US 12,077,448 B2
Ceria nanoparticles and ceria nanoparticles preparation method
Jaeyun Kim, Suwon-si (KR); and Seung Woo Choi, Suwon-si (KR)
Assigned to Research & Business Foundation Sungkyunkwan University, Suwon-si (KR)
Filed by RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY, Suwon-si (KR)
Filed on Oct. 15, 2021, as Appl. No. 17/502,257.
Claims priority of application No. 10-2020-0134388 (KR), filed on Oct. 16, 2020.
Prior Publication US 2022/0119270 A1, Apr. 21, 2022
Int. Cl. C01F 17/235 (2020.01); B82Y 40/00 (2011.01)
CPC C01F 17/235 (2020.01) [B82Y 40/00 (2013.01); C01P 2004/04 (2013.01); C01P 2004/62 (2013.01); C01P 2004/64 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A ceria nanoparticles preparation method, comprising:
preparing a cerium precursor dissolved in distilled water,
preparing an imidazole or an imidazole derivative dissolved in distilled water;
preparing ceria nanoparticles by stirring a mixed solution containing the cerium precursor and the imidazole, or a mixture solution containing the cerium precursor and the imidazol derivative; and
washing the ceria nanoparticles one or more times by using a solution selected from the group consisting of acetone, isopropanol, n-propanol, 1-methyl-2-pyrrolidone, and combinations thereof,
wherein the ceria nanoparticles preparation method is performed at room temperature, and
wherein the ceria nanoparticles have an average particle diameter of 3 to 5 nm.