Magnetic ZnO Crystal Nanoparticle Growth on Reduced Graphene Oxide for Enhanced Photocatalytic Performance under Visible Light Irradiation |
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| Authors: | Rania Elshypany Hanaa Selim K. Zakaria Ahmed H. Moustafa Sadeek A. Sadeek S.I. Sharaa Patrice Raynaud Amr A. Nada |
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| Affiliation: | 1.Department of Analysis and Evaluation, Egyptian Petroleum Research Institute, Nasr City, Cairo 11727, Egypt; (R.E.); (H.S.); (K.Z.); (S.I.S.);2.Department of Chemistry, Faculty of Science, Zagazig University, Zagazig 44519, Egypt; (A.H.M.); (S.A.S.);3.Laboratoire Plasma et Conversion d’Energie (LAPLACE), Université de Toulouse, CNRS, INPT, UPS, 31062 Toulouse, France; |
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| Abstract: | Magnetite zinc oxide (MZ) (Fe3O4/ZnO) with different ratios of reduced graphene oxide (rGO) was synthesized using the solid-state method. The structural and optical properties of the nanocomposites were analyzed using transmission electron microscopy (TEM), X-ray diffraction (XRD), Raman spectroscopy, Fourier-transform infrared spectroscopy (FTIR), ultraviolet–visible diffuse reflectance spectroscopy (UV–Vis/DRS), and photoluminescence (PL) spectrophotometry. In particular, the analyses show higher photocatalytic movement for crystalline nanocomposite (MZG) than MZ and ZnO nanoparticles. The photocatalytic degradation of methylene blue (MB) with crystalline ZnO for 1.5 h under visible light was 12%. By contrast, the photocatalytic activity for MZG was more than 98.5%. The superior photocatalytic activity of the crystalline nanocomposite was detected to be due to the synergistic effect between magnetite and zinc oxide in the presence of reduced graphene oxide. Moreover, the fabricated nanocomposite had high electron–hole stability. The crystalline nanocomposite was stable when the material was used several times. |
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| Keywords: | crystal magnetite ZnO reduced graphene oxide photocatalytic activity |
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