Synthesis of Magnetic Fe3O4-Chitosan Nanoparticles by Ionic Gelation and Their Dye Removal Ability

Date

2015-05-01

Author

ŞAHBAZ, DENİZ AKIN
YAKAR, ARZU
Gündüz, Ufuk

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The aim of this study was to synthesize magnetic Fe3O4 chitosan nanoparticles (m-Fe3O4-CNs) by ionic gelation method and use them as adsorbent for the removal of Bromothymol Blue (BB) from aqueous solutions. Also, the effect of various parameters on the preparation of m-Fe3O4-CNs was investigated in this study. The nanoparticles were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), dynamic light scattering (DLS), Fourier transform infrared (FTIR) spectroscopy and vibrating sample magnetometry (VSM). Adsorption of BB on m-Fe3O4-CNs was studied in a batch reactor at different experimental conditions such as adsorbent dosage, pH, contact time, initial BB concentration and temperature. Kinetic behaviors, equilibrium isotherms and thermodynamics of the adsorption process were investigated in detail. The Langmuir adsorption isotherm model and pseudo-second-order kinetic model well fitted the adsorption experimental results. The thermodynamic parameters showed that the adsorption was a spontaneous, favorable and exothermic process in nature.

Subject Keywords

Ionic gelation, Magnetite, Chitosan, Nanoparticles, Bromothymol blue, Adsorption

URI

https://hdl.handle.net/11511/31984

Journal

WATER ENVIRONMENT RESEARCH

DOI

https://doi.org/10.2175/106143014x14062131178673

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

D. A. ŞAHBAZ, A. YAKAR, and U. Gündüz, “Synthesis of Magnetic Fe3O4-Chitosan Nanoparticles by Ionic Gelation and Their Dye Removal Ability,” WATER ENVIRONMENT RESEARCH, pp. 425–436, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31984.