title: Synthesis, characterization and adsorption properties of magnetite/reduced graphene oxide nanocomposites.
abstract: 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.
authors.affiliation: Key Laboratory of Environment Correlative Dietology (Ministry of Education), College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, China.
authors.forename: Tingting
authors.initials: T
authors.lastname: Qi
authors.affiliation: Key Laboratory of Environment Correlative Dietology (Ministry of Education), College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, China.
authors.forename: Chenchen
authors.initials: C
authors.lastname: Huang
authors.affiliation: Key Laboratory of Environment Correlative Dietology (Ministry of Education), College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, China.
authors.forename: Shan
authors.initials: S
authors.lastname: Yan
authors.affiliation: Key Laboratory of Environment Correlative Dietology (Ministry of Education), College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, China. Electronic address: lixj78@126.com.
authors.forename: Xiu-Juan
authors.initials: XJ
authors.lastname: Li
authors.affiliation: Key Laboratory of Environment Correlative Dietology (Ministry of Education), College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, China.
authors.forename: Si-Yi
authors.initials: SY
authors.lastname: Pan
mesh_terms: D000327:Adsorption; D060326:Chemistry Techniques, Synthetic; D004396:Coloring Agents / Q000737:chemistry; D005504:Food Analysis; D006108:Graphite / Q000737:chemistry*; D007700:Kinetics; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D019216:Metals, Heavy / Q000737:chemistry; D010087:Oxides / Q000737:chemistry*; D004364:Pharmaceutical Preparations / Q000737:chemistry
chemical_list: D004396:Coloring Agents; D058185:Magnetite Nanoparticles; D019216:Metals, Heavy; D010087:Oxides; D004364:Pharmaceutical Preparations; D006108:Graphite
keywords: Adsorption; Characterization; Graphene; Magnetic solid-phase extraction; Magnetite; Synthesis