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Kinetically Controlled Growth of Polyhedral Bimetallic Alloy Nanocrystals Exclusively Bound by High‐Index Facets: Au–Pd Hexoctahedra
Author(s) -
Lee Young Wook,
Kim Dongheun,
Hong Jong Wook,
Kang Shin Wook,
Lee Sang Bok,
Han Sang Woo
Publication year - 2013
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201201813
Subject(s) - bimetallic strip , nanocrystal , alloy , materials science , catalysis , chemical engineering , metal , kinetics , ion , morphology (biology) , ethanol , nanotechnology , crystallography , chemistry , metallurgy , organic chemistry , physics , engineering , quantum mechanics , biology , genetics
Au–Pd alloy nanocrystals (NCs) with a hexoctahedral structure , enclosed exclusively by high‐index {541} facets, are prepared via the simultaneous reduction of Au and Pd precursors without added seeds or additional metal ions as structure‐regulating agents. Manipulating the NC growth kinetics via control of the relative amount of reductant is the key synthetic lever for controlling the morphology of the Au–Pd NCs. The hexoctahedral Au–Pd NCs exhibit higher catalytic performance toward the electro‐oxidation of ethanol than low‐index‐faceted Au–Pd NCs.