Sono-adsorption of organic dyes onto CoFe2O4/Graphene oxide nanocomposite

Gupta, Anjali; Viltres, Herlys; Gupta, Nishesh Kumar

doi:10.1016/j.surfin.2020.100563

Cited by 32 publications

(16 citation statements)

References 44 publications

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“…Spinel ferrite, whose chemical structure is MFe 2 O 4 (M is a divalent metal cation), is a good choice for the formation of graphene composites and dye adsorption. Given their excellent magnetic properties, nanocomposites can be magnetically separated from wastewater and then reused for the removal of organic dyes [ 27 ]. In addition, ferrites have chemical stability, good mechanical hardness, and adsorption property [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

“…For example, Li et al synthesized poly(4-vinyl pyridine)-graphene oxide-Fe 3 O 4 to remove MB dye from an aqueous solution [ 29 ]. Gupta and his collaborators studied the adsorption property of CoFe 2 O 4 /GO for MB and methyl violet (MV) dyes [ 27 ]. Geng et al investigated a functional hybrid of rGO-Fe 3 O 4 nanoparticles for dye removal [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

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Facile Microwave Hydrothermal Synthesis of ZnFe2O4/rGO Nanocomposites and Their Ultra-Fast Adsorption of Methylene Blue Dye

Wang

Shih

2021

Materials

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The industry development in the last 200 years has led to to environmental pollution. Dyes emitted by pharmaceutical and other industries are major organic pollutants. Organic dyes are a pollutant that must be removed from the environment. In this work, we adopt a facile microwave hydrothermal method to synthesize ZnFe2O4/rGO (ZFG) adsorbents and investigate the effect of synthesis temperature. The crystal structure, morphology, chemical state, and magnetic property of the nanocomposite are investigated by X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscopy, and a vibrating sample magnetometer. Furthermore, the synthesized ZFGs are used to remove methylene blue (MB) dye, and the adsorption kinetics, isotherm, mechanism, and reusability of this nanomaterial are studied. The optimal ZFG nanocomposite had a dye removal percentage of almost 100%. The fitting model of adsorption kinetics followed the pseudo-second-order model. The isotherm model followed the Langmuir isotherm and the theoretical maximum adsorption capacity of optimal ZFG calculated by this model was 212.77 mg/g. The π–π stacking and electrostatic interaction resulted in a high adsorption efficiency of ZFG for MB adsorption. In addition, this nanocomposite could be separated by a magnet and maintain its dye removal percentage at almost 100% removal after eight cycles, which indicates its high suitability for utilization in water treatment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Facile Microwave Hydrothermal Synthesis of ZnFe2O4/rGO Nanocomposites and Their Ultra-Fast Adsorption of Methylene Blue Dye

Wang

Shih

2021

Materials

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“…Though the increasing mass provides more adsorption sites for high % removal, the limited concentration of Hg(II) ions at a higher dosage results in incomplete saturation of the adsorbent and low adsorption capacity. 37,38 The effect of Hg(II) concentration on the adsorption capacity was studied in the range of 20-350 mg L À1 (Fig. 4d).…”

Section: Parameter Optimizationmentioning

confidence: 99%

Magnetic MOF-808 as a novel adsorbent for toxic metal removal from aqueous solutions

Paz

Viltres

Gupta

et al. 2022

Environ. Sci.: Adv.

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“…Adsorbed dye molecules can also be decomposed by calcination at high temperature, [41] in which spent CoFe 2 O 4 /GO (CoF/GO) nanosorbent is regenerated by heating in a furnace Not mentioned. 80 [47] Ternary…”

Section: Regeneration and Recycling Of Go-based Nanosorbentsmentioning

confidence: 99%

Graphene Oxide‐Based Adsorbents for Organic‐Dyes Removal from Contaminated Water: A Review

Tran

2022

Zeitschrift anorg allge chemie

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Polluted organic dyes in water are considered as some of the most serious problems affecting humans. Adsorption techniques using traditional adsorbents such as clay, zeolite, silica, active carbon, and polymers are low cost, safe, and efficient for the treatment of organic dyes in contaminated water. However, traditional adsorbents usually have low adsorption capacity (q max ). To improve q max , graphene oxide (GO) is considered as an excellent adsorption enhancer owing to its two-dimensional single atomic layer material of sp 2 -hybridised carbon atoms arranged in a honeycomb lattice structure with high surface area, high solubility, good chemical stability, strong mechanical strength, and excellent thermal stability. In this review, the synthesis and advantage results on improving the adsorption efficiency and q max when applying GO-based nanocomposites as nanosorbents for organic-dye removal are systematised and discussed in detail.

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Sono-adsorption of organic dyes onto CoFe2O4/Graphene oxide nanocomposite

Cited by 32 publications

References 44 publications

Facile Microwave Hydrothermal Synthesis of ZnFe2O4/rGO Nanocomposites and Their Ultra-Fast Adsorption of Methylene Blue Dye

Facile Microwave Hydrothermal Synthesis of ZnFe2O4/rGO Nanocomposites and Their Ultra-Fast Adsorption of Methylene Blue Dye

Magnetic MOF-808 as a novel adsorbent for toxic metal removal from aqueous solutions

Graphene Oxide‐Based Adsorbents for Organic‐Dyes Removal from Contaminated Water: A Review

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