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Full Paper
TEM and HRTEM Evidence for the Role of Ligands in the Formation of Shape-Controlled Platinum Nanoparticles
Article first published online: 14 DEC 2010
DOI: 10.1002/smll.201001112
Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Axet, M. R., Philippot, K., Chaudret, B., Cabié, M., Giorgio, S. and Henry, C. R. (2011), TEM and HRTEM Evidence for the Role of Ligands in the Formation of Shape-Controlled Platinum Nanoparticles. Small, 7: 235–241. doi: 10.1002/smll.201001112
Publication History
- Issue published online: 7 JAN 2011
- Article first published online: 14 DEC 2010
- Manuscript Revised: 10 AUG 2010
- Manuscript Received: 30 JUN 2010
Keywords:
- platinum;
- nanoparticles;
- ligands;
- amine;
- crystal growth;
- shape control
Abstract
The morphology of platinum nanoparticles synthesized using an organometallic approach from PtMe2(C8H12) 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.