A robust Fe-based heterogeneous photocatalyst for the visible-light-mediated selective reduction of an impure CO₂ stream

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Ghosh, Topi ; Ren, Peng ; Franck, Philippe ; Tang, Min ; Jaworski, Aleksander ; Barcaro, Giovanni ; Monti, Susanna ; Chouhan, Lata ; Rabeah, Jabor ; Skorynina, Alina ; Silvestre-Albero, Joaquin ; Simonelli, Laura ; Rokicińska, Anna ; Debroye, Elke ; Kuśtrowski, Piotr ; Bals, Sara ; Das, Shoubhik:
A robust Fe-based heterogeneous photocatalyst for the visible-light-mediated selective reduction of an impure CO₂ stream.
In: Chemical Science. Bd. 15 (2024) Heft 29 . - S. 11488-11499.
ISSN 2041-6539
DOI der Verlagsversion: https://doi.org/10.1039/D4SC02773F

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Abstract

The transformation of CO2 into value-added products from an impure CO2 stream, such as flue gas or exhaust gas, directly contributes to the principle of carbon capture and utilization (CCU). Thus, we have developed a robust iron-based heterogeneous photocatalyst that can convert the exhaust gas from the car into CO with an exceptional production rate of 145 μmol g−1 h−1. We characterized this photocatalyst by PXRD, XPS, ssNMR, EXAFS, XANES, HR-TEM, and further provided mechanistic experiments, and multi-scale/level computational studies. We have reached a clear understanding of its properties and performance that indicates that this highly robust photocatalyst could be used to design an efficient visible-light-mediated reduction strategy for the transformation of impure CO2 streams into value-added products.