Synthesis of DNPH/SDS/Fe3O4 Nanoparticles for Removal of Cr (VI) Ions From Aqueous Solution

Abstract

In this study, sodium dodecyl sulfate (SDS) coated magnetite modified with 2, 4-Dinitrophenylhydrazine was used to remove Cr (VI) ions from aqueous solution. The modified magnetite nanoparticles were characterized by X-ray diffraction (XRD) analysis, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and SEM-EDXS measurement. The synthesized nanoparticles exhibited a high surface area of 75.5 m 2 g -1 and were of 20 -35 nm in particle size. The effects of parameters, including pH, dose of adsorbent, temperature and contact time were investigated to find the optimum adsorption conditions. Adsorption data fits well with the Langmuir isotherm model with a maximum adsorption capacity (qm) and a Langmuir adsorption equilibrium constant (b) of 169.5 mg g -1 and 0.168 L mg -1 , respectively. The adsorption kinetic agrees well with pseudo-second-order model.

Chemically Modified CaO/Fe3O4 Nanocomposite by Sodium Dodecyl Sulfate for Cr(III) Removal from Water

“…Among the surfactants, sodium dodecyl sulfate (SDS) reacts with the surface of magnetite nanoparticles and improves its surface characteristics to adsorb ions. The surface coating of these nanoparticles, using SDS, controls the accumulation of nanoparticles, proportionality in particle size, and increases the removal efficiency of heavy metals from wastewater [21].…”

Magnetic solid phase extraction of Sunitinib malate in urine samples assisted with mixed hemimicelle and spectrophotometric detection

“…More recently, MIONPs have been widely applied in analytical research as a flexible adsorbent for the extraction and determination of various chemical analytes [34][35][36][37][38][39] . The magnetic nanoparticles provide some advantages over the traditional sorbents, for instance, the high surface area, short diffusion route, high number of surfaceactive sites, and superparamagnetic features, which lead to the maximum extraction recovery, rapid extraction, and simplicity of extraction for samples with large volumes [40][41][42][43] . Nanoparticles are inconstant because of the high level of surface energy, which might end in the nanoparticles agglomeration and less yield of operation 44,45 .…”