Fabrication of Fe3O4 nanoparticles coated by extracted shrimp peels chitosan as sustainable adsorbents for removal of chromium contaminates from wastewater: The design of experiment

Pourmortazavi, Seied Mahdi; Sahebi, Hamed; Zandavar, Hamed; Mirsadeghi, Somayeh

doi:10.1016/j.compositesb.2019.107130

Cited by 94 publications

(35 citation statements)

References 81 publications

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“…The MCT magnetic saturation (Ms) was 42.53 emu/g; however, the raw MCT functionalization (cysteine grafting) reduced the Ms to 25.81 emu/g. The Ms values obtained were substantially lower than those recorded from bulk magnetite NPs (~80 emu/g) [25]). For raw MCT, Ms fell below 42.53 emu/g: magnetite NPs immobilized in polymer matrices showed comparable reductions [25].…”

Section: Magnetic Propertiescontrasting

confidence: 65%

“…The Ms values obtained were substantially lower than those recorded from bulk magnetite NPs (~80 emu/g) [25]). For raw MCT, Ms fell below 42.53 emu/g: magnetite NPs immobilized in polymer matrices showed comparable reductions [25]. The molecular weight of the polymer coating increased according to MCT < Cys, which suggests that the proportion of Fe 3 O 4 core in the composite reduced in lockstep with the fall in Ms values [4,25].…”

Section: Magnetic Propertiescontrasting

confidence: 65%

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Mesoporous Magnetic Cysteine Functionalized Chitosan Nanocomposite for Selective Uranyl Ions Sorption: Experimental, Structural Characterization, and Mechanistic Studies

et al. 2022

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Nuclear power facilities are being expanded to satisfy expanding worldwide energy demand. Thus, uranium recovery from secondary resources has become a hot topic in terms of environmental protection and nuclear fuel conservation. Herein, a mesoporous biosorbent of a hybrid magnetic–chitosan nanocomposite functionalized with cysteine (Cys) was synthesized via subsequent heterogeneous nucleation for selectively enhanced uranyl ion (UO22+) sorption. Various analytical tools were used to confirm the mesoporous nanocomposite structural characteristics and confirm the synthetic route. The characteristics of the synthesized nanocomposite were as follows: superparamagnetic with saturation magnetization (MS: 25.81 emu/g), a specific surface area (SBET: 42.56 m2/g) with a unipore mesoporous structure, an amine content of ~2.43 mmol N/g, and a density of ~17.19/nm2. The experimental results showed that the sorption was highly efficient: for the isotherm fitted by the Langmuir equation, the maximum capacity was about 0.575 mmol U/g at pH range 3.5–5.0, and Temperature (25 ± 1 °C); further, there was excellent selectivity for UO22+, likely due to the chemical valent difference. The sorption process was fast (~50 min), simulated with the pseudo-second-order equation, and the sorption half-time (t1/2) was 3.86 min. The sophisticated spectroscopic studies (FTIR and XPS) revealed that the sorption mechanism was linked to complexation and ion exchange by interaction with S/N/O multiple functional groups. The sorption was exothermic, spontaneous, and governed by entropy change. Desorption and regeneration were carried out using an acidified urea solution (0.25 M) that was recycled for a minimum of six cycles, resulting in a sorption and desorption efficiency of over 91%. The as-synthesized nanocomposite’s high stability, durability, and chemical resistivity were confirmed over multiple cycles using FTIR and leachability. Finally, the sorbent was efficiently tested for selective uranium sorption from multicomponent acidic simulated nuclear solution. Owing to such excellent performance, the Cys nanocomposite is greatly promising in the uranium recovery field.

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Section: Magnetic Propertiescontrasting

confidence: 65%

Section: Magnetic Propertiescontrasting

confidence: 65%

Mesoporous Magnetic Cysteine Functionalized Chitosan Nanocomposite for Selective Uranyl Ions Sorption: Experimental, Structural Characterization, and Mechanistic Studies

et al. 2022

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“…There is no extensive exploration of the formation of ROS and how they affect PEG biological proprieties; a new challenge is opened for researchers who wish to add PEG to their nanostructures for the purpose of improving physical properties of nanoparticles. Another option would be to compare PEG cytotoxicity with different polymers that have given good results in the functionalization of MNPs such as silica [51], chitosan [52] or polyethylenimine [9].…”

Section: Interactions With Erythrocytes Membranesmentioning

confidence: 99%

Magnetite Nanoparticles Coated with PEG 3350-Tween 80: In Vitro Characterization Using Primary Cell Cultures

et al. 2020

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Some medical applications of magnetic nanoparticles require direct contact with healthy tissues and blood. If nanoparticles are not designed properly, they can cause several problems, such as cytotoxicity or hemolysis. A strategy for improvement the biological proprieties of magnetic nanoparticles is their functionalization with biocompatible polymers and nonionic surfactants. In this study we compared bare magnetite nanoparticles against magnetite nanoparticles coated with a combination of polyethylene glycol 3350 (PEG 3350) and polysorbate 80 (Tween 80). Physical characteristics of nanoparticles were evaluated. A primary culture of sheep adipose mesenchymal stem cells was developed to measure nanoparticle cytotoxicity. A sample of erythrocytes from a healthy donor was used for the hemolysis assay. Results showed the successful obtention of magnetite nanoparticles coated with PEG 3350-Tween 80, with a spherical shape, average size of 119.2 nm and a zeta potential of +5.61 mV. Interaction with mesenchymal stem cells showed a non-cytotoxic propriety at doses lower than 1000 µg/mL. Interaction with erythrocytes showed a non-hemolytic propriety at doses lower than 100 µg/mL. In vitro information obtained from this work concludes that the use of magnetite nanoparticles coated with PEG 3350-Tween 80 is safe for a biological system at low doses.

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“…As in other scientific fields, a possible solution could rise from the nanotechnology. The use of nanoparticles is growing in importance in medicine, in detection and treatments against cancer or in the administration of medicines [2], [3], in material science, obtaining enhanced properties polymers and materials for several applications [4], [5], in the treatment of industrial wastes, as they are able to capture polluting substances [6], and also in energy and thermal engineering, for energy and heat storage and cooling [7]- [9]. Beyond the advantages of the application of nanoparticles in technology, further considerations must be taken, regarding the consequences over the environment.…”

Section: Introductionmentioning

confidence: 99%

Maghemite Nanofluid Based on Natural Ester: Cooling and Insulation Properties Assessment

et al. 2019

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The objective of this work is to study the effect that the addition of magnetic nanoparticles to a natural ester has on its properties and its cooling capacity. Some samples of ferrofluid (natural ester with maghemite) have been prepared using different concentrations. These have been characterized by measuring their thermo-hydraulic and dielectric properties, to find an optimal concentration. Then, the cooling capacities of the optimal nanofluid and the base fluid have been tested in a transformer immersed in these liquids. The experimental platform allowed the measurement of temperatures in different locations at different load levels. Parallel simulations of these tests have been carried out with a Computational Fluid Dynamics model of the experimental platform. The results show an improvement of the insulating capacity of the base fluid with the addition of maghemite nanoparticles, and an enhanced cooling capacity.

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Fabrication of Fe3O4 nanoparticles coated by extracted shrimp peels chitosan as sustainable adsorbents for removal of chromium contaminates from wastewater: The design of experiment

Cited by 94 publications

References 81 publications

Mesoporous Magnetic Cysteine Functionalized Chitosan Nanocomposite for Selective Uranyl Ions Sorption: Experimental, Structural Characterization, and Mechanistic Studies

Mesoporous Magnetic Cysteine Functionalized Chitosan Nanocomposite for Selective Uranyl Ions Sorption: Experimental, Structural Characterization, and Mechanistic Studies

Magnetite Nanoparticles Coated with PEG 3350-Tween 80: In Vitro Characterization Using Primary Cell Cultures

Maghemite Nanofluid Based on Natural Ester: Cooling and Insulation Properties Assessment

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