Preparation and characterization of porous reduced graphene oxide based inverse spinel nickel ferrite nanocomposite for adsorption removal of radionuclides

Lingamdinne, Lakshmi Prasanna; Choi, Yongki; Kim, Im-Soon; Yang, Jae‐Kyu; Koduru, Janardhan Reddy; Chang, Yoon-Young

doi:10.1016/j.jhazmat.2016.12.035

Cited by 191 publications

(43 citation statements)

References 52 publications

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“…The formation of rGONF was further confirmed by the measurement of the structural disorder from the intensity ratio of the D and G bands (I D /I G ). The intensity ratio of the D and G bands for rGONF was 1.094, showing an enhanced value compared to that of GO (0.96) [19]. In addition, the obtained rGONF has considerable crystallinity.…”

Section: Preparation Of Real Ground Water Spiked With Pb(ii) or Cr(iii)mentioning

confidence: 87%

“…rGONF was prepared by the procedure reported in our previous paper [19]. Briefly described here, hydrazine hydrate (10 mL) was slowly added to the solution containing 0.5 g GO (GO prepared by using the well-known Hummer's method from Graphite flakes procured from Sigma-Aldrich, St. Louis, MO, USA) and a 2:1 molar ratio of Fe 3+ :Ni 2+ at pH ≥ 12 in a nitrogen atmosphere for the preparation of rGONF.…”

Section: Preparation Methods Of Rgonfmentioning

confidence: 99%

“…Based on these overall results, the average particle size of rGONF was found to be 32.0 ± 2.0 nm. The surface site density (or) site concentration for the specific surface area (Ns) of rGONF was calculated using potentiometric titration and was found to be 0.00238 mol·g −1 , which is higher than that for the GO and NiFe 2 O 4 [19]. Thus, the high surface area with high surface site density of rGONF can have potentially advantageous for the adsorptive removal of pollutants.…”

Section: Surface Morphology and Size Characterization Of Prepared Rgonfmentioning

confidence: 99%

“…It was also clearly observed from Table 1 that the adsorption capacity of rGONF was higher than the GO and NiFe2O4 indicates the synergistic enhancement of the adsorption metal ion onto rGONF. The high adsorption of rGONF may be due to the fact that the rGONF has a high surface area and high surface site density when compared with GO and NiFe2O4 [19]. The distribution of Pb(II) and Cr(III) between the rGONF solution in equilibrium over a range of concentrations at three different temperatures (298-328 K) was studied.…”

Section: Evaluation Of Metal Ions Uptake Characteristics Of Rgonf By mentioning

confidence: 99%

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Enhanced Adsorption Removal of Pb(II) and Cr(III) by Using Nickel Ferrite-Reduced Graphene Oxide Nanocomposite

Lingamdinne

Kim

et al. 2017

Metals

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Abstract:The heavy metals, such as Pb(II) and radioisotope Cr(III), in aqueous solutions are toxic even at trace levels and have caused adverse health impacts on human beings. Hence the removal of these heavy metals from the aqueous environment is of the utmost importance to protect biodiversity, hydrosphere ecosystems, and human beings. In this study, the reduced graphene oxide based inverse spinel nickel ferrite (rGONF) nanocomposite has been prepared and was utilized for the removal of Pb(II) and Cr(III) from aqueous solutions. The prepared rGONF has been confirmed by X-ray photoelectron (XPS) and Raman spectroscopy. The surface characteristics of rGONF were measured by scanning electron microscopy (SEM), High-Resolution Transmission Electron Microscope (HR-TEM), and Brunauer-Emmett-Teller (BET) surface analysis. The average particle size of rGONF was found to be 32.0 ± 2.0 nm. The surface site density for the specific surface area (Ns) of rGONF was found to be 0.00238 mol·g −1 , which was higher than that of the graphene oxide (GO) and NiFe 2 O 4 , which was expected. The prepared rGONF has been successfully applied for the removal of Pb(II) and Cr(III) by batch mode. The batch adsorption studies concluded that the adsorption of Pb(II) and Cr(III) onto rGONF was rapid and the adsorption percentage was more than 99% for both metal ions. The adsorption isotherm results found that the adsorptive removal of both metal ions onto rGONF occurred through monolayer adsorption on a homogeneous surface of rGONF. The pH-edge adsorption results suggest the adsorption occurs through an inner-sphere surface complex, which is proved by 2-pKa-diffusion model fitting, where the pH-edge adsorption data was well fitted. The adsorption of metal ions increased with increasing temperature. The overall obtained results demonstrated that the rGONF was an effective adsorbent for Pb(II) and Cr(III) removal from wastewater.

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Section: Preparation Of Real Ground Water Spiked With Pb(ii) or Cr(iii)mentioning

confidence: 87%

Section: Preparation Methods Of Rgonfmentioning

confidence: 99%

Section: Surface Morphology and Size Characterization Of Prepared Rgonfmentioning

confidence: 99%

Section: Evaluation Of Metal Ions Uptake Characteristics Of Rgonf By mentioning

confidence: 99%

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Enhanced Adsorption Removal of Pb(II) and Cr(III) by Using Nickel Ferrite-Reduced Graphene Oxide Nanocomposite

Lingamdinne

Kim

et al. 2017

Metals

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“…It is found from literature that ferromagnetism in NiFe 2 O 4 originates from the antiparallel orientation of spins at (A) and (B) sites. Recently graphene oxide based inverse spinel nickel ferrite nanocomposite was used for uranium, thorium and dipyrone removal [3] [4]. Nickel ferrite nanoparticles in calcium phosphate nanostructure for organic modifier followed by rapid thermal processing in biomedical applications [5], rare earth doped nickel ferrites as fuel [6], Ni ferrite powders are prepared by plasma arc discharge process [7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Annealing Temperature on the Structural and Magnetic Properties of NiFe<sub>2</sub>O<sub>4</sub> Nanoferrites

Sangeetha¹,

Kumar²,

Kumar³

2017

AMPC

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Nanocrystalline NiFe 2 O 4 spinel ferrites were synthesized by sol-gel method. The structural and magnetic properties were investigated using X-ray diffraction (XRD), Fourier Transform Infrared (FTIR) spectroscopy, Scanning Electron Microscopy (SEM) and Vibrating Sample Magnetometer (VSM). Annealing temperature showed prominent effect on the grain size. The average grain size of NiFe 2 O 4 was observed to increase from 31 nm to 54 nm as the annealing increased from 500˚C to 1000˚C. The IR spectra showed the absorption bands corresponding to stretching of tetrahedral and octahedral bands. The magnetic properties were observed to depend strongly on the annealing temperature.

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Spinel Ferrite Magnetic Nanoparticles

Paswan

Kumar

Singh

et al. 2021

Pollutants and Water Management

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Preparation and characterization of porous reduced graphene oxide based inverse spinel nickel ferrite nanocomposite for adsorption removal of radionuclides

Cited by 191 publications

References 52 publications

Enhanced Adsorption Removal of Pb(II) and Cr(III) by Using Nickel Ferrite-Reduced Graphene Oxide Nanocomposite

Enhanced Adsorption Removal of Pb(II) and Cr(III) by Using Nickel Ferrite-Reduced Graphene Oxide Nanocomposite

Effect of Annealing Temperature on the Structural and Magnetic Properties of NiFe<sub>2</sub>O<sub>4</sub> Nanoferrites

Spinel Ferrite Magnetic Nanoparticles

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Preparation and characterization of porous reduced graphene oxide based inverse spinel nickel ferrite nanocomposite for adsorption removal of radionuclides

Cited by 191 publications

References 52 publications

Enhanced Adsorption Removal of Pb(II) and Cr(III) by Using Nickel Ferrite-Reduced Graphene Oxide Nanocomposite

Enhanced Adsorption Removal of Pb(II) and Cr(III) by Using Nickel Ferrite-Reduced Graphene Oxide Nanocomposite

Effect of Annealing Temperature on the Structural and Magnetic Properties of NiFe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt; Nanoferrites

Spinel Ferrite Magnetic Nanoparticles

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Effect of Annealing Temperature on the Structural and Magnetic Properties of NiFe<sub>2</sub>O<sub>4</sub> Nanoferrites