A Discovery of Strong Metal-Support Bonding in Nanoengineered Au-Fe3O4 Dumbbell-like Nanoparticles by in Situ Transmission Electron Microscopy.
Publication type: Journal Article
Publication date: 2017-07-06
scimago Q1
wos Q1
SJR: 2.967
CiteScore: 14.9
Impact factor: 9.1
ISSN: 15306984, 15306992
PubMed ID:
28650641
General Chemistry
Condensed Matter Physics
General Materials Science
Mechanical Engineering
Bioengineering
Abstract
The strength of metal-support bonding in heterogeneous catalysts determines their thermal stability, therefore, a tremendous amount of effort has been expended to understand metal-support interactions. Herein, we report the discovery of an anomalous "strong metal-support bonding" between gold nanoparticles and "nano-engineered" Fe3O4 substrates by in situ microscopy. During in situ vacuum annealing of Au-Fe3O4 dumbbell-like nanoparticles, synthesized by the epitaxial growth of nano-Fe3O4 on Au nanoparticles, the gold nanoparticles transform into the gold thin films and wet the surface of nano-Fe3O4, as the surface reduction of nano-Fe3O4 proceeds. This phenomenon results from a unique coupling of the size-and shape-dependent high surface reducibility of nano-Fe3O4 and the extremely strong adhesion between Au and the reduced Fe3O4. This strong metal-support bonding reveals the significance of controlling the metal oxide support size and morphology for optimizing metal-support bonding and ultimately for the development of improved catalysts and functional nanostructures.
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Total citations:
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(12%)
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GOST
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Han C. W. et al. A Discovery of Strong Metal-Support Bonding in Nanoengineered Au-Fe3O4 Dumbbell-like Nanoparticles by in Situ Transmission Electron Microscopy. // Nano Letters. 2017. Vol. 17. No. 8. pp. 4576-4582.
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Manto M., Sang X., Unocic R. R., Wang C. A Discovery of Strong Metal-Support Bonding in Nanoengineered Au-Fe3O4 Dumbbell-like Nanoparticles by in Situ Transmission Electron Microscopy. // Nano Letters. 2017. Vol. 17. No. 8. pp. 4576-4582.
Cite this
RIS
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TY - JOUR
DO - 10.1021/acs.nanolett.7b00827
UR - https://doi.org/10.1021/acs.nanolett.7b00827
TI - A Discovery of Strong Metal-Support Bonding in Nanoengineered Au-Fe3O4 Dumbbell-like Nanoparticles by in Situ Transmission Electron Microscopy.
T2 - Nano Letters
AU - Manto, Michael
AU - Sang, Xiahan
AU - Unocic, Raymond R.
AU - Wang, Chao
PY - 2017
DA - 2017/07/06
PB - American Chemical Society (ACS)
SP - 4576-4582
IS - 8
VL - 17
PMID - 28650641
SN - 1530-6984
SN - 1530-6992
ER -
Cite this
BibTex (up to 50 authors)
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@article{2017_Han,
author = {Michael Manto and Xiahan Sang and Raymond R. Unocic and Chao Wang},
title = {A Discovery of Strong Metal-Support Bonding in Nanoengineered Au-Fe3O4 Dumbbell-like Nanoparticles by in Situ Transmission Electron Microscopy.},
journal = {Nano Letters},
year = {2017},
volume = {17},
publisher = {American Chemical Society (ACS)},
month = {jul},
url = {https://doi.org/10.1021/acs.nanolett.7b00827},
number = {8},
pages = {4576--4582},
doi = {10.1021/acs.nanolett.7b00827}
}
Cite this
MLA
Copy
Han, C. W., et al. “A Discovery of Strong Metal-Support Bonding in Nanoengineered Au-Fe3O4 Dumbbell-like Nanoparticles by in Situ Transmission Electron Microscopy..” Nano Letters, vol. 17, no. 8, Jul. 2017, pp. 4576-4582. https://doi.org/10.1021/acs.nanolett.7b00827.