Surfactant-free sub-2 nm ultrathin triangular gold nanoframes
Author
Mohammad Mehdi Shahjamali
Bosman, Michel
Cao, Shao-Wen
Huang, Xiao
Cao, Xiehong
Zhang, Hua
Pramana, Stevin Snellius
Xue, Can
Date of Issue
2013School
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
Collections
http://dx.doi.org/10.1002/smll.201300200
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