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Surfactant-free sub-2 nm ultrathin triangular gold nanoframes.

Authors
  • Shahjamali, Mohammad Mehdi
  • Bosman, Michel
  • Cao, Shaowen
  • Huang, Xiao
  • Cao, Xiehong
  • Zhang, Hua
  • Pramana, Stevin Snellius
  • Xue, Can
Type
Published Article
Journal
Small
Publisher
Wiley (John Wiley & Sons)
Publication Date
Sep 09, 2013
Volume
9
Issue
17
Pages
2880–2886
Identifiers
DOI: 10.1002/smll.201300200
PMID: 23447112
Source
Medline
Keywords
License
Unknown

Abstract

Ultrathin triangular gold nanoframes are synthesized in high yield through selective gold deposition on the edges of triangular silver nanoprisms and subsequent silver etching with mild wet etchants. These ultrathin gold nanoframes are surfactant-free with tailorable ridge thickness from 1.8 to 6 nm and exhibit adjustable and distinct surface plasmon resonance bands in the visible and near-IR region. In comparison, etching of the nanoprism template by galvanic replacement can only create frame structures with much thicker ridges, which have much lower catalytic activity for 4-nitrophenol reduction than the ultrathin gold nanoframes.

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