Magnetic iron oxide-carbon nanocomposites: Impacts of carbon coating on the As(V) adsorption and inductive heating responses

Hương, Phạm Thị Lan; Huy, Le Thanh; Hoang, Lan; Thang, Le Hong; An, Tran Trong; Quy, Nguyen Van; Tuấn, Phạm Anh; Alonso, Javier; Phan, Manh‐Huong; Le, Anh‐Tuan

doi:10.1016/j.jallcom.2017.12.178

Cited by 42 publications

(13 citation statements)

References 23 publications

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“…This agglomerate formation indicates that the surface energy of the nanoparticles is relatively strong. Similar results are obtained by Huong et al 22 and Ye et al 31 . The elemental maps are shown in Figure 2.…”

Section: Characterization Of Nanoparticlessupporting

confidence: 91%

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Fe3O4@C core-shell nanoparticles as adsorbent of ionic zinc: evaluating of the adsorptive capacity

et al. 2019

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Zinc is an important chemical element in many metabolic mechanisms at low concentrations, but can be toxic when administrated in doses higher than 500 µg•g-1 or 3 mg•L-1. This metal has been detected in many aquatic environments due to several industry activities and swine manure effluents. Thus, the contaminant removal of water and wastewater has been a major challenge. Many processes are applied and evaluated in an attempt to removal zinc found in environment, such as adsorption. In the present study Fe 3 O 4 @C core-shell nanoparticles were synthesized and used to adsorb ionic zinc species in aqueous solutions. The core-shell nanoparticles exhibited excellent zinc removal capacity, with a maximum efficiency equal 65% where applied in an aqueous solution containing 10 mg•l-1 of this ionic metal.

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Section: Characterization Of Nanoparticlessupporting

confidence: 91%

“…Furthermore, the carbon nanolayers protected the magnetic core against acid and alkaline environments, which can deteriorate the nanostrucuture 22,23 . This carbon shell can also easily functionalized with several chemical groups, like amines, to increase the affinity at metal adsorption 23,24 .…”

Section: Introductionmentioning

confidence: 99%

Fe3O4@C core-shell nanoparticles as adsorbent of ionic zinc: evaluating of the adsorptive capacity

et al. 2019

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“…For outer-sphere complexation, the interaction between As(V) ions and adsorption sites on nanocomposite surface depended on the electrostatic interaction. The in-sphere complexation was formed in Fe 3 O 4 /GO structures, the As–O–Fe bonds were formed between As–O(H) groups from H 2 AsO 4 − and HAsO 4 2− as ligands and –OH, –COOH groups of Fe 3 O 4 /GO structure (Huong et al., 2018; Kumar et al., 2014).…”

Section: Resultsmentioning

confidence: 99%

“…Based on the results of the survey of pH effects, the adsorption capacity of Fe 3 O 4 /GO reduced while pH values increased. At low pH, the concentration of H + ions in the solution increases, –OH and –COOH groups become –OH 2 + and –COOH 2 + cations, which is advantageous for the adsorption of As(V) (Huong et al., 2018). The main mechanism of adsorption depends on the outer-sphere complex as follows …”

Section: Resultsmentioning

confidence: 99%

Fabrication and adsorption properties of magnetic graphene oxide nanocomposites for removal of arsenic (V) from water

Thy

Thuong

et al. 2020

Adsorption Science & Technology

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In this work, magnetic graphene oxide nanocomposites were synthesized by co-precipitation method and used as an adsorbent for removal of arsenic (V) ions from water. The structure and morphology of magnetic graphene oxide nanocomposites were studied by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, Brunauer–Emmett–Teller specific surface area, and vibrating sample magnetometry. Fourier transform infrared spectroscopy, X-ray diffraction, and transmission electron microscopy results of magnetic graphene oxide presented that the Fe3O4 nanoparticles in the size range of 10–25 nm were decorated on graphene oxide nanosheets. The adsorption properties of magnetic graphene oxide nanocomposites for arsenic (V) from water were investigated to study the effects of magnetic graphene oxide mass ratio, contact time, pH, and initial concentration. The suitable magnetic graphene oxide mass ratio of nanocomposites for arsenic (V) adsorption was determined to be 4:1 (FG2). The adsorption process on FG2 followed a pseudo-second-order kinetic and well fitted in to Langmuir isotherm model with the maximum adsorption capacity of 69.44 mg/g at pH 3. Accordingly, FG2 could be used as an effective adsorbent for removal of arsenic (V) from water.

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“…This core-shell nanostructure associates the high adsorption capability of the carbon nanoparticles with the high number of active sites and high magnetic response, which provides a fast and efficient separation of nanoparticles 26,27 . In addition, protects the core of carbon acids and alkaline environments, avoiding your deterioration 28,29 .…”

Section: Introductionmentioning

confidence: 99%

Obtaining of Fe3O4@C Core-Shell Nanoparticles as an Adsorbent of Tetracycline in Aqueous Solutions

et al. 2019

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Tetracycline is used to treat various diseases in animals and humans, so its high use causes this substance to be frequently found in effluents and in potable water reservoirs, causing serious problems for human health and the environment. Many processes are applied and evaluated in an attempt to removal tetracycline found in environment, such as adsorption. The application of iron-carbon nanoparticles with core-shell structure (Fe 3 O 4 @C) as adsorbent, can be an alternative to removal of these contaminants. In the present study Fe 3 O 4 @C nanoparticles were synthesized and used to adsorb tetracycline in aqueous solutions. The core-shell characterization was performed using X-ray diffraction techniques, infrared spectroscopy, surface area, chemical analysis and morphology, and adsorption capacity through isotherms. The results indicated that Fe 3 O 4 @C nanoparticles presented good tetracycline removal capability, 73.3%, when applied an initial concentration of antibiotic of the 30 mg L-1 and 0.5 g of adsorbent.

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Magnetic iron oxide-carbon nanocomposites: Impacts of carbon coating on the As(V) adsorption and inductive heating responses

Cited by 42 publications

References 23 publications

Fe3O4@C core-shell nanoparticles as adsorbent of ionic zinc: evaluating of the adsorptive capacity

Fe3O4@C core-shell nanoparticles as adsorbent of ionic zinc: evaluating of the adsorptive capacity

Fabrication and adsorption properties of magnetic graphene oxide nanocomposites for removal of arsenic (V) from water

Obtaining of Fe3O4@C Core-Shell Nanoparticles as an Adsorbent of Tetracycline in Aqueous Solutions

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