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Journal of Analytical Methods in Chemistry
Volume 2017, Article ID 3012364, 8 pages
https://doi.org/10.1155/2017/3012364
Research Article

Synthesis, Characterization, and Adsorptive Properties of Fe3O4/GO Nanocomposites for Antimony Removal

1College of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
2College of Civil Engineering, Hunan University, Changsha 410082, China
3Key Laboratory of Building Safety and Energy Efficiency, Ministry of Education, Hunan University, Changsha 410082, China
4School of Science & Sport, University of the West of Scotland, Paisley PA1 2BE, UK

Correspondence should be addressed to Xiuzhen Yang; moc.qq@1966348

Received 28 February 2017; Revised 1 June 2017; Accepted 6 June 2017; Published 20 July 2017

Academic Editor: Ricardo Jorgensen Cassella

Copyright © 2017 Xiuzhen Yang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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), Fourier transform infrared spectrometer (FT-IR), and 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 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.