Sonochemically synthesized Ag nanoparticles as a SERS active substrate and effect of surfactant

Nitzan Dar, Kuang Yu Chen, Yung Tang Nien, Nina Perkas, Aharon Gedanken, In Gann Chen

研究成果: Article同行評審

7 引文 斯高帕斯(Scopus)

摘要

Abstract Surface enhanced Raman scattering (SERS) enables the detection of substances at low concentrations using silver or gold nanostructure. The SERS technique has many applications, such as environmental detection and biosensing. Sonochemistry is an excellent and cheap deposition technique for coating substrates in a form of nanostructure at ambient temperature. It can also be utilized to prepare large SERS substrates. Here, we used the advantages of sonochemistry to deposit solid SERS substrates immobilized on GaN nanostructure. Morphology was studied by scanning electron microscopy. The elemental composition and the spatial distribution were examined by energy dispersive X-ray spectroscopy. The crystal structure and atomic presence was confirmed by X-ray diffraction. SERS substrates were examined with the analytes crystal violet (10 -5 M) and rhodamine 6G (10 -6 M), they showed prominent characteristic peaks. We discovered that the SERS intensity of poly-vinyl-pyrrolidinone aided sonochemical deposition of Ag nanoparticles was increased. The reason for the effect is morphological changes of the Ag nanoparticles. Smaller nanoparticles were fabricated, which increase their SERS intensity.

原文English
文章編號29481
頁(從 - 到)219-224
頁數6
期刊Applied Surface Science
331
DOIs
出版狀態Published - 2015 三月 15

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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