Lee, Hu-Jun Hanyu, Daisuke Dao, Anh Thi Ngoc Kaneko, Kenji 2025-08-31T02:30:06Z 2025-08-31T02:30:06Z 2025-08-27 2025-08 https://pubs.kist.re.kr/handle/201004/153070 Bimetallic Au@Pt dendritic core-shell nanoparticles were synthesized via co-reduction with ultrasonication, and their nanostructures were characterized to gain insights into the formation mechanism of the Pt shell on the Au core. Two types of nanoparticles, one with ultrasonication and another without, were prepared and examined by scanning transmission electron microscopy to understand the role of ultrasonication. With or without ultrasonication, a thin layer of Pt shell was present on the Au core. The ultrasonication resulted in the Pt cluster formation from precursors, the Pt cluster dispersion, the Pt granule formation, and the Pt granule collision with the Au core. Consequently, Au@Pt nanoparticles were synthesized with the Pt dendritic shell consisting of Pt granules. These findings highlight the potential of ultrasonication in the controlled synthesis of nanoparticles with unique nanostructures. English Nature Publishing Group Insights into the formation of Au@Pt dendritic core-shell nanoparticles with the aid of ultrasonication Article 10.1038/s41598-025-09572-0 1 Scientific Reports, v.15, no.1 Scientific Reports 15 1 Y scie scopus 001550684600001 2-s2.0-105013219465 Multidisciplinary Sciences Science & Technology - Other Topics Article LIQUID ELECTROCATALYSIS OXYGEN REDUCTION BIMETALLIC NANODENDRITES ALLOY NANOPARTICLES MEDIATED SYNTHESIS FACILE SYNTHESIS PLATINUM PD NANOCRYSTALS Core-shell nanoparticle Ultrasonication Noble metal nanoparticle Transmission electron microscopy