Magnetically modified hydroxyapatite nanoparticles for the removal of uranium (VI): Preparation, characterization and adsorption optimization

El-Maghrabi, Heba H.; Younes, Ahmed; Salem, Amany R.; Rabie, K.A.; El-Shereafy, E.

doi:10.1016/j.jhazmat.2019.05.096

Cited by 123 publications

(15 citation statements)

References 56 publications

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“…The peak at 1616 cm −1 is characteristic of -COO, which could be attributed to the absorption of CO 2 in air during the test [40,41]. The peaks at 1044.82 and 602.94 cm −1 , (before adsorption) and 1007.83 and 600.90 cm −1 (after adsorption) were attributable to the PO 4 3− group in the adsorbent [40,52], and the position and intensity of the characteristic peaks in the adsorbent changed considerably before and after the reaction. The results revealed that the PO 4 3− in the HAP@CoFe 2 O 4 is involved in the reaction.…”

Section: U(vi) Removal Mechanismsmentioning

confidence: 92%

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Fast and Efficient Removal of Uranium onto a Magnetic Hydroxyapatite Composite: Mechanism and Process Evaluation

Tao

Peng

et al. 2021

Processes

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The exploration and rational design of easily separable and highly efficient sorbents with satisfactory capability of extracting radioactive uranium (U)-containing compound(s) are of paramount significance. In this study, a novel magnetic hydroxyapatite (HAP) composite (HAP@ CoFe2O4), which was coupled with cobalt ferrite (CoFe2O4), was rationally designed for uranium(VI) removal through a facile hydrothermal process. The U(VI) ions were rapidly removed using HAP@ CoFe2O4 within a short time (i.e., 10 min), and a maximum U(VI) removal efficiency of 93.7% was achieved. The maximum adsorption capacity (Qmax) of the HAP@CoFe2O4 was 338 mg/g, which demonstrated the potential of as-prepared HAP@CoFe2O4 in the purification of U(VI) ions from nuclear effluents. Autunite [Ca(UO2)2(PO4)2(H2O)6] was the main crystalline phase to retain uranium, wherein U(VI) was effectively extracted and immobilized in terms of a relatively stable mineral. Furthermore, the reacted HAP@CoFe2O4 can be magnetically recycled. The results of this study reveal that the suggested process using HAP@CoFe2O4 is a promising approach for the removal and immobilization of U(VI) released from nuclear effluents.

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Section: U(vi) Removal Mechanismsmentioning

confidence: 92%

Section: U(vi) Removal Mechanismsmentioning

confidence: 93%

Fast and Efficient Removal of Uranium onto a Magnetic Hydroxyapatite Composite: Mechanism and Process Evaluation

Tao

Peng

et al. 2021

Processes

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“…The stretching vibration of carbonyl were observed at 1458, and 871 cm -1 while, phosphate group shown absorption at 1035 and 630 cm -1 . 21,32,33 The Fe-O bond stretching vibration bands were occurred at 1619 and 530 cm -1 . It proved that MHAP nanoparticles were successfully formed.…”

Section: Ft-ir Of Magnetic Hydroxyapatite Nanoparticlesmentioning

confidence: 99%

“…Even HAP modi ed with silver was used in the formulation of antibacterial composite coatings. 20 Additionally, magnetically modi ed HAP was utilized in the removal of heavy metals such as uranium (VI), 21 lead ion, 22 cadmium (II), 23 copper, nickel, 24 and other pollutants for the water. 25 As per the literature, till today MHAP has not been used in the designing of anticorrosive coatings for the metal protection.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Anticorrosive Performance of Renewable Cardanol Based Polyurethane Coatings by Incorporating Magnetic Hydroxyapatite Nanoparticles

Asif

Mahajan

Sreeharsha

et al. 2021

Preprint

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The present investigation demonstrates renewable cardanol based polyol for the formulation of nanocomposite polyurethane (PU) coatings. The functional and structural features of cardanol polyol and nanoparticles were studied by FT-IR and 1H NMR spectroscopic techniques. The magnetic hydroxyapatite nanoparticles (MHAP) were dispersed in PU formulations to develop nanocomposite anticorrosive coatings. The amount of MHAP in PU formulations was varied from 1-5%, increase the percentage of MHAP increases the anticorrosive performance as examined by immersion and electrochemical methods. The nanocomposite PU coatings shows good coating properties viz., gloss, pencil hardness, flexibility, cross-cut adhesion and chemical resistance. Additionally, the coatings also studied for surface morphology, wetting, and thermal properties by scanning electron microscope (SEM), contact angle, and thermogravimetric analysis (TGA), respectively. The hydrophobic nature of PU coatings increased by addition of MHAP and optimum result (1050) was observed in 3% loading. The developed coatings revealed hydrophobic nature with excellent anticorrosive performance.

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“…Hydroxyapatite (HaP), is one of the apatite mineral family [ 6 ] and is similar to the mineral constituent of bone. It is biocompatible, bioactive, and has particular multi-adsorbing sites [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Investigation of Curcumin–DNA Interaction by Using Hydroxyapatite Nanoparticles–Ionic Liquids Based Composite Electrodes

et al. 2021

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Hydroxyapatite nanoparticles (HaP) and ionic liquid (IL) modified pencil graphite electrodes (PGEs) are newly developed in this assay. Electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and cyclic voltammetry (CV) were applied to examine the microscopic and electrochemical characterization of HaP and IL-modified biosensors. The interaction of curcumin with nucleic acids and polymerase chain reaction (PCR) samples was investigated by measuring the changes at the oxidation signals of both curcumin and guanine by differential pulse voltammetry (DPV) technique. The optimization of curcumin concentration, DNA concentration, and the interaction time was performed. The interaction of curcumin with PCR samples was also investigated by gel electrophoresis.

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Magnetically modified hydroxyapatite nanoparticles for the removal of uranium (VI): Preparation, characterization and adsorption optimization

Cited by 123 publications

References 56 publications

Fast and Efficient Removal of Uranium onto a Magnetic Hydroxyapatite Composite: Mechanism and Process Evaluation

Fast and Efficient Removal of Uranium onto a Magnetic Hydroxyapatite Composite: Mechanism and Process Evaluation

Enhancement of Anticorrosive Performance of Renewable Cardanol Based Polyurethane Coatings by Incorporating Magnetic Hydroxyapatite Nanoparticles

Electrochemical Investigation of Curcumin–DNA Interaction by Using Hydroxyapatite Nanoparticles–Ionic Liquids Based Composite Electrodes

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