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TEM and HRTEM Evidence for the Role of Ligands in the Formation of Shape-Controlled Platinum Nanoparticles

✍ Scribed by M. Rosa Axet; Karine Philippot; Bruno Chaudret; Martiane Cabié; Suzanne Giorgio; Claude R. Henry

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
802 KB
Volume
7
Category
Article
ISSN
1613-6810

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✦ Synopsis

Abstract

The morphology of platinum nanoparticles synthesized using an organometallic approach from PtMe~2~(C~8~H~12~) is influenced by the nature of the ligands used as stabilizing agents. The use of long alkyl chain amines leads to the formation of multipodal nanoparticles that transform into compact nano‐objects, adopting cubic, truncated cubic, or cuboctahedral shapes. In contrast, the use of diamine ligands allows the growth of compact (111) arrowlike faces, forming polycrystalline nanoparticles of an overall desert‐rose aspect. Different reaction parameters are studied ([ligand]/[metal] ratio, temperature, solvent identity) in order to optimize the various shapes.

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