Synthesis of platinum multipods: an induced anisotropic growth.
This paper reports a highly effective synthesis of platinum multipods from platinum 2,4-pentanedionate in organic solvents. A trace amount of silver acetylacetonate is used to trigger the nucleation and the anisotropic growth of Pt nanocrystals. The morphologies of Pt multipods made include I- and V-shaped bipods, various types of tripods, and planar and three-dimensional (3D) tetrapods. The 3D Pt tetrapods can be well-defined, resembling those observed for II-VI semiconducting materials, such as CdS and CdSe. Control of morphology and the multipod-to-sphere transitions under various conditions have been systematically studied. A mode of formation based on the induced kinetically controlled growth has been discussed.
Teng
Xiaowei
X
Department of Chemical Engineering and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627, USA.
Yang
Hong
H
D003460:Crystallization / Q000379:methods*; D008422:Materials Testing; D049329:Nanostructures / Q000032:analysis / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D010984:Platinum / Q000032:analysis* / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature
D010984:Platinum