Formation and growth characteristics of nanostructured carbon films on nascent Ag clusters during room-temperature electrochemical CO 2 reduction.

Autor: Watmanee S; Center of Excellence on Catalysis and Catalytic Reaction Engineering, Biorefinery Cluster, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand joongjai.p@chula.ac.th., Nganglumpoon R; Center of Excellence on Catalysis and Catalytic Reaction Engineering, Biorefinery Cluster, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand joongjai.p@chula.ac.th., Hongrutai N; Center of Excellence on Catalysis and Catalytic Reaction Engineering, Biorefinery Cluster, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand joongjai.p@chula.ac.th., Pinthong P; Center of Excellence on Catalysis and Catalytic Reaction Engineering, Biorefinery Cluster, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand joongjai.p@chula.ac.th., Praserthdam P; Center of Excellence on Catalysis and Catalytic Reaction Engineering, Biorefinery Cluster, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand joongjai.p@chula.ac.th., Wannapaiboon S; Synchrotron Light Research Institute (Public Organization) 111 University Avenue, Suranaree, Muang Nakhon Ratchasima 30000 Thailand., Szilágyi PÁ; School of Engineering and Materials Science, Queen Mary University of London Mile End Road E1 4NS London UK., Morikawa Y; Department of Precision Engineering, Graduate School of Engineering, Osaka University Osaka Japan., Panpranot J; Center of Excellence on Catalysis and Catalytic Reaction Engineering, Biorefinery Cluster, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand joongjai.p@chula.ac.th.; Graphene Electronics Research Unit, Faculty of Science, Chulalongkorn University Bangkok 10330 Thailand.; Department of Chemical & Petroleum Engineering, Faculty of Engineering, Technology and Built Environment, UCSI University 56000 Kuala Lumpur Malaysia.; Bio-Circular-Green-economy Technology & Engineering Center, BCGeTEC, Faculty of Engineering, Chulalongkorn University Bangkok Thailand 10330.
Jazyk: angličtina
Zdroj: Nanoscale advances [Nanoscale Adv] 2022 Mar 11; Vol. 4 (10), pp. 2255-2267. Date of Electronic Publication: 2022 Mar 11 (Print Publication: 2022).
DOI: 10.1039/d1na00876e
Abstrakt: Synthesis of carbon nanostructures at room temperature and under atmospheric pressure is challenging but it can provide significant impact on the development of many future advanced technologies. Here, the formation and growth characteristics of nanostructured carbon films on nascent Ag clusters during room-temperature electrochemical CO 2 reduction reactions (CO 2 RR) are demonstrated. Under a ternary electrolyte system containing [BMIm] + [BF 4 ] - , propylene carbonate, and water, a mixture of sp 2 /sp 3 carbon allotropes were grown on the facets of Ag nanocrystals as building blocks. We show that (i) upon sufficient energy supplied by an electric field, (ii) the presence of negatively charged nascent Ag clusters, and (iii) as a function of how far the C-C coupling reaction of CO 2 RR (10-390 min) has advanced, the growth of nanostructured carbon can be divided into three stages: Stage 1: sp 3 -rich carbon and diamond seed formation; stage 2: diamond growth and diamond-graphite transformation; and stage 3: amorphous carbon formation. The conversion of CO 2 and high selectivity for the solid carbon products (>95%) were maintained during the full CO 2 RR reaction length of 390 min. The results enable further design of the room-temperature production of nanostructured carbon allotropes and/or the corresponding metal-composites by a viable negative CO 2 emission technology.
Competing Interests: There are no conflicts to declare.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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