@conference{
author = "Krstajić Pajić, Mila N. and Stevanović, Sanja I. and Radmilović, Vuk V. and Zabinski, Piotr and Elezović, Nevenka R. and Radmilović, Velimir R. and Gojković, Snežana Lj. and Jovanović, Vladislava M.",
year = "2019",
abstract = "Formic acid is one of the most promising small organic molecules that can be used as fuel in polymer
electrolyte fuel cells. These systems are recognized as high-efficiency energy conversion devices which could
offer energy generated from electrochemical processes. At carbon supported platinum nanoparticles as state
of the art anodic catalysts formic acid oxidation reaction (FAOR) proceeds through a dual path mechanism
that includes the formation of CO in the indirect reaction pathway. Since CO is a catalytic poison, the best
way to address this problem is to synthesize catalysts that would either provide prompt CO oxidation and
removal, or favour the direct reaction pathway to completely avoid CO formation and electrode poisoning.
PtAu systems are considered as efficient catalysts for FAOR due to the ensemble effect of Au on Pt, however
the optimal ratio of these two elements is still quite vague. Given the experience with water in oil
microemulsion synthesis for preparation of shape controlled Pt nanoparticles,1 bimetallic PtAu/C
nanocatalysts were synthesized by the same procedure, following a simultaneous precursor reduction
methodology.2 The amount of the capping agent used, was varied in order to cause formation of
nanoparticles with different shape (cubic or tetrahedron like). Addition of a very low, but very finely dispersed
amount of Au significantly increases the catalytic activity, and also affects kinetic of the particle growth,
influencing the particle shape. Ordered structure of these particles contributes to their stability as well. These
results were obtained by Electrochemical and High Resolution Transmission Electron Microscopy
characterization (HRTEM) with Energy Dispersive X-ray Spectroscopy (EDXS), along with X-Ray Diffraction and
(XRD) and X-Ray Photoelectron Spectroscopy (XPS).",
publisher = "International Association of Physical Chemists",
journal = "Book of Abstracts / 7th Regional Symposium on Electrochemistry – South East Europe & 8th Kurt Schwabe Symposium, Split, Croatia, May 27-30, 2019",
title = "Catalysis at nano level: Promoting Pt nanoparticle activity by Au decoration",
pages = "119",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7311"
}
