Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 11, Issue 6, Pages 1329-1332Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2009.05.005
Keywords
Dendrimers-encapsulated Pd nanoparticles; CNTs; Electrocatalysts; Hydrazine
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Funding
- NSF of China [20705020]
- China Postdoctoral Science Foundation and Shanghai Government [07dz22303]
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This study describes a facile method for preparing amine-terminated poly(amidoamine) (G4-NH2)-encapsulated palladium nanocatailysts with carbon nanotubes as a support. The Pd2+/G4-NH2 complexes are synthesized by a template approach in which PdCl42- ions are extracted into the interior of G4-NH2 dendrimers, and then bonded on multi-walled carbon nanotubes (MWNTs) support through dendrimer covalent linkage. Conversion of Pd2+/G4-NH2 into dendrimer-encapsulated nanoparticles was achieved by the addition of NaBH4. Transmission electron microscopy (TEM), X-ray diffraction (XRD), UV-vis spectroscopy confirmed that the size-monodisperse Pd nanoparticles anchored on MWNTs was about 2 nm in diameter. The obtained Pd/G4-NH2/MWNT nanocomposites exhibit high electro-catalytic activity for the hydrazine oxidation by cyclic voltammetry. (C) 2009 Elsevier B.V. All rights reserved.
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