TY - JOUR
T1 - Crystalline order of silver-gold nanocatalysts with hollow-core and alloyed-shell
AU - Ferrer, Domingo A.
AU - Diaz-Torres, Luis A.
AU - Wu, Shaomin
AU - Jose-Yacaman, Miguel
N1 - Funding Information:
The authors thank the Center for Nano and Molecular Science and Technology, the Texas Materials Institute, and the International Center for Nanotechnology and Advanced Materials in The University of Texas at Austin. We also thank the support from the Welch Foundation and the NSF Grant DMR-0602587: “Alloys at the Nanoscale: The case of Nanoparticles”.
PY - 2009/10/15
Y1 - 2009/10/15
N2 - This paper reports the internal structure of Ag-Au bimetallic nanoparticles with hollow interiors and alloyed shells, synthesized by chemical reduction of metallic precursor and subsequent galvanic replacement reaction. By taking advantage of advanced electron microscopy methods such as high-resolution transmission electron microscopy (HRTEM), scanning TEM (STEM), weak beam dark-field (WBDF) microscopy, X-ray energy dispersive spectroscopy (EDS) and nano-beam electron diffraction (NBD), sufficient and necessary evidences confirm the sacrificial role of silver nanoparticles as templates for the epitaxial deposition of gold-rich atomic layers.
AB - This paper reports the internal structure of Ag-Au bimetallic nanoparticles with hollow interiors and alloyed shells, synthesized by chemical reduction of metallic precursor and subsequent galvanic replacement reaction. By taking advantage of advanced electron microscopy methods such as high-resolution transmission electron microscopy (HRTEM), scanning TEM (STEM), weak beam dark-field (WBDF) microscopy, X-ray energy dispersive spectroscopy (EDS) and nano-beam electron diffraction (NBD), sufficient and necessary evidences confirm the sacrificial role of silver nanoparticles as templates for the epitaxial deposition of gold-rich atomic layers.
KW - Bimetallic nanoparticles
KW - Gold
KW - Silver
KW - Transmission electron microscopy
KW - Weak-beam dark field
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U2 - 10.1016/j.cattod.2009.02.047
DO - 10.1016/j.cattod.2009.02.047
M3 - Article
AN - SCOPUS:69949104462
SN - 0920-5861
VL - 147
SP - 211
EP - 216
JO - Catalysis Today
JF - Catalysis Today
IS - 3-4
ER -