	US 12,344,947 B1
	Bimetallic silver doped copper complex for electrocatalytic reduction of CO₂and methods of preparation thereof
Munzir Hamedelniel Mohamed Suliman, Dhahran (SA); and Muhammad Usman, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Feb. 22, 2024, as Appl. No. 18/584,521.
Int. Cl. C25B 1/02 (2006.01); C01B 32/40 (2017.01); C25B 1/04 (2021.01); C25B 1/23 (2021.01); C25B 3/07 (2021.01); C25B 3/26 (2021.01); C25B 9/17 (2021.01); C25B 11/02 (2021.01); C25B 11/052 (2021.01); C25B 11/095 (2021.01)

CPC C25B 11/095 (2021.01) [C01B 32/40 (2017.08); C25B 1/04 (2013.01); C25B 1/23 (2021.01); C25B 3/07 (2021.01); C25B 3/26 (2021.01); C25B 9/17 (2021.01); C25B 11/02 (2013.01); C25B 11/052 (2021.01)]

17 Claims

1. A method of reducing carbon dioxide, comprising:

applying a potential of −0.1 to −2.0 V vs RHE to an electrochemical cell,

wherein the electrochemical cell is at least partially submerged in an aqueous solution comprising carbon dioxide,

wherein on applying the potential the carbon dioxide is reduced to a conversion product,

wherein the electrochemical cell includes:

an electrode; and

a counter electrode,

wherein the electrode includes:

a catalyst; and

a substrate,

wherein the catalyst is dispersed on a surface of the substrate,

wherein the catalyst, includes:

silver;

copper; and

melamine,

wherein the catalyst includes 45-55 wt. % N, 15-25 wt. % of the Cu, 15-25 wt. % Cl, 5-15 wt. % O, and 1-5 wt. % of the Ag, based on a total weight of the catalyst,

wherein the catalyst is in the form of particles having a polygonal shape and an average size of 0.5-3 μm, and

wherein the copper and the silver form a complex with the melamine.