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Title: Pentatwinned Cu Nanowires with Ultrathin Diameters below 20 nm and Their Use as Templates for the Synthesis of Au-Based Nanotubes

Here, we report a one-pot method for the facile synthesis of Cu nanowires in high purity, together with ultrathin diameters well below 20 nm. Selected area electron diffraction and high-resolution transmission electron microscopy studies confirm that the Cu nanowires are grown along the <110> direction to give pentatwinned, one-dimensional nanostructures, enclosed by five {100} facets on the side surface. A systematic study further indicates that it is critical to conduct the synthesis under an argon atmosphere in order to improve the purity and uniformity of the nanowires while keeping their diameters thinner than 20 nm. Finally, we demonstrate the use of these nanowires as sacrificial templates for the synthesis of Au-based nanotubes through a galvanic replacement process.
Authors:
 [1] ;  [2] ;  [2] ;  [3] ;  [4] ;  [2] ;  [4] ;  [5] ;  [6]
  1. Georgia Inst. of Technology, Atlanta, GA (United States). Wallace H. Coulter Dept. of Biomedical Engineering; Wuhan Univ. (China). Key Lab. of Analytical Chemistry Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences
  2. Georgia Inst. of Technology, Atlanta, GA (United States). Wallace H. Coulter Dept. of Biomedical Engineering
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
  4. Georgia Inst. of Technology, Atlanta, GA (United States). School of Chemistry and Biochemistry, School of Chemical and Biomolecular Engineering
  5. Wuhan Univ. (China). Key Lab. of Analytical Chemistry Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences
  6. Georgia Inst. of Technology, Atlanta, GA (United States). Wallace H. Coulter Dept. of Biomedical Engineering; Georgia Inst. of Technology, Atlanta, GA (United States). School of Chemistry and Biochemistry, School of Chemical and Biomolecular Engineering
Publication Date:
Report Number(s):
BNL-114322-2017-JA
Journal ID: ISSN 2199-692X; R&D Project: MA015MACA; KC0201010
Grant/Contract Number:
SC0012704; DMR-1506018
Type:
Accepted Manuscript
Journal Name:
ChemNanoMat
Additional Journal Information:
Journal Volume: 3; Journal Issue: 3; Journal ID: ISSN 2199-692X
Publisher:
Wiley
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; argon protection; copper; hollow nanostructures; nanowires; reduction kinetics
OSTI Identifier:
1412645