Solar-Driven CO 2 Conversion via Optimized Photothermal Catalysis in a Lotus Pod Structure.

Autor: Wang H; Department of Chemistry, Yale University, CT 06520, New Haven, USA.; Energy Sciences Institute, Yale University, CT 06516, West Haven, USA., Fu S; Department of Chemistry, Yale University, CT 06520, New Haven, USA.; Energy Sciences Institute, Yale University, CT 06516, West Haven, USA., Shang B; Department of Chemistry, Yale University, CT 06520, New Haven, USA.; Energy Sciences Institute, Yale University, CT 06516, West Haven, USA., Jeon S; Department of Materials Science and Engineering, University of Pennsylvania, PA 19104, Philadelphia, USA., Zhong Y; Department of Chemistry, Yale University, CT 06520, New Haven, USA.; Energy Sciences Institute, Yale University, CT 06516, West Haven, USA., Harmon NJ; Department of Chemistry, Yale University, CT 06520, New Haven, USA.; Energy Sciences Institute, Yale University, CT 06516, West Haven, USA., Choi C; Department of Chemistry, Yale University, CT 06520, New Haven, USA.; Energy Sciences Institute, Yale University, CT 06516, West Haven, USA., Stach EA; Department of Materials Science and Engineering, University of Pennsylvania, PA 19104, Philadelphia, USA., Wang H; Department of Chemistry, Yale University, CT 06520, New Haven, USA.; Energy Sciences Institute, Yale University, CT 06516, West Haven, USA.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2023 Jul 24; Vol. 62 (30), pp. e202305251. Date of Electronic Publication: 2023 Jun 14.
DOI: 10.1002/anie.202305251
Abstrakt: Photothermal CO 2 reduction is one of the most promising routes to efficiently utilize solar energy for fuel production at high rates. However, this reaction is currently limited by underdeveloped catalysts with low photothermal conversion efficiency, insufficient exposure of active sites, low active material loading, and high material cost. Herein, we report a potassium-modified carbon-supported cobalt (K + -Co-C) catalyst mimicking the structure of a lotus pod that addresses these challenges. As a result of the designed lotus-pod structure which features an efficient photothermal C substrate with hierarchical pores, an intimate Co/C interface with covalent bonding, and exposed Co catalytic sites with optimized CO binding strength, the K + -Co-C catalyst shows a record-high photothermal CO 2 hydrogenation rate of 758 mmol g cat -1  h -1 (2871 mmol g Co -1  h -1 ) with a 99.8 % selectivity for CO, three orders of magnitude higher than typical photochemical CO 2 reduction reactions. We further demonstrate with this catalyst effective CO 2 conversion under natural sunlight one hour before sunset during the winter season, putting forward an important step towards practical solar fuel production.
(© 2023 Wiley-VCH GmbH.)
Databáze: MEDLINE
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