In Situ X-ray Absorption Analysis of ~1.8 nm Dendrimer-Encapsulated Platinum Nanoparticles During Electrochemical CO Oxidation
We report an in situ X-ray absorption-fine structure (XAFS) spectroscopic analysis of {approx}1.8 nm Pt dendrimer-encapsulated nanoparticles (DENs) during electrocatalytic oxidation of CO. The results indicate that Pt nanoparticles encapsulated within poly(amidoamine) (PAMAM) dendrimers and immobilized on a carbon electrode retain their electrocatalytic activity and are structurally stable for extended periods during CO oxidation. This is a significant finding, because nanoparticles in this size range are good experimental models for comparison to first-principles calculations if they remain stable.
- Research Organization:
- Brookhaven National Laboratory (BNL) National Synchrotron Light Source
- Sponsoring Organization:
- DOE - OFFICE OF SCIENCE
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 1020088
- Report Number(s):
- BNL--95937-2011-JA
- Journal Information:
- ChemPhysChem, Journal Name: ChemPhysChem Journal Issue: 13 Vol. 11; ISSN CPCHFT; ISSN 1439-4235
- Country of Publication:
- United States
- Language:
- English
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