Facile fabrication of a silver dendrite-integrated chip for surface-enhanced Raman scattering

  • Hai Xin Gu
  • , Lin Xue
  • , Yong Feng Zhang
  • , Da Wei Li
  • , Yi Tao Long*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

55 Scopus citations

Abstract

A facile approach to fabricating a surface-enhanced Raman scattering (SERS)-active chip by integrating silver dendrites with copper substrate through a one-step process was explored. The structures of dendrites were synthesized and controlled by an AgNO3/PVP aqueous system, and the fabrication parameters amount of AgNO3/PVP and reaction time were systematically investigated. The optimized silver dendrites, closely aggregated on the surface of the copper chip, exhibited high SERS activity for detecting rhodamine 6G at a concentration as low as 3.2 × 10-11 M. Meanwhile, the prepared SERS-active chip displayed a high thermal stability and good reproducibility. Moreover, the potential application for analysis of polycyclic aromatic hydrocarbons was demonstrated by detection of fluoranthene at a low concentration of 4.5 × 10-10 M. This SERS-active chip prepared by the convenient and high-yield method would be a promising means for rapid detection under field conditions.

Original languageEnglish
Pages (from-to)2931-2936
Number of pages6
JournalACS Applied Materials and Interfaces
Volume7
Issue number4
DOIs
StatePublished - 4 Feb 2015
Externally publishedYes

Keywords

  • SERS
  • copper substrate
  • detection chip
  • silver dendrites

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