)
ID Arčon, Iztok (Author)
ID Huš, Matej (Author)
ID Zavašnik, Janez (Author)
ID Sancho-Parramon, Jordi (Author)
ID Prašnikar, Anže (Author)
ID Likozar, Blaž (Author)
ID Novak Tušar, Nataša (Author)
ID Djinović, Petar (Author) |
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| Files: |  URL - Source URL, visit https://pubs.acs.org/doi/10.1021/acsami.4c15849
 PDF - Presentation file, download (1,87 MB)
MD5: 8566E2FB690A43658AD1E2B87FA3FC19
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  KI - National Institute of Chemistry
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| Abstract: | 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. |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 11.12.2024 |
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| Publisher: | American Chemical Society |
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| Year of publishing: | 2024 |
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| Number of pages: | str. 67788–67790 |
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| Numbering: | Vol. 16, iss. 49 |
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| Source: | ACS applied materials & interfaces |
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| PID: | 20.500.12556/DiRROS-21079  |
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| UDC: | 544.3/.4 |
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| ISSN on article: | 1944-8252 |
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| DOI: | 10.1021/acsami.4c15849 |
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| COBISS.SI-ID: | 218386947 |
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| Copyright: | © 2024 The Authors. Published by American Chemical Society |
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| Note: | 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;
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| Publication date in DiRROS: | 19.12.2024 |
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| Views: | 745 |
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| Downloads: | 445 |
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