Premium
The Effect of Lattice Strain on the Catalytic Properties of Pd Nanocrystals
Author(s) -
Kuo ChunHong,
Lamontagne Leo K.,
Brodsky Casey N.,
Chou LienYang,
Zhuang Jia,
Sneed Brian T.,
Sheehan Margaret K.,
Tsung ChiaKuang
Publication year - 2013
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201300447
Subject(s) - nanocrystal , nanoparticle , materials science , catalysis , chemical engineering , octahedron , bromide , crystal structure , crystallography , nanotechnology , inorganic chemistry , chemistry , organic chemistry , engineering
The effect of lattice strain on the catalytic properties of Pd nanoparticles is systematically studied. Synthetic strategies for the preparation of a series of shape‐controlled Pd nanocrystals with lattice strain generated from different sources has been developed. All of these nanocrystals were created with the same capping agent under similar reaction conditions. First, a series of Pd nanoparticles was synthesized that were enclosed in {111} surfaces: Single‐crystalline Pd octahedra, single‐crystalline AuPd core–shell octahedra, and twinned Pd icosahedra. Next, various {100}‐terminated particles were synthesized: Single‐crystalline Pd cubes and single‐crystalline AuPd core–shell cubes. Different extents of lattice strain were evident by comparing the X‐ray diffraction patterns of these particles. During electrocatalysis, decreased potentials for CO stripping and increased current densities for formic‐acid oxidation were observed for the strained nanoparticles. In the gas‐phase hydrogenation of ethylene, the activities of the strained nanoparticles were lower than those of the single‐crystalline Pd nanoparticles, perhaps owing to a larger amount of cetyl trimethylammonium bromide on the surface.