2025-08-19 九州大学
図. 超音波法のメカニズムとそれにより形成されたAu-Pt コア－シェルナノ粒子の高分解能EDSマップ
＜関連情報＞
- https://www.kyushu-u.ac.jp/ja/researches/view/1306
- https://www.kyushu-u.ac.jp/f/62997/25_0819_01.pdf
- https://www.nature.com/articles/s41598-025-09572-0
超音波処理による樹枝状Au-Ptコア－シェル型ナノ粒子の形成メカニズムの解明 Insights into the formation of Au@Pt dendritic core–shell nanoparticles with the aid of ultrasonication
Hu-Jun Lee,Daisuke Hanyu,Anh Thi Ngoc Dao & Kenji Kaneko
Scientific Reports Published:12 August 2025
DOI:https://doi.org/10.1038/s41598-025-09572-0
Abstract
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.
