Synthesis, characterization, and adsorptive properties of Fe3O4/GO nano-composites for antimony removal

Yang Xiuzhen, Zhou Tengzhi, Bozhi Ren, Shi Zhou, Andrew Hursthouse

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3 Citations (Scopus)

Abstract

A magnetic Fe3O4/GO composite with potential for rapid solid-liquid separation through a magnetic field was synthesized using GO (graphene oxide) and Fe3O4 (ferriferous oxide). Characterization of Fe3O4/GO used scanning electron microscope (SEM), X-ray diffractometer (XRD) and Fourier transform infrared spectrometer (FT-IR). Vibrating Sample Magnetometer (VSM). A number of factors such as pH, and coexisting ions on adsorbent dose were tested in a series of batch experiments. The results showed that GO and Fe3O4 are strongly integrated. For pH values in the range of 3.0~9.0, the removal efficiency of Sb(III) using the synthesized Fe3O4/GO remained high (95%). The adsorption showed good fit to a pseudo-second-order and Langmiur model, with the maximum adsorption capacity of 9.59 mg/g was maintained across pH 3.0-9.0. Thermodynamic parameters revealed that the adsorption process was spontaneous and endothermic. Analysis by X-ray photoelectron spectroscopy (XPS) showed that the adsorption process is accompanied by a redox reaction.
Original languageEnglish
Article number3012364
Number of pages8
JournalJournal of Analytical Methods in Chemistry
Volume2017
DOIs
Publication statusPublished - 20 Jul 2017

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Keywords

  • Ferriferous oxide
  • Graphene oxide
  • Magnetic separation
  • Adsorption;
  • Antimony

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