title: Synthesis of poly(acrylic acid) coated-Fe3O4 superparamagnetic nano-composites and their fast removal of dye from aqueous solution.
abstract: Poly(acrylic acid) (PAA) coated-Fe3O4 superparamagnetic nano-composites were synthesized through a solvothermal technique by using cheap and environmental friendly iron salts and PAA. Each nano-composite was composed of many small primary nanocrystals. The as-synthesized products were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), high resolution transmission electron microscopy (HRTEM), vibrating sample magnetometer (VSM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric-differential scanning calorimetry (TG-DSC) analysis and nitrogen adsorption-desorption measurements. These nano-composites showed rapid adsorption rate and super removal capacity of cation organic dye methylene blue (MB). Moreover, the MB desorption could be easily performed using methanol and acetic acid mixed solution. The reused performance of the nano-composites was also studied.
authors.affiliation: State Key Lab of CSBC, Micro-Nano Center and College of Materials Science and Technology, Hunan University, Changsha 410082, China.
authors.forename: Chunjiao
authors.initials: C
authors.lastname: Zhou
authors.forename: Wenjie
authors.initials: W
authors.lastname: Zhang
authors.forename: Mingxia
authors.initials: M
authors.lastname: Xia
authors.forename: Weichang
authors.initials: W
authors.lastname: Zhou
authors.forename: Qiang
authors.initials: Q
authors.lastname: Wan
authors.forename: Kun
authors.initials: K
authors.lastname: Peng
authors.forename: Bingsuo
authors.initials: B
authors.lastname: Zou
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D000327:Adsorption; D004396:Coloring Agents / Q000737:chemistry / Q000302:isolation & purification*; D058185:Magnetite Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008422:Materials Testing; D012996:Solutions; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D000180:Acrylic Resins; D004396:Coloring Agents; D058185:Magnetite Nanoparticles; D012996:Solutions; D014874:Water Pollutants, Chemical; C006903:carbopol 940