Synthesis of Fe3O4/Humic Acid/Silver nanoparticles and their application in Cu and Cd adsorption

Authors : Fatos Ayca OZDEMİR OLGUN, Gozde Mediha KAMER, Birsen DEMİRATA OZTURK

Pages : 19-24

View : 16 | Download : 6

Publication Date : 2018-07-01

Article Type : Research Paper

Abstract :Nanoparticle technology developed rapidly due to the multifunctional utilization of nanoparticles in many disciplines such as medicine, drug delivery, environmental chemistry, food chemistry and analytical chemistry. In concept of this study, magnetic nanoparticles with a core-shell structure were synthesized and applied to the adsorption of copper and cadmium. The synthesis procedure consists of two steps. In the first step a core-shell structure was formed with Fe 3 O 4 and humic acid. In the second step, the coating of synthesized core/shell structure with silver occurs. The characterization of synthesized nanoparticles was performed with the aid of Scanning Electron Microscope insert ignore into journalissuearticles values(SEM); images combined with an elemental distribution image insert ignore into journalissuearticles values(EDX mapping);, Zeta Potential, and Dynamic Light Scattering insert ignore into journalissuearticles values(DLS); analyses. Adsorption isotherms of copper and cadmium on Fe 3 O 4 /HA/Ag multi-component structure were studied. The optimum adsorption conditions in aqueous solutions were fixed at pH 9 and at 300 K. As a result, the Fe 3 O 4 /HA/Ag multi-component structure showed excellent adsorption capacity for both copper and cadmium ions with removal percentages of 92% and 97% after the calculations were performed using the absorbance values measured by Flame Atomic Absorption Spectrometer insert ignore into journalissuearticles values(FAAS); respectively. Langmuir isotherm, which describes the monolayer adsorption was found to be the most adequate to fit the overall procedure. 
Keywords : Nanocomposites, magnetic nanoparticles, humic acid, metal removal, Langmuir isotherm