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Proceedings Paper

Edge gold-coated silver nanoprism [Ag@(Au nanoframe)] for H202 detection
Author(s): Mohammad M. Shahjamali; Erik Martinsson; Winston Marcello; Lisha Yin; Bo Liedberg; Freddy Boey; Can Xue
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Paper Abstract

In this paper we describe a facile method for synthesizing gold triangular nanoframe from edge gold-coated silver nanoprism [Ag@(Au nanoframe)] with controlled ridge thickness and interior hollow diameter via chemical etching of silver from the gold coated Ag nanoprism with Hydrogen peroxide. Our process involves two major steps: (1) Formation of Ag@(Au nanoframe) by deposition of gold on the edges of Ag nanoprisms in room temperature (2) Etching of Ag atoms from the gold fame via H2O2 oxidation. The optical properties of the resulting nanoframe can be easily tailored in a broad range by controlling the ridge thickness or hole diameter by amount of H2O2 added into the reaction. Due to the changes to the optical spectra during etching, the nanoframe formation can be employed to detect H2O2 in a broad range of concentration down to 1 μM.

Paper Details

Date Published: 30 January 2012
PDF: 5 pages
Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83511S (30 January 2012); doi: 10.1117/12.923550
Show Author Affiliations
Mohammad M. Shahjamali, Nanyang Technological Univ. (Singapore)
Erik Martinsson, Linkoping Univ. (Sweden)
Winston Marcello, Nanyang Technological Univ. (Singapore)
Lisha Yin, Nanyang Technological Univ. (Singapore)
Bo Liedberg, Linkoping Univ. (Sweden)
Freddy Boey, Nanyang Technological Univ. (Singapore)
Can Xue, Nanyang Technological Univ. (Singapore)

Published in SPIE Proceedings Vol. 8351:
Third Asia Pacific Optical Sensors Conference
John Canning; Gangding Peng, Editor(s)

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