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@ARTICLE{Polani:890165,
author = {Polani, Shlomi and Shviro, Meital and Shokhen, Victor and
Zysler, Melina and Glüsen, Andreas and Dunin-Borkowski,
Rafal and Carmo, Marcelo and Zitoun, David},
title = {{S}ize dependent oxygen reduction and methanol oxidation
reactions: catalytic activities of {P}t{C}u octahedral
nanocrystals},
journal = {Catalysis science $\&$ technology},
volume = {10},
number = {16},
issn = {2044-4761},
address = {London},
publisher = {RSC Publ.},
reportid = {FZJ-2021-00754},
pages = {5501 - 5512},
year = {2020},
abstract = {The synthetic control through colloidal synthesis led to a
remarkable increase in platinum mass activity in octahedral
nanocrystals with a Pt-rich surface. In this manuscript, we
demonstrate that the ratio of surfactant can tune the size
of Pt surface enriched PtCu nano-octahedra from 8 to 18 nm
with homogeneous size and shape on the carbon support. For
the nano-octahedra, the Pt-rich surface has been determined
by high-angle annular dark field scanning transmission
electron microscopy and energy-dispersive X-ray
spectroscopy. The Pt-rich surface exhibits an increasing
compressive strain with increasing surface of the {111}
facets. With increasing surface, the PtCu nano-octahedra
display higher oxygen reduction reaction (ORR) activity,
which however leads to higher onset over-potentials in the
methanol oxidation reaction (MOR) and CO-stripping. This
observed trend for a series of size-selected nano-octahedra
demonstrates the benefits of controlling the strained {111}
Pt surface for the ORR and MOR activity.},
cin = {IEK-14 / ER-C-1},
ddc = {540},
cid = {I:(DE-Juel1)IEK-14-20191129 / I:(DE-Juel1)ER-C-1-20170209},
pnm = {134 - Electrolysis and Hydrogen (POF3-134)},
pid = {G:(DE-HGF)POF3-134},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000560593800010},
doi = {10.1039/D0CY00772B},
url = {https://juser.fz-juelich.de/record/890165},
}