Removal of Cd2+ and Cu2+ ions from aqueous solution by using Fe–Fe3O4/graphene oxide as a novel and efficient adsorbent
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DOI: 10.1088/2053-1591/3/10/105603
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摘要: The nano Fe–Fe3O4/graphene oxide (GO) was successfully synthesized by the precipitation method and followed chemical reduction using FeCl3 as iron sources NaBH4 reducing agent. products were characterized x-ray diffraction (XRD), Fourier transform infrared spectroscopy, transmission electron microscopy (TEM), BET, photoelectron spectroscopy (XPS) VMS. From obtained XRD XPS results, it revealed formation of both Fe Fe3O4 particles on GO surface. TEM images showed that Fe3O4/GO Fe–Fe3O4/GO had small particle size 10–20 nm uniform distribution. used adsorbents for removal Cd2+ Cu2+ ions from aqueous solution. Maximum adsorption capacity (Q max) are 90.0 mg g−1 108.6 g−1, respectively. These values much higher compared to those well reported in literature. Additionally, this novel adsorbent can be reused washing with diluted Hcl solution easily recovered applying magnetic field. isotherm fits better Langmuir model Freundlich obeys pseudo-second order kinetic equation.
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