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Fabrication of mesoporous nanocomposite of graphene oxide with magnesium ferrite for efficient sequestration of Ni (II) and Pb (II) ions: Adsorption, thermodynamic and kinetic studies.
Environ Pollut. 2019 Oct; 253:111-119.EP

Abstract

Mesoporous nanocomposite of MgFe2O4 nanoparticles (NPs) and graphene oxide (GO) was synthesized using facile sonication method. Its potential was tested for the removal of Ni (II) and Pb (II) ions from water. The 2:1 w/w ratio of MgFe2O4:GO was optimum for the maximum removal of metal ions. Nanocomposite was characterized employing XRD, FT-IR, VSM, SEM-EDX, XPS, TEM and BET analyses. It possessed higher surface area (63.0 m2 g-1) than pristine NPs. Batch experiments were performed to study the effect of process parameters viz. pH, dose, contact time, initial metal ion concentration, co-existing ions and temperature. Statistical parameters were also determined. Langmuir, Temkin and Freundlich models were followed in perfect way. Langmuir model showed the monolayer adsorption of metal ions onto the homogeneous surface of nanocomposite with maximum adsorption capacity of 100.0 mg g-1 and 143.0 mg g-1 for Ni (II) and Pb (II) ions respectively, which was higher than the same for MgFe2O4 NPs and GO. Kinetic studies demonstrated that the pseudo-second order model well described the adsorption process. The ΔS° and ΔG° values revealed spontaneous nature of adsorption process. Positive ΔH° values using MgFe2O4 NPs and nanocomposite indicated endothermic removal; whereas using GO the removal was exothermic. The observed trend for coexisting ions correlated with hydrated ion radii. Efficiency of the adsorbents was also tested for realistic nickel electroplating industrial effluent. Apart from the higher adsorption potential of nanofabricated composite, its magnetic properties are advantageous in utilizing metal loaded nanocomposite for adsorption-desorption cycles for reuse.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Kaur N
Department of Chemistry, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India. Electronic address: navneet-cm@pau.edu.
Kaur M
Department of Chemistry, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India. Electronic address: manpreetchem@pau.edu.
Singh D
Department of Soil Sciences, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India.

MeSH

AdsorptionFerric CompoundsGraphiteIonsKineticsLeadMagnesium CompoundsModels, ChemicalNanocompositesNickelOxidesSpectroscopy, Fourier Transform InfraredTemperatureThermodynamicsWaterWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31302397

Citation

Kaur, Navneet, et al. "Fabrication of Mesoporous Nanocomposite of Graphene Oxide With Magnesium Ferrite for Efficient Sequestration of Ni (II) and Pb (II) Ions: Adsorption, Thermodynamic and Kinetic Studies." Environmental Pollution (Barking, Essex : 1987), vol. 253, 2019, pp. 111-119.
Kaur N, Kaur M, Singh D. Fabrication of mesoporous nanocomposite of graphene oxide with magnesium ferrite for efficient sequestration of Ni (II) and Pb (II) ions: Adsorption, thermodynamic and kinetic studies. Environ Pollut. 2019;253:111-119.
Kaur, N., Kaur, M., & Singh, D. (2019). Fabrication of mesoporous nanocomposite of graphene oxide with magnesium ferrite for efficient sequestration of Ni (II) and Pb (II) ions: Adsorption, thermodynamic and kinetic studies. Environmental Pollution (Barking, Essex : 1987), 253, 111-119. https://doi.org/10.1016/j.envpol.2019.05.145
Kaur N, Kaur M, Singh D. Fabrication of Mesoporous Nanocomposite of Graphene Oxide With Magnesium Ferrite for Efficient Sequestration of Ni (II) and Pb (II) Ions: Adsorption, Thermodynamic and Kinetic Studies. Environ Pollut. 2019;253:111-119. PubMed PMID: 31302397.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fabrication of mesoporous nanocomposite of graphene oxide with magnesium ferrite for efficient sequestration of Ni (II) and Pb (II) ions: Adsorption, thermodynamic and kinetic studies. AU - Kaur,Navneet, AU - Kaur,Manpreet, AU - Singh,Dhanwinder, Y1 - 2019/05/31/ PY - 2019/02/26/received PY - 2019/05/27/revised PY - 2019/05/27/accepted PY - 2019/7/16/pubmed PY - 2019/11/2/medline PY - 2019/7/15/entrez KW - Adsorption KW - Isotherm KW - Kinetics KW - Magnesium ferrite-GO nanocomposite KW - Thermodynamics SP - 111 EP - 119 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ Pollut VL - 253 N2 - Mesoporous nanocomposite of MgFe2O4 nanoparticles (NPs) and graphene oxide (GO) was synthesized using facile sonication method. Its potential was tested for the removal of Ni (II) and Pb (II) ions from water. The 2:1 w/w ratio of MgFe2O4:GO was optimum for the maximum removal of metal ions. Nanocomposite was characterized employing XRD, FT-IR, VSM, SEM-EDX, XPS, TEM and BET analyses. It possessed higher surface area (63.0 m2 g-1) than pristine NPs. Batch experiments were performed to study the effect of process parameters viz. pH, dose, contact time, initial metal ion concentration, co-existing ions and temperature. Statistical parameters were also determined. Langmuir, Temkin and Freundlich models were followed in perfect way. Langmuir model showed the monolayer adsorption of metal ions onto the homogeneous surface of nanocomposite with maximum adsorption capacity of 100.0 mg g-1 and 143.0 mg g-1 for Ni (II) and Pb (II) ions respectively, which was higher than the same for MgFe2O4 NPs and GO. Kinetic studies demonstrated that the pseudo-second order model well described the adsorption process. The ΔS° and ΔG° values revealed spontaneous nature of adsorption process. Positive ΔH° values using MgFe2O4 NPs and nanocomposite indicated endothermic removal; whereas using GO the removal was exothermic. The observed trend for coexisting ions correlated with hydrated ion radii. Efficiency of the adsorbents was also tested for realistic nickel electroplating industrial effluent. Apart from the higher adsorption potential of nanofabricated composite, its magnetic properties are advantageous in utilizing metal loaded nanocomposite for adsorption-desorption cycles for reuse. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/31302397/Fabrication_of_mesoporous_nanocomposite_of_graphene_oxide_with_magnesium_ferrite_for_efficient_sequestration_of_Ni__II__and_Pb__II__ions:_Adsorption_thermodynamic_and_kinetic_studies_ DB - PRIME DP - Unbound Medicine ER -