Document Type
Journal Article
Department/Unit
Department of Chemistry
Title
Strong morphological effect of Mn3O4 nanocrystallites on the catalytic activity of Mn3O4 and Au/Mn3O4 in benzene combustion
Language
English
Abstract
Gold nanoparticles (3-4 nm) were deposited on Mn3O4 nanocrystallites with three distinct morphologies (cubic, hexagonal, and octahedral). The resulting structures were characterized, and their activities for benzene combustion were evaluated. The dominant exposed facets for the three kinds of Mn3O4 polyhedrons show the activity order: (103)≈(200)>(101). A similar activity order was derived for the interfaces between the Au and the Mn3O4 facet: Au/(200)≈Au/(103) >Au/(101). The metal-support interactions between the Au nanoclusters and specific facets of the Mn3O4 polyhedrons lead to a unique interfacial synergism in which the electronic modification of the Au nanoparticles and the morphology of the Mn3O4 substrate have a joint effect that is responsible for a significant enhancement in the catalytic activity of the Au/Mn3O4 system. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Keywords
benzene combustion, crystal facet, gold, manganese tetraoxide, morphology, nanostructures
Publication Date
2013
Source Publication Title
Chemistry - A European Journal
Volume
19
Issue
20
Start Page
6480
End Page
6487
Publisher
Wiley-VCH Verlag
DOI
10.1002/chem.201204112
Link to Publisher's Edition
ISSN (print)
09476539
ISSN (electronic)
15213765
Recommended Citation
Fei, Zhao-Yang, Bo Sun, Liang Zhao, Wei-Jie Ji, and Chak-Tong Au. "Strong morphological effect of Mn3O4 nanocrystallites on the catalytic activity of Mn3O4 and Au/Mn3O4 in benzene combustion." Chemistry - A European Journal 19.20 (2013): 6480-6487.