Simultaneous biosynthesis of reduced graphene oxide-Ag-Cu2O nanostructures by lichen extract for catalytic reduction of textile dyes

Ciplak Z., Getiren B., Gokalp C., Dincer C. A., Yildiz A., Yildiz N.

KOREAN JOURNAL OF CHEMICAL ENGINEERING, cilt.37, sa.12, ss.2216-2224, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 37 Sayı: 12
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1007/s11814-020-0640-0
  • Dergi Adı: KOREAN JOURNAL OF CHEMICAL ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core
  • Sayfa Sayıları: ss.2216-2224
  • Anahtar Kelimeler: Metal, Metal Oxide Nanostructures, Reduced Graphene Oxide (rGO), Cetraria islandica (L, ) Ach, Extract, Green Synthesis, Catalytic Reduction, GREEN SYNTHESIS, HIGH-PERFORMANCE, LEAF EXTRACT, NANOPARTICLES, NANOCOMPOSITE, 4-NITROPHENOL, AG, AU, DEGRADATION, FABRICATION
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

Metal/metal oxide nanostructures based reduced graphene oxide (LrGO-Ag, LrGO-Cu2O, LrGO-Ag-Cu2O) nanocomposites were obtained via green method using Cetraria islandica (L.) Ach. lichen extract. Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), scanning electron microscope energy-dispersive X-ray spectroscopy (SEM-EDX), ultraviolet-visible (UV-Vis) spectroscopy, X-ray diffraction (XRD) and X-ray photo-electron spectroscopy (XPS) were performed to analyze the prepared nanostructures. The results indicated that the nanocomposites were synthesized effectively and Ag-Cu2O nanoparticles with the mean diameter of 27 nm were well dispersed on the LrGO. The conversion of methylene blue (MB) to Leuco Methylene Blue (LMB) and 4-Nitrophenol (4-NP) to 4-Aminophenol (4-AP) was performed by biosynthesized catalysts in the presence of NaBH4. The reaction rate of LrGO-Ag-Cu2O nanocomposite during 4-NP and MB reduction was found as 0.0026 s(-1) and 0.0497 s(-1), respectively. The LrGO-Ag-Cu2O nanocomposite showed superior catalytic performance for the reduction of both textile dyes.