期刊
TALANTA
卷 144, 期 -, 页码 1116-1124出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2015.07.089
关键词
Graphene; Magnetite; Magnetic solid-phase extraction; Synthesis; Characterization; Adsorption
资金
- National Natural Science Foundation of China [30901007]
- Scientific and Technological Project of Wuhan City of China [2013020501010171]
Three kinds of magnetite/reduced graphene oxide (MRGO) nanocomposites were prepared by solvothermal, hydrothermal and co-precipitation methods. The as-prepared nanocomposites were characterized and compared by Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction and zeta potential. The results showed that MRGO made by different methods differed in surface functional groups, crystal structure, particle sizes, surface morphology and surface charge. Due to their unlike features, these nanocomposites displayed dissimilar performances when they were used to adsorb drugs, dyes and metal ions. The MRGO prepared by the co-precipitation method showed special adsorption ability to negative ions, but those synthesized by the solvothermal method obtained the best extraction ability and reusability to the others and showed a good prospective in magnetic solid-phase extraction. Therefore, it is highly recommended to use the right preparation method before application in order to attain the best extraction performance. (C) 2015 Elsevier B.V. All rights reserved.
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