Synthesis of ultrathin face-centered-cubic Au@Pt and Au@Pd core-shell nanoplates from hexagonal-close-packed Au square sheets
Type
ArticleAuthors
Fan, ZhanxiZhu, Yihan
Huang, Xiao
Han, Yu

Wang, Qingxiao
Liu, Qing
Huang, Ying
Gan, Chee Lip
Zhang, Hua

KAUST Department
Advanced Membranes and Porous Materials Research CenterAdvanced Nanofabrication, Imaging and Characterization Core Lab
Chemical Science Program
Core Labs
Electron Microscopy
Imaging and Characterization Core Lab
Nanostructured Functional Materials (NFM) laboratory
Physical Science and Engineering (PSE) Division
Date
2015-03-17Online Publication Date
2015-03-17Print Publication Date
2015-05-04Permanent link to this record
http://hdl.handle.net/10754/564108
Metadata
Show full item recordAbstract
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. Phase change: Ultrathin Au@Pt and Au@Pd core-shell nanoplates were prepared from Au square sheets. A phase transformation from hexagonal close-packed (hcp) to face-centered cubic (fcc) is observed upon coating the hcp Au square sheets with Pt or Pd under ambient conditions. The prepared fcc Au@Pt and Au@Pd rhombic nanoplates demonstrate unique (101)f orientation (picture shows a typical fcc Au@Pt rhombic nanoplate). © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.Citation
Fan, Z., Zhu, Y., Huang, X., Han, Y., Wang, Q., Liu, Q., … Zhang, H. (2015). Synthesis of Ultrathin Face-Centered-Cubic Au@Pt and Au@Pd Core-Shell Nanoplates from Hexagonal-Close-Packed Au Square Sheets. Angewandte Chemie International Edition, 54(19), 5672–5676. doi:10.1002/anie.201500993Sponsors
This work was supported by MOE under AcRF Tier 2 (ARC 26/13, No. MOE2013-T2-1-034), AcRF Tier 1 (RG 61/12, RGT18/13, and RG5/13), and Start-Up Grant (M4080865.070.706022).Publisher
WileyJournal
Angewandte Chemieae974a485f413a2113503eed53cd6c53
10.1002/anie.201500993