Characterization of Pt@Cu Core@Shell Dendrimer-Encapsulated Nanoparticles Synthesized by Cu Underpotential Deposition
Dendrimer-encapsulated nanoparticles (DENs) containing averages of 55, 147, and 225 Pt atoms immobilized on glassy carbon electrodes served as the electroactive surface for the underpotential deposition (UPD) of a Cu monolayer. This results in formation of core@shell (Pt@Cu) DENs. Evidence for this conclusion comes from cyclic voltammetry, which shows that the Pt core DENs catalyze the hydrogen evolution reaction before Cu UPD, but that after Cu UPD this reaction is inhibited. Results obtained by in situ electrochemical X-ray absorption spectroscopy (XAS) confirm this finding.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE SC OFFICE OF SCIENCE (SC)
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 1041708
- Report Number(s):
- BNL-97386-2012-JA; LANGD5; TRN: US201212%%120
- Journal Information:
- Langmuir, Vol. 27, Issue 7; ISSN 0743-7463
- Country of Publication:
- United States
- Language:
- English
Similar Records
Synthesis and Characterization of Pt Dendrimer-Encapsulated Nanoparticles: Effect of the Template on Nanoparticle Formation
Effect of anions on the underpotential deposition of Cu on Pt(111) and Pt(100) surfaces
Electrochemical Cleaning Stability and Oxygen Reduction Reaction Activity of 1-2 nm Dendrimer-Encapsulated Au Nanoparticles
Journal Article
·
Tue Jan 01 00:00:00 EST 2008
· Chemistry of Materials
·
OSTI ID:1041708
+6 more
Effect of anions on the underpotential deposition of Cu on Pt(111) and Pt(100) surfaces
Journal Article
·
Mon Feb 01 00:00:00 EST 1993
· Langmuir
·
OSTI ID:1041708
Electrochemical Cleaning Stability and Oxygen Reduction Reaction Activity of 1-2 nm Dendrimer-Encapsulated Au Nanoparticles
Journal Article
·
Tue Jul 06 00:00:00 EDT 2021
· ChemElectroChem
·
OSTI ID:1041708
+3 more