Bio-green synthesis of Ag-GO, Au-GO and Ag-Au-GO nanocomposites using Azadirachta indica: Its application in SERS and cell viability

K. Hareesh, J. F. Williams, N. A. Dhole, K. M. Kodam, V. N. Bhoraskar, S. D. Dhole

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

Silver-graphene oxide, Gold-graphene oxide, Silver-Gold-graphene oxide nanocomposites were synthesized from Neem leaves (Azadirachta indica) extract using a bio-green one-pot method. The synthesized bio-green nanocomposites were characterized by UV-visible spectroscopy, x-ray diffractogram, transmission electron microscopy, x-ray photoelectron spectroscopy and Raman spectroscopy. The results indicated the decoration of ∼10 nm of silver, ∼20 nm of gold and ∼15 nm of silver-gold nanoparticles on a graphene oxide sheet. The synthesized nano composites showed enhancement in surface enhanced Raman spectroscopy with alizarin and also enhancement in cell viability of Chang liver cell lines which may be due to a synergetic effect of nanoparticles and graphene oxide.

Original languageEnglish
Article number075010
JournalMaterials Research Express
Volume3
Issue number7
DOIs
Publication statusPublished - 07-2016

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Metals and Alloys

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