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Catalysis Science & Technology Vol - 2 Issue - 2

Catalysis Science & Technology Vol -1

Shape-dependent catalytic activity of palladium nanocrystals for the oxidation of carbon monoxide

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhao, Zhen He, Hong Dai, Hong-Xing Liu, Li-Cheng Wang, Rui
Copyright Year	2012
Abstract	It is of great interest to study the shape effect on the catalytic activity of metal nanocrystals, which exposed different crystallographic facets upon adopting various shapes. The investigations on shape-dependent catalysis of supported metal nanocrystals need to be conducted over nanocrystals with well-defined shapes and cleaned surface. The palladium nanocrystals with cubic, octahedral, and spherical morphologies were synthesized and well dispersed onto the inert silica support after removing the capping agents, which were used as the heterogeneous catalysts for carbon monoxide (CO) oxidation. It was found that the crystal facets of Pd nanoparticles played an essential role in determining the catalytic oxidation properties. As a result, the octahedral and spherical nanoparticles that predominantly exposed the Pd {111} crystal facets exhibited significantly better catalytic activity than the palladium nanocubes that possessed the Pd {100} crystal facets as the basal plane for the CO catalytic oxidation. It was inferred that the appropriate adsorption strength of CO molecules on Pd {111} planes was beneficial to the enhancement of the catalytic activity.
Starting Page	575
Ending Page	580
Page Count	6
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	2
Issue Number	3
Journal	Catalysis Science & Technology
DOI	10.1039/c2cy00417h
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Adsorption Carbon monoxide Silicon dioxide Crystal structure
Content Type	Text
Resource Type	Article
Subject	Catalysis

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