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Synthesis of Ultrathin Face‐Centered‐Cubic Au@Pt and Au@Pd Core–Shell Nanoplates from Hexagonal‐Close‐Packed Au Square Sheets
Author(s) -
Fan Zhanxi,
Zhu Yihan,
Huang Xiao,
Han Yu,
Wang Qingxiao,
Liu Qing,
Huang Ying,
Gan Chee Lip,
Zhang Hua
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201500993
Subject(s) - bimetallic strip , materials science , epitaxy , cubic crystal system , hexagonal crystal system , crystallography , square (algebra) , nanotechnology , shell (structure) , nanostructure , close packing of equal spheres , phase (matter) , layer (electronics) , chemistry , metallurgy , metal , geometry , composite material , mathematics , organic chemistry
The synthesis of ultrathin face‐centered‐cubic (fcc) Au@Pt rhombic nanoplates is reported through the epitaxial growth of Pt on hexagonal‐close‐packed (hcp) Au square sheets (AuSSs). The Pt‐layer growth results in a hcp‐to‐fcc phase transformation of the AuSSs under ambient conditions. Interestingly, the obtained fcc Au@Pt rhombic nanoplates demonstrate a unique (101) f orientation with the same atomic arrangement extending from the Au core to the Pt shell. Importantly, this method can be extended to the epitaxial growth of Pd on hcp AuSSs, resulting in the unprecedented formation of fcc Au@Pd rhombic nanoplates with (101) f orientation. Additionally, a small amount of fcc (100) f ‐oriented Au@Pt and Au@Pd square nanoplates are obtained with the Au@Pt and Au@Pd rhombic nanoplates, respectively. We believe that these findings will shed new light on the synthesis of novel noble bimetallic nanostructures.