Synthesis, characteristics, adsorption and catalytic behavior of NiO‐ZnO‐ CdO/reduced graphene oxide Nanocomposites

Abstract

AbstractThe nanocomposites NiO‐ZnO‐CdO/reduced graphene oxide (N‐Z‐C/rGO) were prepared using the reflux method. These nanocomposites were characterized using various techniques, including infrared spectroscopy (FTIR), Raman spectroscopy, scanning electron microscopy (SEM), electron dispersive spectroscopy (EDS), induced coupled plasma emission spectroscopy (ICP), and X‐ray diffraction (XRD). The application of the synthesized nanocomposites was investigated in two fields: the removal of azo dyes and the oxidation of certain organic compounds. To explore the use of this compound as an adsorbent, the removal of methylene blue (MB) and rhodamine B (RhB) dyes was studied. Under optimal conditions, the adsorbent absorbed MB with 98 % efficiency in 15 minutes and RhB with 96 % efficiency in 30 minutes. In the second part of the study, the performance of the nanocomposite in the oxidation of benzyl alcohol and styrene was examined. Optimal conditions for oxidizing benzyl alcohol used tert‐butyl hydroperoxide(TBHP) and acetonitrile, achieving 83 % efficiency and 92 % selectivity for benzoic acid in 6 hours. α‐methyl styrene oxidation used chloroform and TBHP, reaching 97 % efficiency and 90 % selectivity for acetophenone in 4 hours.