Glycine-Mediated Syntheses
of Pt Concave
Nanocubes with High-Index {<i>hk</i>0} Facets and Their
Enhanced Electrocatalytic Activities
- Publication date
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Abstract
Metal nanocrystals with high-index facets (HIFs) have
drawn significant
attention for their superior catalysis activity compared to that of
low-index faces. However, because of the high surface energy of HIFs,
it is still challenging to preserve HIFs during the growth of nanocrystals.
In this study, highly selective Pt concave nanocubes (CNCs) with high-index
{<i>hk</i>0} facets have been successfully prepared in a
simple aqueous solution. The vital role of glycine as the surface
controller in the formation of CNCs was demonstrated. These Pt CNCs
exhibited enhanced specific activities toward the electro-oxidation
of methanol and formic acid in comparison to commercial Pt black and
Pt/C catalysts
