Adsorption efficiency of sol–gel derived nano metal ferrites, MFe2O4 (M = Ni, Zn, Cu) on the removal of Cr (VI) ions from aqueous solution

Nizam, Thanooja; Thomas, Mariyam; George, M. V.; Joseph, Aruna

doi:10.1007/s10971-022-05736-w

Cited by 9 publications

(3 citation statements)

References 29 publications

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“…The larger absorption band is assigned to the intrinsic stretching vibrations of the M-O bond in the tetrahedral sites, whereas the lower absorption band is due to the M-O bond vibrations in the octahedral sites. 33 The AFM image (Figure 1D) of NiZnCoF confirms the formation of nanosize NiZnCoF particles. As depicted in the image NiZnCoF particles exhibit a wide range of particle size distribution.…”

Section: Characterizationmentioning

confidence: 69%

“…In FTIR (Figure 1C), two characteristic peaks of ferrites are obtained at 555 and 592 cm –1 because of the characteristic vibrational modes of ferrite. The larger absorption band is assigned to the intrinsic stretching vibrations of the M–O bond in the tetrahedral sites, whereas the lower absorption band is due to the M–O bond vibrations in the octahedral sites 33 …”

Section: Resultsmentioning

confidence: 99%

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Kinetics of the thermolysis of 3‐nitro‐2,4‐dihydro‐3H‐1,2,4‐triazol‐5‐one (NTO) and nanosize NTO the presence of nickel‐zinc‐cobalt ferrite

Dave

Sirach

Chaturvedi³

2022

Int J of Chemical Kinetics

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This study deals with the evaluation of the catalytic activity of quaternary nickelzinc-cobalt ferrite (NiZnCoF) nanoparticles on the thermal decomposition of 3-nitro-2,4-dihydro-3H-1,2,4-triazol-5-one (NTO). Nanosize NiZnCoF has been successfully synthesized using the co-precipitation method. The effect of 5% by mass NiZnCoF on the thermolysis of NTO and NTO with nanosize (nNTO) has been studied using simultaneous thermal analysis. In the presence of NiZnCoF additive, the decomposition of NTO and nNTO was increased by 8.55 and 7.68 • C, indicating that the additive stabilizes NTO and nNTO. The DSC peak temperature also suggests the presence of NiZnCoF decreases the nNTO's exothermic curve by 5.62 • C. The DSC peak curve of NTO in the presence of NiZnCoF was shifted from 276.35 to 272 • C. The activation energy calculations suggested that the high activation energy of NTO can be reduced ∼82-87 kJ mol −1 by nanosizing NTO followed by the incorporation of NiZnCoF.

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Section: Characterizationmentioning

confidence: 69%

Section: Resultsmentioning

confidence: 99%

Kinetics of the thermolysis of 3‐nitro‐2,4‐dihydro‐3H‐1,2,4‐triazol‐5‐one (NTO) and nanosize NTO the presence of nickel‐zinc‐cobalt ferrite

Dave

Sirach

Chaturvedi³

2022

Int J of Chemical Kinetics

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“…They have the advantage of low costs, but also the disadvantage of developing low adsorption capacities and low selectivity. To obtain high selectivity and increased efficiency for certain specific adsorption processes, various materials were synthesized and studied such as ferrites or oxides [85][86][87]. Adsorbent materials with magnetic properties have also been developed to improve the separation stage [88][89][90][91][92].…”

Section: Adsorptionmentioning

confidence: 99%

Heavy Metals Removal from Water and Wastewater

Lupa¹,

Cocheci²

2023

Heavy Metals - Recent Advances

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The chapter summarizes the main treatment processes used for the removal of heavy metals from water and wastewater. Heavy metals present a recalcitrant and persistent character, a bioaccumulating ability in the environment, therefore their removal from water and wastewater represents a worldwide concern. This chapter reviews the recent advances and technical applicability of the methods that have been used to treat heavy metal-containing water. The discussed technologies include chemical precipitation, coagulation-flocculation, flotation, ion exchange, adsorption, membrane filtration, and electrochemical methods. The main advantages/disadvantages and limits of each method are evaluated. It was observed that even if are made a lot of research on each mentioned method in practice is still necessary for intensive work for each case. In all methods, there are things that could be improved; therefore, future studies must be focused on the development of cost-effective materials and methods that involve low treatment costs, high efficiency, and minimal impact on the environment.

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Adsorption mechanism and electrochemical properties of disperse blue 2BLN onto magnetic Cu_0.₂Zn₀_.₃Co₀_.₅Fe₂O₄ nanoparticles prepared via the rapid combustion process

Zhou,

Lv,

Wang

et al. 2024

Env Prog and Sustain Energy

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Magnetic Cu0.2Zn0.3Co0.5Fe2O4 nanoparticles were prepared by the rapid combustion method and characterized by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), x‐ray diffraction (XRD), and vibrating sample magnetometer (VSM). The average particle size and the saturation magnetization of the nanoparticles prepared at 400°C with 25 mL absolute alcohol were about 60.9 nm and 50 emu/g. The results of the experiment displayed that the adsorption process agreed with the pseudo‐second‐order kinetics model (R2 > 0.98) and Langmuir isotherm model (R2 = 0.9982), indicating that the adsorption of DB‐2BLN onto magnetic Cu0.2Zn0.3Co0.5Fe2O4 nanoparticles was monolayer chemisorption. ΔH (ΔH = −28.0135 kJ/mol) of the thermodynamic experiment was less than 0, indicating that the adsorption was an exothermic process. The effects of pH, initial concentration of dye, ionic strength, temperature, and adsorbent dosage on the adsorption process of DB‐2BLN onto magnetic Cu0.2Zn0.3Co0.5Fe2O4 nanoparticles and the regeneration performance of the nanoparticles were investigated. When the pH was determined to be 2 and the adsorbent dosage was 5 mg, the adsorption capacity reached the maximum. After 7 cycles, the removal rate of DB‐2BLN still reached 92.6% of that for the first adsorption, showing excellent regeneration performance. Finally, the electrochemical properties of the magnetic Cu0.2Zn0.3Co0.5Fe2O4 nanoparticles were investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS).

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Adsorption efficiency of sol–gel derived nano metal ferrites, MFe2O4 (M = Ni, Zn, Cu) on the removal of Cr (VI) ions from aqueous solution

Cited by 9 publications

References 29 publications

Kinetics of the thermolysis of 3‐nitro‐2,4‐dihydro‐3H‐1,2,4‐triazol‐5‐one (NTO) and nanosize NTO the presence of nickel‐zinc‐cobalt ferrite

Kinetics of the thermolysis of 3‐nitro‐2,4‐dihydro‐3H‐1,2,4‐triazol‐5‐one (NTO) and nanosize NTO the presence of nickel‐zinc‐cobalt ferrite

Heavy Metals Removal from Water and Wastewater

Adsorption mechanism and electrochemical properties of disperse blue 2BLN onto magnetic Cu_0.₂Zn₀_.₃Co₀_.₅Fe₂O₄ nanoparticles prepared via the rapid combustion process

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Adsorption efficiency of sol–gel derived nano metal ferrites, MFe2O4 (M = Ni, Zn, Cu) on the removal of Cr (VI) ions from aqueous solution

Cited by 9 publications

References 29 publications

Kinetics of the thermolysis of 3‐nitro‐2,4‐dihydro‐3H‐1,2,4‐triazol‐5‐one (NTO) and nanosize NTO the presence of nickel‐zinc‐cobalt ferrite

Kinetics of the thermolysis of 3‐nitro‐2,4‐dihydro‐3H‐1,2,4‐triazol‐5‐one (NTO) and nanosize NTO the presence of nickel‐zinc‐cobalt ferrite

Heavy Metals Removal from Water and Wastewater

Adsorption mechanism and electrochemical properties of disperse blue 2BLN onto magnetic Cu0.2Zn0.3Co0.5Fe2O4 nanoparticles prepared via the rapid combustion process

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Resources

About

Adsorption mechanism and electrochemical properties of disperse blue 2BLN onto magnetic Cu_0.₂Zn₀_.₃Co₀_.₅Fe₂O₄ nanoparticles prepared via the rapid combustion process