US 12,269,096 B2
Method for preparing dispersed metal nanoparticles and metal nanoparticles prepared thereby
Woo Sik Kim, Suwon-si (KR); Taekyung Yu, Seoul (KR); and Jiang Pengfei, Yongin-si (KR)
Assigned to University-Industry Cooperation Group of Kyung Hee University, Yongin-si (KR)
Filed by University-Industry Cooperation Group of Kyung Hee University, Yongin-si (KR)
Filed on Sep. 29, 2022, as Appl. No. 17/956,232.
Claims priority of application No. 10-2021-0131117 (KR), filed on Oct. 1, 2021.
Prior Publication US 2023/0106726 A1, Apr. 6, 2023
Int. Cl. B22F 9/24 (2006.01); B01J 19/18 (2006.01); B22F 1/054 (2022.01); B22F 1/14 (2022.01); B82Y 40/00 (2011.01)
CPC B22F 9/24 (2013.01) [B01J 19/1806 (2013.01); B22F 1/054 (2022.01); B22F 1/14 (2022.01); B01J 2219/00166 (2013.01); B01J 2219/024 (2013.01); B01J 2219/0245 (2013.01); B22F 2301/10 (2013.01); B22F 2301/25 (2013.01); B82Y 40/00 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method comprising:
preparing a dispersed metal nanoparticle by reacting a metal precursor in aqueous solution and under a Taylor vortex flow formed in a continuous Couette-Taylor reactor; and
controlling at least one of a rotation speed of the continuous Couette-Taylor reactor above a critical speed, a mean residence time of the nanoparticles in the continuous Couette-Taylor reactor, and a feed concentration of the metal precursor to control dispersion of nanoparticles,
and wherein the nanoparticles are copper-palladium alloy nanoparticles, the size of the nanoparticles is 0.5 to 10 nm, and the mean residence time is 2 minutes to 8 minutes.