Breaking Scaling Relations for Enhanced Electrochemical CO 2 Reduction to CO by Introducing Soft Metal Dopants to Thiolates-Protected Coinage Metal Nanoclusters.

Autor: Efremov V; Department of Chemical Engineering, University of Seoul, Seoul, 02504, Republic of Korea., Choi M; Department of Chemical Engineering, University of Seoul, Seoul, 02504, Republic of Korea., Choi M; Department of Chemical Engineering, University of Seoul, Seoul, 02504, Republic of Korea., Yoo JS; Department of Chemical Engineering, University of Seoul, Seoul, 02504, Republic of Korea.; Center for Innovative Chemical Processes, Institute of Engineering, University of Seoul, Seoul, 02504, Republic of Korea.
Jazyk: angličtina
Zdroj: ChemSusChem [ChemSusChem] 2024 Dec 02, pp. e202401620. Date of Electronic Publication: 2024 Dec 02.
DOI: 10.1002/cssc.202401620
Abstrakt: Density functional theory calculations are employed to investigate the effects of various metal dopants on thiolates-protected transition metal nanoclusters (NCs) for CO 2 reduction, focusing on deviations from the linear scaling relation between COOH* and CO* for high CO selectivity. We first explore the most favorable positions for different dopants in several M 25 (M=parent metal) NCs and assess the potential for ligand removal under reducing conditions. Furthermore, we construct an activity volcano for CO production in D 1 M 24  (D=dopant) NCs, revealing that NCs composed of coinage parent metals with group 12 metal dopants exhibit the most significant deviation from the scaling relation. This behavior is attributed to the tendency of these NCs to bind COOH* in a bidentate form, which stabilizes the O atom of COOH* through interactions with the oxyphilic dopants. As a result, several group 12 metal doped coinage metal NCs are identified as new promising candidates for syngas production due to their high activity towards both CO and H 2 production.
(© 2024 Wiley-VCH GmbH.)
Databáze: MEDLINE
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