Synthesis of ultrathin face-centered-cubic Au@Pt and Au@Pd core-shell nanoplates from hexagonal-close-packed Au square sheets

Handle URI:
http://hdl.handle.net/10754/564108
Title:
Synthesis of ultrathin face-centered-cubic Au@Pt and Au@Pd core-shell nanoplates from hexagonal-close-packed Au square sheets
Authors:
Fan, Zhanxi; Zhu, Yihan; Huang, Xiao; Han, Yu ( 0000-0003-1462-1118 ) ; Wang, Qingxiao; Liu, Qing; Huang, Ying; Gan, Chee Lip; Zhang, Hua
Abstract:
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.
KAUST Department:
Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Advanced Nanofabrication, Imaging and Characterization Core Lab; Chemical Science Program; Core Labs; Nanostructured Functional Materials (NFM) laboratory
Publisher:
Wiley-Blackwell
Journal:
Angewandte Chemie International Edition
Issue Date:
17-Mar-2015
DOI:
10.1002/anie.201500993
Type:
Article
ISSN:
14337851
Sponsors:
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).
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Chemical Science Program

Full metadata record

DC FieldValue Language
dc.contributor.authorFan, Zhanxien
dc.contributor.authorZhu, Yihanen
dc.contributor.authorHuang, Xiaoen
dc.contributor.authorHan, Yuen
dc.contributor.authorWang, Qingxiaoen
dc.contributor.authorLiu, Qingen
dc.contributor.authorHuang, Yingen
dc.contributor.authorGan, Chee Lipen
dc.contributor.authorZhang, Huaen
dc.date.accessioned2015-08-03T12:32:28Zen
dc.date.available2015-08-03T12:32:28Zen
dc.date.issued2015-03-17en
dc.identifier.issn14337851en
dc.identifier.doi10.1002/anie.201500993en
dc.identifier.urihttp://hdl.handle.net/10754/564108en
dc.description.abstractThe 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.en
dc.description.sponsorshipThis 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).en
dc.publisherWiley-Blackwellen
dc.subjectelectron microscopyen
dc.subjectgolden
dc.subjectnanostructuresen
dc.subjectnoble metalsen
dc.subjectphase transformationen
dc.titleSynthesis of ultrathin face-centered-cubic Au@Pt and Au@Pd core-shell nanoplates from hexagonal-close-packed Au square sheetsen
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.contributor.departmentChemical Science Programen
dc.contributor.departmentCore Labsen
dc.contributor.departmentNanostructured Functional Materials (NFM) laboratoryen
dc.identifier.journalAngewandte Chemie International Editionen
dc.contributor.institutionSchool of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, Singaporeen
dc.contributor.institutionNanyang Technological University, Temasek Laboratories NTU, 9th Storey, BorderX Block, Singapore, Singaporeen
kaust.authorZhu, Yihanen
kaust.authorHan, Yuen
kaust.authorWang, Qingxiaoen
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.