Fabrication of Highly Porous Polymeric Nanocomposite for the Removal of Radioactive U(VI) and Eu(III) Ions from Aqueous Solution

Abstract

In the present study, a polymeric nanocomposite, CoFe2O4@DHBF, was fabricated using 2,4 dihydroxybenzaldehyde and formaldehyde in basic medium with CoFe2O4 nanoparticles. The fabricated nanocomposite was characterized using FTIR, TGA, XRD, SEM, TEM, and XPS analyses. The analytical results revealed that the magnetic nanocomposite was fabricated successfully with high surface area 370.24 m2/g. The fabricated CoFe2O4@DHBF was used as an efficient adsorbent for the adsorption of U(VI) and Eu(III) ions from contaminated water. pH, initial concentration, adsorption time, and the temperature of the contaminated water solution affecting the adsorption ability of the nanocomposites were studied. The batch adsorption results exposed that the adsorption capacity for the removal of U(VI) and Eu(III) was found to be 237.5 and 225.5 mg/g. The adsorption kinetics support that both the metal ions follow second order adsorption kinetics. The adsorption isotherm well fits with the Langmuir adsorption isotherm and the correlation coefficient (R2) values were found to be 0.9920 and 0.9913 for the adsorption of U(VI) and Eu(III), respectively. It was noticed that the fabricated nanocomposites show excellent regeneration ability and about 220.1 and 211.3 mg/g adsorption capacity remains with U(VI) and Eu(III) under optimum conditions.

Molten salt synthesis of disordered spinel CoFe2O4 with improved electrochemical performance for sodium-ion batteries

“…These results support the presence of Fe 3+ in the inverse spinel CoFe 2 O 4 . 58 The two peaks at 529.42 and 532.31 eV in a single O 1s fine spectra (Fig. 4c) can be considered as the metal–O bond and consistent with oxygen in the defect, respectively.…”

“…56 In addition, the satellites peaks at 785.38 eV and 802.83 eV indicated the presence of unpaired 3d electron of the high spin Co 2+ . 57,58 In Fig. 4b exposed Fe 2p spectrum and displayed the Fe 2p 3/2 and Fe 2p 1/2 peaks at 710.54 and 723.58 eV, respectively.…”

Biosynthesis of ternary NiCoFe2O4 nanoflowers: investigating their 3D structure and potential use in gene delivery

“…Other peaks exhibiting strong binding energies correspond to the oxidation state of Co(II) [ 37 ]. The satellite peaks were detected at binding energy 786.19 eV, and 789.12 eV proved the presence of Co 2+ and oxidized Co species on surface, respectively [ 51 , 52 ]. Iron spectrum shows 3 main peaks and 9 satellite peaks (yellow band) (Fig.…”

Selective and Binary Adsorption of Anions onto Biochar and Modified Cellulose from Corn Stalks

“…However, chemical and biological processes are limited by possible secondary contamination, strict reaction conditions [10], highly contaminated residues, and low efficiency at trace concentrations [11]. Bio-adsorption processes have significant potential as technology for wastewater treatment because they are characterized by using economical and highly available bio-adsorbents that can be prepared from agro-industrial wastes [12]. Many of the natural adsorbents used for anion removal include inorganic materials, e.g., MgAl nanocomposites supported on activated carbon [1], sepiolite [13], chitosan-supported hybrid bio-composites [14], nanoscale materials [15], and Mg-Al-modified biochar [16], among others, as well as biomasses from different sources, which have been used directly or chemically modified [10,11], obtaining good adsorption capabilities.…”