Effect of sulphidation process on the structure, morphology and optical properties of GO/AgNWs composites

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Baghirov M. B., Muradov M., Eyvazova G., AZIZIAN-KALANDARAGH Y., Mammadyarova S., Kim J., ...Daha Fazla

RSC Advances, cilt.14, sa.4, ss.2320-2326, 2024 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 14 Sayı: 4
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1039/d3ra08044g
  • Dergi Adı: RSC Advances
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Biotechnology Research Abstracts, Chemical Abstracts Core, Compendex, Metadex, Directory of Open Access Journals
  • Sayfa Sayıları: ss.2320-2326
  • Gazi Üniversitesi Adresli: Evet

Özet

In this study, composite materials composed of graphene oxide (GO) synthesized by a modified Hummers' method and silver nanowires (AgNWs) synthesized by a modified polyol method were prepared. The prepared composites were subjected to sulfidation under the influence of H2S gas. Structural changes in the samples were evaluated using X-ray diffraction (XRD). The binding nature of the composite was characterized using FT-IR spectroscopy. Optical properties and band gap values were investigated using ultraviolet-visible (UV-Vis) spectroscopy. The morphology of the composites was analyzed by transmission electron microscopy (TEM). A simple method using H2S gas was applied for the sulphidation process of the samples. The sulfidation process was successful under the influence of H2S gas, resulting in an increased distance between the GO layers and a decrease in the band gap value for the composite post-sulfidation. In addition, AgNWs were observed to decompose into Ag2S nanoparticles under the influence of H2S gas. It was determined that the value of the band gap of the sample changes because of sulphidation.