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Title: Facile synthesis of Pt-Pd alloy nanocages and Pt nanorings by templating with Pd nanoplates

Abstract

We report a facile method for the synthesis of Pt-Pd nanocages and Pt nanorings by conformally coating Pd nanoplates with Pt-based shells using polyol- and water-based protocols, respectively, followed by selective removal of the Pd cores. For the polyol-based system, Pd nanoplates were conformally coated with Pt-Pd alloy shells due to the use of a high reaction temperature of 200 °C and a slow injection rate for the Pt precursor. In comparison, Pt shells were formed on Pd nanoplates (with a larger thickness on the side face than on the top/bottom face) in the water-based system due to the use of a low reaction temperature of 80 °C and the presence of twin boundaries on the side face. As such, the Pd@Pt nanoplates prepared using the polyol- and water-based protocols evolved into Pt-Pd nanocages and Pt nanorings, respectively, when the Pd templates in the cores were selectively removed by wet etching. As a result, the wall thickness of the nanocages and the ridge thickness of the nanorings could be reduced down to 1.1 nm and 1.8 nm, respectively, without breaking the hollow structures.

Authors:
 [1];  [2];  [2];  [3];  [4];  [5];  [2]
+ Show Author Affiliations
  1. Georgia Inst. of Technology, Atlanta, GA (United States); Emory Univ., Atlanta, GA (United States); Xiamen Univ., Xiamen (People's Republic of China)
  2. Georgia Inst. of Technology, Atlanta, GA (United States); Emory Univ., Atlanta, GA (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Hitachi High-Tech. Canada, Toronto, ON (Canada)
  5. Xiamen Univ., Xiamen (People's Republic of China)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1326548
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
ChemNanoMat
Additional Journal Information:
Journal Name: ChemNanoMat; Journal ID: ISSN 2199-692X
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Wang, Xue, Luo, Ming, Huang, Hongwen, Chi, Miaofang, Howe, Jane, Xie, Zhaoxiong, and Xia, Younan. Facile synthesis of Pt-Pd alloy nanocages and Pt nanorings by templating with Pd nanoplates. United States: N. p., 2016. Web. doi:10.1002/cnma.201600238.
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Wang, Xue, Luo, Ming, Huang, Hongwen, Chi, Miaofang, Howe, Jane, Xie, Zhaoxiong, & Xia, Younan. Facile synthesis of Pt-Pd alloy nanocages and Pt nanorings by templating with Pd nanoplates. United States. https://doi.org/10.1002/cnma.201600238
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Wang, Xue, Luo, Ming, Huang, Hongwen, Chi, Miaofang, Howe, Jane, Xie, Zhaoxiong, and Xia, Younan. Tue . "Facile synthesis of Pt-Pd alloy nanocages and Pt nanorings by templating with Pd nanoplates". United States. https://doi.org/10.1002/cnma.201600238. https://www.osti.gov/servlets/purl/1326548.
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@article{osti_1326548,
title = {Facile synthesis of Pt-Pd alloy nanocages and Pt nanorings by templating with Pd nanoplates},
author = {Wang, Xue and Luo, Ming and Huang, Hongwen and Chi, Miaofang and Howe, Jane and Xie, Zhaoxiong and Xia, Younan},
abstractNote = {We report a facile method for the synthesis of Pt-Pd nanocages and Pt nanorings by conformally coating Pd nanoplates with Pt-based shells using polyol- and water-based protocols, respectively, followed by selective removal of the Pd cores. For the polyol-based system, Pd nanoplates were conformally coated with Pt-Pd alloy shells due to the use of a high reaction temperature of 200 °C and a slow injection rate for the Pt precursor. In comparison, Pt shells were formed on Pd nanoplates (with a larger thickness on the side face than on the top/bottom face) in the water-based system due to the use of a low reaction temperature of 80 °C and the presence of twin boundaries on the side face. As such, the Pd@Pt nanoplates prepared using the polyol- and water-based protocols evolved into Pt-Pd nanocages and Pt nanorings, respectively, when the Pd templates in the cores were selectively removed by wet etching. As a result, the wall thickness of the nanocages and the ridge thickness of the nanorings could be reduced down to 1.1 nm and 1.8 nm, respectively, without breaking the hollow structures.},
doi = {10.1002/cnma.201600238},
journal = {ChemNanoMat},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 06 00:00:00 EDT 2016},
month = {Tue Sep 06 00:00:00 EDT 2016}
}
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https://doi.org/10.1002/cnma.201600238
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    Works referencing / citing this record:

    Shape‐Controlled Synthesis of Colloidal Metal Nanocrystals by Replicating the Surface Atomic Structure on the Seed
    journal, April 2018

    Hollow Metal Nanocrystals with Ultrathin, Porous Walls and Well-Controlled Surface Structures
    journal, July 2018

    Toward affordable and sustainable use of precious metals in catalysis and nanomedicine
    journal, November 2018

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