Edge gold-coated silver nanoprism [Ag@(Au nanoframe)] for H 20 2 detection

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

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

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 H 2O 2 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 H 2O 2 added into the reaction. Due to the changes to the optical spectra during etching, the nanoframe formation can be employed to detect H 2O 2 in a broad range of concentration down to 1 μM.

Original languageEnglish
Title of host publicationThird Asia Pacific Optical Sensors Conference
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event3rd Asia Pacific Optical Sensors Conference - Sydney, NSW, Australia
Duration: Jan 31 2012Feb 3 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8351
ISSN (Print)0277-786X

Conference

Conference3rd Asia Pacific Optical Sensors Conference
Country/TerritoryAustralia
CitySydney, NSW
Period1/31/122/3/12

ASJC Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Keywords

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

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