US 11,702,720 B2
Method of producing stable Cu-based core-shell nanoparticles
Yong Wang, Longueuil (CA); Dongling Ma, Pointe-Claire (CA); and Mohamed Chaker, Montréal (CA)
Assigned to INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Québec (CA)
Filed by INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Québec (CA)
Filed on Dec. 21, 2020, as Appl. No. 17/129,795.
Claims priority of provisional application 62/964,891, filed on Jan. 23, 2020.
Prior Publication US 2021/0229169 A1, Jul. 29, 2021
Int. Cl. C22C 1/04 (2023.01); B22F 9/30 (2006.01); B22F 1/054 (2022.01); B22F 1/145 (2022.01); B22F 1/17 (2022.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01); B22F 1/0545 (2022.01)
CPC C22C 1/0425 (2013.01) [B22F 1/054 (2022.01); B22F 1/145 (2022.01); B22F 1/17 (2022.01); B22F 9/30 (2013.01); B22F 1/0545 (2022.01); B22F 2301/10 (2013.01); B22F 2301/255 (2013.01); B22F 2304/054 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A process of forming a Cu core-shell nanoparticle comprising a core comprising Cu and a shell comprising at least one noble metal, the process comprising
mixing a Cu source and an amine at a temperature of about 200° C. to about 270° C. under an inert atmosphere to obtain a mixture;
cooling the mixture to form a Cu nanoparticle dispersed in the amine; and
adding a noble metal composition comprising a phosphine to obtain the core-shell nanoparticle.