Surface modified magnetic Fe3O4 nanoparticles as a selective sorbent for solid phase extraction of uranyl ions from water samples

Sadeghi, Susan; Azhdari, Hoda; Arabi, Hadi; Moghaddam, Ali Zeraatkar

doi:10.1016/j.jhazmat.2012.02.054

Cited by 204 publications

(55 citation statements)

References 41 publications

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“…Figure 1(c) illustrates that the particle size of Fe3O4-MNPs-SiO2-1,8ODA was within the range 10.5 -15.8 nm. 19 Finally, the particle size of Fe3O4-SiO2-1,8ODA-3FSA was within the range 11.4 -14.7 nm (Fig. 1(d)).…”

Section: Characterization Studies (Tem X-ray and Ft-ir Spectral Analmentioning

confidence: 78%

New Trend for Acceleration Solid Phase Extraction Process Based on Using Magnetic Nano-adsorbents along with Surface Functionalization through Microwave Assisted Solvent-free Technique

Ahmed

Soliman

2015

ANAL. SCI.

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The use of a microwave assisted solvent-free technique for silica coating of iron magnetic nanoparticles (Fe3O4-MNPs) and their functionalization with three aliphatic diamines: 1,2-ethylenediamine (1,2EDA), 1,5-pentanediamine (1,5PDA) and 1.8-octanediamine (1,8-ODA), were successfully achieved in a very short time. Only 60 min were needed for the nano-adsorbent modification as compared with more than 1000 min using conventional methods under reflux conditions. Their surface characteristics (observed by TEM, XRD and FT-IR), in addition to Cu(II) adsorption capacities (1.805, 1.928 and 2.116 mmol g -1 ) and time of equilibration (5 s) were almost the same. Thus, the time required to accomplish the solid phase extraction process is greatly reduced. On the other hand, the phenomenon of the fast equilibration kinetics was successfully extended on using the functionalized aliphatic diamines magnetic nano-adsorbents as precursors for further microwave treatment. Three selective magnetic nano-adsorbents (Fe3O4-MNPs-SiO2-1,2EDA-3FSA, Fe3O4-MNPs-SiO2-1,5PDA-3FSA and Fe3O4-MNPs-SiO2-1,8ODA-3FSA) were obtained via the reaction with 3-formayl salicylic acid (3FSA) as a selective reagent for Fe(III). At 5 s contact time, they exhibited maximum Fe(III) uptake equal to 4.512, 4.987 and 5.367 mmol g -1 , respectively. Furthermore, modeling of values of metal uptake capacity obtained at different shaking time intervals supports pseudo-second order kinetics.

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Section: Characterization Studies (Tem X-ray and Ft-ir Spectral Analmentioning

confidence: 78%

New Trend for Acceleration Solid Phase Extraction Process Based on Using Magnetic Nano-adsorbents along with Surface Functionalization through Microwave Assisted Solvent-free Technique

Ahmed

Soliman

2015

ANAL. SCI.

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“…It is also discharged into the environment from many anthropogenic activities such as mining, military applications, production and use of phosphate fertilizers, combustion from coal and other fuels, and nuclear power facilities. The increasing usage of nuclear reactors for large-scale energy production leads to radioactive contamination; hence, research concerning the separation of U(VI) ions from water has become a critical environmental issue in the last decade [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…To improve the sorption capacity of sorbents, many attempts have been made for chemical modification of sorbent surfaces using functional groups such as amidoxime [3,14,15], imidazole [16], and metal oxides [4,17,18], which possess chelating abilities toward U(VI) ions. As commonly used sorbents are in powder form, their utilization as a filter material is not convenient due to the difficulty in the isolation of the solid from the solution medium following the sorption stage.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of amidoximated polyacrylonitrile fibers and its application for sorption of aqueous uranyl ions under continuous flow

Horzum

Shahwan

Parlak

et al. 2012

Chemical Engineering Journal

112

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“…This value is higher than that obtained with magnetite nanoparticles either raw 16 or functionalized with quercetin. 17 The value of the Langmuir constant (K L ) is indicative of the good adsorption capacity. log q e = log K F + 1 n F log C e (4) K F is roughly an indicator of the adsorption capacity mg/g, when 1< n F <10.…”

Section: Resultsmentioning

confidence: 99%

Maghemite nanoparticles bearing di(amidoxime) groups for the extraction of uranium from wastewaters

et al. 2016

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Polyamidoximes (pAMD) are known to have strong affinities for uranyl cations. Grafting pAMD onto the surface of functionalized maghemite nanoparticles (MNP) leads to a nanomaterial with high capacities in the extraction of uranium from wastewaters by magnetic sedimentation. A diamidoxime (dAMD) specifically synthesized for this purpose showed a strong affinity for uranyl: Ka = 105 M-1 as determined by Isothermal Titration Calorimetry (nano-ITC). The dAMD was grafted onto the surface of MNP and the obtained sorbent (MNP-dAMD) was characterized. The nanohybrids were afterward incubated with different concentrations of uranyl and the solid phase recovered by magnetic separation. This latter was characterized by zeta-potential measurements, X-Ray Photoelectron Spectroscopy (XPS) and X-Ray Fluorescence spectroscopy (XRF), whereas the supernatant was analyzed by Inductively Coupled Plasma coupled to Mass Spectrometry (ICP-MS). All the data fitted the models of Langmuir, Freundlich and Temkin isotherms very well. These isotherms allowed us to evaluate the efficiency of the adsorption of uranium by MNP-dAMD. The saturation sorption capacity (qmax) was determined. It indicates that MNP-dAMD is able to extract up to 120 mg of uranium per gram of sorbent. Spherical aberration (Cs)-corrected High-Resolution Scanning Transmission Electron Microscopy (HRSTEM) confirmed these results and clearly showed that uranium is confined at the surface of the sorbent. Thus, MNP-dAMD presents a strong potential for the extraction of uranium from wastewaters.

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Surface modified magnetic Fe3O4 nanoparticles as a selective sorbent for solid phase extraction of uranyl ions from water samples

Cited by 204 publications

References 41 publications

New Trend for Acceleration Solid Phase Extraction Process Based on Using Magnetic Nano-adsorbents along with Surface Functionalization through Microwave Assisted Solvent-free Technique

New Trend for Acceleration Solid Phase Extraction Process Based on Using Magnetic Nano-adsorbents along with Surface Functionalization through Microwave Assisted Solvent-free Technique

Synthesis of amidoximated polyacrylonitrile fibers and its application for sorption of aqueous uranyl ions under continuous flow

Maghemite nanoparticles bearing di(amidoxime) groups for the extraction of uranium from wastewaters

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