title: Synthesis of magnetic activated carbon/α-Fe2O3 nanocomposite and its application in the removal of acid yellow 17 dye from water.
abstract: The adsorption of acid yellow 17 dye on activated carbon/α-Fe2O3 nanocomposite prepared by simple pyrolytic method using iron(II) gluconate was investigated by batch technique. The composite was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), and vibrating sample magnetometry (VSM). The size of iron oxide nanoparticles formed from iron(II) gluconate precursor is in the range 5-17nm. The saturation magnetization (Ms), remanence (Mr) and coercivity (Hc) of the magnetic carbon nanocomposite is 5.6emu/g, 1.14emu/g and 448Oe, respectively. The adsorption data are found to fit well with Langmuir and, fairly well with Freundlich and Tempkin isotherms at higher concentration of dye (40-100mg/L). Kinetics data indicate that the adsorption of dye follows pseudo-second order kinetics model.
authors.affiliation: Department of Chemistry, Government College of Technology, Coimbatore 641013, Tamil Nadu, India.
authors.forename: V
authors.initials: V
authors.lastname: Ranjithkumar
authors.affiliation: Department of Chemistry, Government College of Technology, Coimbatore 641013, Tamil Nadu, India.
authors.forename: S
authors.initials: S
authors.lastname: Sangeetha
authors.affiliation: Department of Chemistry, Government College of Technology, Coimbatore 641013, Tamil Nadu, India. Electronic address: vamshen@yahoo.com.
authors.forename: S
authors.initials: S
authors.lastname: Vairam
mesh_terms: D000327:Adsorption; D001391:Azo Compounds / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D007700:Kinetics; D008956:Models, Chemical; D053761:Nanocomposites / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D005290:Ferric Compounds; D014874:Water Pollutants, Chemical; C000499:ferric oxide; D002244:Carbon
keywords: Adsorption; Composite materials; Magnetic properties; Nanostructures