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Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 56,
  • Issue 3,
  • pp. 300-305
  • (2002)

Simple Preparation Method for Silver SERS Substrate by Reduction of AgNO3 on Copper Foil

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Abstract

A simple new preparation method for silver surface-enhanced Raman scattering (SERS) substrate (Ag/Cu film) was developed by reduction of aqueous Ag<sup>+</sup> on copper foil, which is used for making print circuit board. The properties of the substrate were evaluated. The approximate limit of detection (LOD) was measured using 2,2′-bipyridine (bpy) and 1,1′-diethyl-trimethincyanine dye (TMC) as probing compounds. The LOD of bpy and TMC are 1 nanomole and 0.13 nanomole, respectively. The film-to-film reproducibility is comparable to the nitric acid etched silver foil SERS substrate. The surface morphology of the Ag/Cu film was observed by scanning electron micrography. The high SERS sensitivity of the film may be attributed to its special surface structure.

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