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Improving the oxidation resistance and stability of Ag nanoparticles by coating with multilayered reduced graphene oxide

  • Yahui Li
  • , Huayu Zhang*
  • , Bowen Wu
  • , Zhuo Guo
  • *Corresponding author for this work
  • Harbin Institute of Technology Shenzhen
  • Shenyang Institute of Chemical Technology

Research output: Contribution to journalArticlepeer-review

Abstract

A kind of coating nanostructure, Ag nanoparticles coated with multilayered reduced graphene oxide (RGO), is fabricated by employing a three-step reduction method in an orderly manner, which is significantly different from the conventional structures that are simply depositing or doping with Ag nanoparticles on RGO via chemical reduction. The as-prepared nanostructure is investigated by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), selected-area electronic diffraction (SEAD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). The results show that the obtained Ag/RGO nanostructure is observed to be a perfect coating structure with well dispersed Ag particles, which is responsible for the remarkable oxidation resistance. The results of XPS spectra indicate the content of metallic Ag is far greater than that of Ag oxides despite of prolonged exposure to the air, which fully demonstrate the excellent stability of thus coating nanostructure.

Original languageEnglish
Pages (from-to)194-200
Number of pages7
JournalApplied Surface Science
Volume425
DOIs
StatePublished - 15 Dec 2017
Externally publishedYes

Keywords

  • Nanocomposites
  • Reduced graphene oxide (RGO)
  • Silver nanoparticles
  • XPS

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