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      Surfactant-free sub-2 nm ultrathin triangular gold nanoframes

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      Author
      Mohammad Mehdi Shahjamali
      Bosman, Michel
      Cao, Shao-Wen
      Huang, Xiao
      Cao, Xiehong
      Zhang, Hua
      Pramana, Stevin Snellius
      Xue, Can
      Date of Issue
      2013
      School
      School of Materials Science and Engineering
      Related Organization
      Institute of Materials Research and Engineering, An*STAR
      Abstract
      Ultrathin triangular gold nanoframes were 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 via 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.
      Subject
      DRNTU::Engineering::Materials::Nanostructured materials
      Type
      Journal Article
      Series/Journal Title
      Small
      Rights
      © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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      • MSE Journal Articles
      http://dx.doi.org/10.1002/smll.201300200
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