Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 9, Issue 12, Pages 2838-2842Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2007.10.007
Keywords
Pt nanoparticles; hydrotalcite-like compounds; electrodeposition; sensors; ethanol and glucose oxidation
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Two different substrates, GC and graphite electrodes, have been coated with electrodeposited Pt nanoparticles (PtNPs) of different morphologies and sizes (from 2 mu m to 20 nm). The electrochemical behavior of the platinised GC electrodes has been mainly evaluated in terms of the increase of the real surface area. A nickel-based hydrotalcite-like compound (HT) has been electrosynthesised on the GC platinised electrodes, by the cathodic reduction of a 0.03 M Ni and Al nitrates solution, and the cyclic voltammetric responses to these electrodes have been measured in a 0.1 M NaOH solution. Finally, the electrocatalytic performances of the GC-PtNPs-HT electrodes to ethanol and glucose have been investigated and compared with the performances of HT electrodeposited onto bare Pt, in the same conditions. (C) 2007 Elsevier B.V. All rights reserved.
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