SYNTHESIS OF CARBOXYL-MODIFIED Fe3O4@SiO2 NANOPARTICLES AND THEIR UTILIZATION FOR THE REMEDIATION OF CADMIUM AND NICKEL FROM AQUEOUS SOLUTION

ABSTRACT In the present study, general and versatile method for the functionalization of silica coated Fe3O4 nanoparticles by surface carboxylic group have been established. We have shown that malic acid functionalized magnetic nanoparticles (MA-MNPs) are an effective sorbent material for toxic meta...

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Autores principales:	GHAFOOR,SAMINA, ATA,SADIA
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2017
Materias:	Iron oxide nanoparticles adsorption heavy metals removal co-precipitation method malic acid
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000303588
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id	oai:scielo:S0717-97072017000303588
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spelling	oai:scielo:S0717-970720170003035882017-09-08SYNTHESIS OF CARBOXYL-MODIFIED Fe3O4@SiO2 NANOPARTICLES AND THEIR UTILIZATION FOR THE REMEDIATION OF CADMIUM AND NICKEL FROM AQUEOUS SOLUTIONGHAFOOR,SAMINAATA,SADIA Iron oxide nanoparticles adsorption heavy metals removal co-precipitation method malic acid ABSTRACT In the present study, general and versatile method for the functionalization of silica coated Fe3O4 nanoparticles by surface carboxylic group have been established. We have shown that malic acid functionalized magnetic nanoparticles (MA-MNPs) are an effective sorbent material for toxic metals such as cadmium and nickel. This magnetic sorbent was characterized by X-ray diffraction, scanning electron microscope and infra-red spectra. The adsorption of all studied metal ions onto Malic acid functionalized magnetic nanoparticles was found to be dependent on pH. Batch adsorption equilibrium was very fast under optimum conditions and maximum monolayer capacity, Qm, obtained from Langmuir isotherm for Cd2+ and Ni2+ were 81.627 and 63.995mgg−1, respectively at 25°C. Adsorption data were fitted well to Langmuir and Freundlich isotherm (R2 ≈ 0.99). The malic acid grafted on Fe3O4@SiO2 enhanced the adsorption capacity because of the complexing abilities of the multiple hydroxyl and carboxyl groups with metal ions.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.62 n.3 20172017-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000303588en10.4067/s0717-97072017000303588
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Iron oxide nanoparticles adsorption heavy metals removal co-precipitation method malic acid
spellingShingle	Iron oxide nanoparticles adsorption heavy metals removal co-precipitation method malic acid GHAFOOR,SAMINA ATA,SADIA SYNTHESIS OF CARBOXYL-MODIFIED Fe3O4@SiO2 NANOPARTICLES AND THEIR UTILIZATION FOR THE REMEDIATION OF CADMIUM AND NICKEL FROM AQUEOUS SOLUTION
description	ABSTRACT In the present study, general and versatile method for the functionalization of silica coated Fe3O4 nanoparticles by surface carboxylic group have been established. We have shown that malic acid functionalized magnetic nanoparticles (MA-MNPs) are an effective sorbent material for toxic metals such as cadmium and nickel. This magnetic sorbent was characterized by X-ray diffraction, scanning electron microscope and infra-red spectra. The adsorption of all studied metal ions onto Malic acid functionalized magnetic nanoparticles was found to be dependent on pH. Batch adsorption equilibrium was very fast under optimum conditions and maximum monolayer capacity, Qm, obtained from Langmuir isotherm for Cd2+ and Ni2+ were 81.627 and 63.995mgg−1, respectively at 25°C. Adsorption data were fitted well to Langmuir and Freundlich isotherm (R2 ≈ 0.99). The malic acid grafted on Fe3O4@SiO2 enhanced the adsorption capacity because of the complexing abilities of the multiple hydroxyl and carboxyl groups with metal ions.
author	GHAFOOR,SAMINA ATA,SADIA
author_facet	GHAFOOR,SAMINA ATA,SADIA
author_sort	GHAFOOR,SAMINA
title	SYNTHESIS OF CARBOXYL-MODIFIED Fe3O4@SiO2 NANOPARTICLES AND THEIR UTILIZATION FOR THE REMEDIATION OF CADMIUM AND NICKEL FROM AQUEOUS SOLUTION
title_short	SYNTHESIS OF CARBOXYL-MODIFIED Fe3O4@SiO2 NANOPARTICLES AND THEIR UTILIZATION FOR THE REMEDIATION OF CADMIUM AND NICKEL FROM AQUEOUS SOLUTION
title_full	SYNTHESIS OF CARBOXYL-MODIFIED Fe3O4@SiO2 NANOPARTICLES AND THEIR UTILIZATION FOR THE REMEDIATION OF CADMIUM AND NICKEL FROM AQUEOUS SOLUTION
title_fullStr	SYNTHESIS OF CARBOXYL-MODIFIED Fe3O4@SiO2 NANOPARTICLES AND THEIR UTILIZATION FOR THE REMEDIATION OF CADMIUM AND NICKEL FROM AQUEOUS SOLUTION
title_full_unstemmed	SYNTHESIS OF CARBOXYL-MODIFIED Fe3O4@SiO2 NANOPARTICLES AND THEIR UTILIZATION FOR THE REMEDIATION OF CADMIUM AND NICKEL FROM AQUEOUS SOLUTION
title_sort	synthesis of carboxyl-modified fe3o4@sio2 nanoparticles and their utilization for the remediation of cadmium and nickel from aqueous solution
publisher	Sociedad Chilena de Química
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000303588
work_keys_str_mv	AT ghafoorsamina synthesisofcarboxylmodifiedfe3o4sio2nanoparticlesandtheirutilizationfortheremediationofcadmiumandnickelfromaqueoussolution AT atasadia synthesisofcarboxylmodifiedfe3o4sio2nanoparticlesandtheirutilizationfortheremediationofcadmiumandnickelfromaqueoussolution
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SYNTHESIS OF CARBOXYL-MODIFIED Fe3O4@SiO2 NANOPARTICLES AND THEIR UTILIZATION FOR THE REMEDIATION OF CADMIUM AND NICKEL FROM AQUEOUS SOLUTION

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