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Adsorptive Removal of Crystal violet (CV), a Carcinogenic Textile Dye, from Aqueous Solution by Conducting Polyaniline/ Hollow Manganese Ferrite Nanocomposites
Published: 20 October 2010 by MDPI in The 14th International Electronic Conference on Synthetic Organic Chemistry session Polymer Chemistry
Abstract: The conducting protonated polyaniline/ hollow MnFe2O4 nanocomposite was successfully synthesized in situ through self assembly polymerization. The core-shell of MnFe2O4 hollow spheres were fabricated by template polymerization, at first, the ferrite nanoparticles were synthesized as the shell and coated on the surface of functionalized polystyrene spheres as the core, subsequently, by calcination method the core polymer was removed. The ferrite nanoparticles were combined with PANI by assisting of dodecyl benzene sulfonic acid as doping agent under ultrasonic waves. The difference between the spectra of FT-IR for the ferrite nanoparticles-coated PS spheres and MnFe2O4 hollow spheres show the elimination of organic template after calcinations. The image of scanning electron microscopy (SEM) exhibit the ferrite spheres as nanoporous with size holes of 40 nm approximately. Also the magnetic properties of the nanocomposite and MnFe2O4 were characterized on a vibrant sample magnetometer (VSM) with maximum saturation magnetization values of 1.59 emu/g and 66.7 emu/g respectively. X-ray diffraction (XRD) pattern of the ferrite sample is well in agreement with the standard pattern of the cubic structure. Atomic force microscopy (AFM) was used for surface morphology analysis. UV–Visible absorption spectroscopy recorded the adsorption behavior of the solution after treatment with synthesized nanocomposite showing the adsorption capacity of Crystal violet dye.
Keywords: Polyaniline; Hollow ferrite; Surfactant; Adsorptive removal