Journal
CARBON
Volume 43, Issue 6, Pages 1259-1264Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2004.12.021
Keywords
carbon nanotubes; catalyst support; electrochemical properties
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Silver (Ag) nanoparticles were electrocrystallized on 4-aminobenzene monolayer-grafted multi-walled carbon nanotubes (MWNTs) by a potential-step method. The structure and nature of the resulting Ag/MWNT composite were characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD), the results show that the electrochemically synthesized Ag nanoparticles were homogeneously dispersed and well-separated from one another on the modified MWNT surfaces. The electrocatalytic properties of the Ag/MWNT electrode for oxidation of methanol in alkaline Solution have been investigated by cyclic voltammetry (CV), and excellent electrocatalytic activity was observed. This may be attributed to the small particle size of the silver particles. The results imply that the Ag/MWNT composites have a good application potential ill fuel cells. (c) 2005 Elsevier Ltd. All rights reserved.
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