Nanocomposite of γ-Fe2O3 immobilized on graphene oxide for remediation of Ni(II) ions - Kinetics, isotherm and thermodynamics studies

Facile sonication method was used to immobilize γ-Fe2O3 nanoparticles (NPs) on graphene oxide (GO) to obtain environmentally stable γ-Fe2O3-GO nanocomposite (NC). Structure, surface morphology and composition of NC were thoroughly studied. Mössbauer analysis confirmed the presence of maghemite (γ-F...

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Main Authors: Manpreet Kaur Ubhi, Manpreet Kaur, Dhanwinder Singh, Jean Marc Greneche
Format: Article
Language:English
Published: University of Novi Sad 2017-12-01
Series:Processing and Application of Ceramics
Subjects:
Online Access:http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2038%2002.pdf
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author Manpreet Kaur Ubhi
Manpreet Kaur
Dhanwinder Singh
Jean Marc Greneche
author_facet Manpreet Kaur Ubhi
Manpreet Kaur
Dhanwinder Singh
Jean Marc Greneche
author_sort Manpreet Kaur Ubhi
collection DOAJ
description Facile sonication method was used to immobilize γ-Fe2O3 nanoparticles (NPs) on graphene oxide (GO) to obtain environmentally stable γ-Fe2O3-GO nanocomposite (NC). Structure, surface morphology and composition of NC were thoroughly studied. Mössbauer analysis confirmed the presence of maghemite (γ-Fe2O3) as dominant phase of iron oxide. TEM images of NC revealed homogeneous distribution of γ-Fe2O3 NPs over the GO nanosheet. A comparative analysis of GO, γ-Fe2O3 NPs and NC for the removal of Ni(II) ions from water was carried out by batch method and adsorption kinetics, thermodynamics and isotherms were also studied. The adsorption data fitted better to Langmuir and Freundlich adsorption isotherms as compared to Dubinin Radushkevich (D-R) and Temkin adsorption isotherms. NC showed higher qmax value (615.0 mg/g) as compared to the pristine GO (403.7 mg/g) and γ-Fe2O3 NPs (572.4 mg/g). The adsorption kinetics followed pseudo-second-order model. NC displayed greater affinity for Ni(II) ions in comparison to pristine GO and γ-Fe2O3 NPs. The results suggested that the synthesized γ-Fe2O3-GO nanocomposite can be used as a promising novel material for the removal of Ni(II) from water due to its higher adsorption capacity, stability, convenient magnetic separation and regeneration.
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spelling doaj.art-d7cf506f2e60434caeaf7dbfc70523a42022-12-21T22:54:31ZengUniversity of Novi SadProcessing and Application of Ceramics1820-61312406-10342017-12-0111424725710.2298/PAC1704247KNanocomposite of γ-Fe2O3 immobilized on graphene oxide for remediation of Ni(II) ions - Kinetics, isotherm and thermodynamics studiesManpreet Kaur Ubhi0Manpreet Kaur1Dhanwinder Singh2Jean Marc Greneche3Department of Chemistry, Punjab Agricultural University, Ludhiana-141 004, IndiaDepartment of Chemistry, Punjab Agricultural University, Ludhiana-141 004, IndiaDepartment of Soil Science, Punjab Agricultural University, Ludhiana-141 004, IndiaInstitut des Molécules et Matériaux du Mans (IMMM UMR CNRS 6283), Le Mans Université, 72085 Le Mans Cedex 9, FranceFacile sonication method was used to immobilize γ-Fe2O3 nanoparticles (NPs) on graphene oxide (GO) to obtain environmentally stable γ-Fe2O3-GO nanocomposite (NC). Structure, surface morphology and composition of NC were thoroughly studied. Mössbauer analysis confirmed the presence of maghemite (γ-Fe2O3) as dominant phase of iron oxide. TEM images of NC revealed homogeneous distribution of γ-Fe2O3 NPs over the GO nanosheet. A comparative analysis of GO, γ-Fe2O3 NPs and NC for the removal of Ni(II) ions from water was carried out by batch method and adsorption kinetics, thermodynamics and isotherms were also studied. The adsorption data fitted better to Langmuir and Freundlich adsorption isotherms as compared to Dubinin Radushkevich (D-R) and Temkin adsorption isotherms. NC showed higher qmax value (615.0 mg/g) as compared to the pristine GO (403.7 mg/g) and γ-Fe2O3 NPs (572.4 mg/g). The adsorption kinetics followed pseudo-second-order model. NC displayed greater affinity for Ni(II) ions in comparison to pristine GO and γ-Fe2O3 NPs. The results suggested that the synthesized γ-Fe2O3-GO nanocomposite can be used as a promising novel material for the removal of Ni(II) from water due to its higher adsorption capacity, stability, convenient magnetic separation and regeneration.http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2038%2002.pdfγ-Fe2O3graphene oxidenanocompositestructureadsorptionkineticsNi(II) removal
spellingShingle Manpreet Kaur Ubhi
Manpreet Kaur
Dhanwinder Singh
Jean Marc Greneche
Nanocomposite of γ-Fe2O3 immobilized on graphene oxide for remediation of Ni(II) ions - Kinetics, isotherm and thermodynamics studies
Processing and Application of Ceramics
γ-Fe2O3
graphene oxide
nanocomposite
structure
adsorption
kinetics
Ni(II) removal
title Nanocomposite of γ-Fe2O3 immobilized on graphene oxide for remediation of Ni(II) ions - Kinetics, isotherm and thermodynamics studies
title_full Nanocomposite of γ-Fe2O3 immobilized on graphene oxide for remediation of Ni(II) ions - Kinetics, isotherm and thermodynamics studies
title_fullStr Nanocomposite of γ-Fe2O3 immobilized on graphene oxide for remediation of Ni(II) ions - Kinetics, isotherm and thermodynamics studies
title_full_unstemmed Nanocomposite of γ-Fe2O3 immobilized on graphene oxide for remediation of Ni(II) ions - Kinetics, isotherm and thermodynamics studies
title_short Nanocomposite of γ-Fe2O3 immobilized on graphene oxide for remediation of Ni(II) ions - Kinetics, isotherm and thermodynamics studies
title_sort nanocomposite of γ fe2o3 immobilized on graphene oxide for remediation of ni ii ions kinetics isotherm and thermodynamics studies
topic γ-Fe2O3
graphene oxide
nanocomposite
structure
adsorption
kinetics
Ni(II) removal
url http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2038%2002.pdf
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