Web Release Date: February 28,
Understanding the Role of Nanoparticle Synthesis on Their Underlying Electrocatalytic Activity
and
Schlumberger Cambridge Research, High Cross, Madingley Road, Cambridge, CB3 0EL, United Kingdom, Schlumberger-Doll Research, 1 Hampshire Street, Cambridge, Massachusetts 02139, and Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, United Kingdom
Received: October 17, 2007
In Final Form: January 3, 2008
Abstract:
Au/Pt bimetallic nanoparticles with controllable structure were fabricated and extensively characterized by transmission electron microscopy, scanning electron microscopy, energy dispersive X-ray analysis, high-resolution TEM, powder X-ray diffraction, UV-visible absorption spectroscopy and cyclic voltammetry. Their catalytic activity has been studied and compared with different Pt nanoparticles in both the electrochemical reduction of oxygen and the oxidation of methanol to investigate the role of nanoparticle synthesis on their underlying electrocatalytic activity. Enhanced signals for methanol oxidation were observed at the Au/Pt bimetallic nanoparticles.
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