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Edge gold-coated silver nanoprism [Ag@(Au nanoframe)] for H202 detection

  • Mohammad M. Shahjamali
  • , Erik Martinsson
  • , Winston Marcello
  • , Lisha Yin
  • , Bo Liedberg
  • , Freddy Boey
  • , Can Xue

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

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. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
Original languageEnglish
Title of host publicationThird Asia Pacific Optical Sensors Conference
EditorsJohn Canning, Gang-Ding Peng
PublisherSPIE
ISBN (Print)9780819490278
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event3rd Asia Pacific Optical Sensors Conference (APOS 2012) - Sydney, NSW, Australia
Duration: 31 Jan 20123 Feb 2012

Publication series

NameProceedings of SPIE
Volume8351
ISSN (Print)0277-786X

Conference

Conference3rd Asia Pacific Optical Sensors Conference (APOS 2012)
PlaceAustralia
CitySydney, NSW
Period31/01/123/02/12

Research Keywords

  • chemical etching
  • gold hollow nanostructure
  • H 2O 2 detection
  • silver nanoprism
  • surface plasmon
  • triangular nanoframe

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