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Electrooxidation of Several Organic Compounds on Simply Prepared Metallic Nanoparticles: A Comparative Study
Author(s) -
Etesami Mohammad,
Mohamed Norita
Publication year - 2014
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201300056
Subject(s) - bimetallic strip , chemistry , catalysis , formic acid , formaldehyde , cyclic voltammetry , nanoparticle , metal , scanning electron microscope , nuclear chemistry , electrochemistry , graphite , inorganic chemistry , electrode , nanotechnology , organic chemistry , materials science , composite material
The electrooxidation of several fuel compounds was studied using metallic nanoparticles of Au, Pd, Pt, AuPd and AuPt synthesized by direct electrodeposition by applying a constant potential of ‐200 mV (vs. Ag/AgCl) to pencil graphite in an acidic medium. Scanning electron microscope (SEM) images and X‐ray diffraction (XRD) data show that monometallic (Au, Pd and Pt) and alloys of bimetallic nanoparticles of AuPd and AuPt have been formed. The catalytic performance of the prepared electrodes was investigated in a neutral medium (100 mM phosphate buffer, pH 7) by cyclic voltammetry. Amongst all fuels, the highest current densities were obtained by the electrooxidation of formic acid (ca. 9.8 mA cm −2 ) and formaldehyde (ca. 9.7 mA cm −2 ) on the AuPt catalyst.