Open AccessComparisons of formic acid oxidation at supported Pt catalyst and at low-index Pt single crystal electrodes in sulfuric acid solution
Author(s) -
A.V. Tripković,
K.Dj. Popović,
Jelena Lović
Publication year - 2003
Publication title -
journal of the serbian chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.227
H-Index - 45
eISSN - 1820-7421
pISSN - 0352-5139
DOI - 10.2298/jsc0311849t
Subject(s) - formic acid , high resolution transmission electron microscopy , sulfuric acid , catalysis , single crystal , electrode , materials science , electrochemistry , particle (ecology) , crystal (programming language) , particle size , inorganic chemistry , chemistry , crystallography , transmission electron microscopy , nanotechnology , organic chemistry , geology , oceanography , computer science , programming language
The oxidation of formic acid was studied at supported Pt catalyst (47.5 wt%. Pt) and a low-index single crystal electrodes in sulfuric acid. The supported Pt catalyst was characterized by the TEM and HRTEM techniques. The mean Pt particle diameter, calculated from electrochemical measurements fits well with Pt particle size distribution determined by HRTEM. For the mean particle diameter the surface averaged distribution of low-index single crystal facets was established. Comparison of the activities obtained at Pt supported catalyst and low-index Pt single crystal electrodes revealed that Pt(111) plane is the most active in the potential region relevant for fuel cell applications.