High-Entropy Alloys as Catalysts for the CO2 and CO Reduction Reactions: Experimental Realization
Journal article
Nellaiappan, S., Katiyar, N.K., Kumar, R., Parui, A., Malviya, K.D., Pradeep, K.G., Singh, A.K., Sharma, S., Tiwary, C.S. and Biswas, K. (2020). High-Entropy Alloys as Catalysts for the CO2 and CO Reduction Reactions: Experimental Realization. ACS Catalysis. 10 (6), pp. 3658-3663. https://doi.org/10.1021/acscatal.9b04302
Authors | Nellaiappan, S., Katiyar, N.K., Kumar, R., Parui, A., Malviya, K.D., Pradeep, K.G., Singh, A.K., Sharma, S., Tiwary, C.S. and Biswas, K. |
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Abstract | Conversion of carbon dioxide into selective hydrocarbon using a stable catalyst remains a holy grail in the catalysis community. The high overpotential, stability, and selectivity in the use of a single-metal-based catalyst still remain a challenge. In current work, instead of using pure noble metals (Ag, Au, and Pt) as the catalyst, a nanocrystalline high-entropy alloy (HEA: AuAgPtPdCu) has been used for the conversion of CO2 into gaseous hydrocarbons. Utilizing an approach of multimetallic HEA, a faradic efficiency of about 100% toward gaseous products is obtained at a low applied potential (−0.3 V vs reversible hydrogen electrode). The reason behind the catalytic activity and selectivity of the high-entropy alloy (HEA) toward CO2 electroreduction was established through first-principles-based density functional theory (DFT) by comparing it with the pristine Cu(111) surface. This is attributed to the reversal in adsorption trends for two out of the total eight intermediates—*OCH3 and *O on Cu(111) and HEA surfaces. |
Year | 2020 |
Journal | ACS Catalysis |
Journal citation | 10 (6), pp. 3658-3663 |
Publisher | American Chemical Society (ACS) |
ISSN | 2155-5435 |
Digital Object Identifier (DOI) | https://doi.org/10.1021/acscatal.9b04302 |
Publication dates | |
20 Mar 2020 | |
Online | 19 Feb 2020 |
Publication process dates | |
Deposited | 02 Feb 2021 |
Accepted author manuscript | License File Access Level Open |
https://openresearch.lsbu.ac.uk/item/8vw55
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