Synthesis of diglycolic acid functionalized core-shell silica coated Fe3O4 nanomaterials for magnetic extraction of Pb(II) and Cr(VI) ions

Abstract Amine-terminated core-shell silica coated magnetite nanoparticles were functionalized with diglycolic acid for the first time to create acid moiety on the surface of the nanoparticles. The formation of magnetite nanoparticles was scrutinised through XRD, SEM, EDS, TEM, VSM and FTIR spectros...

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Autores principales:	Tehreema Nawaz, Sonia Zulfiqar, Muhammad Ilyas Sarwar, Mudassir Iqbal
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e7c81cc1f24e4608811bbe41acccc9c0
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spelling	oai:doaj.org-article:e7c81cc1f24e4608811bbe41acccc9c02021-12-02T17:45:21ZSynthesis of diglycolic acid functionalized core-shell silica coated Fe3O4 nanomaterials for magnetic extraction of Pb(II) and Cr(VI) ions10.1038/s41598-020-67168-22045-2322https://doaj.org/article/e7c81cc1f24e4608811bbe41acccc9c02020-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-67168-2https://doaj.org/toc/2045-2322Abstract Amine-terminated core-shell silica coated magnetite nanoparticles were functionalized with diglycolic acid for the first time to create acid moiety on the surface of the nanoparticles. The formation of magnetite nanoparticles was scrutinised through XRD, SEM, EDS, TEM, VSM and FTIR spectroscopy. The BET surface area of nano-sorbent was found to be 4.04 m2/g with pore size 23.68 nm. These nanomaterials were then utilized to remove the Pb(II) and Cr(VI) ions from their aqueous media and uptake of metal ions was determined by atomic absorption spectroscopy (AAS). A batch adsorption technique was applied to remove both ions at optimised pH and contact time with maximum adsorption efficiency for Pb(II) ions at pH 7 while for Cr(VI) ions at pH 3. Adsorption mechanism was studied using Langmuir and Freundlich isotherms and equilibrium data fitted well for both the isotherms, showing complex nature of adsorption comprising both chemisorption as well as physio-sorption phenomena. The nanosorbents exhibited facile separation by applying external magnetic field due to the ferrimagnetic behaviour with 31.65 emu/g saturation magnetization. These nanosorbents were also found to be used multiple times after regeneration.Tehreema NawazSonia ZulfiqarMuhammad Ilyas SarwarMudassir IqbalNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-13 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Tehreema Nawaz Sonia Zulfiqar Muhammad Ilyas Sarwar Mudassir Iqbal Synthesis of diglycolic acid functionalized core-shell silica coated Fe3O4 nanomaterials for magnetic extraction of Pb(II) and Cr(VI) ions
description	Abstract Amine-terminated core-shell silica coated magnetite nanoparticles were functionalized with diglycolic acid for the first time to create acid moiety on the surface of the nanoparticles. The formation of magnetite nanoparticles was scrutinised through XRD, SEM, EDS, TEM, VSM and FTIR spectroscopy. The BET surface area of nano-sorbent was found to be 4.04 m2/g with pore size 23.68 nm. These nanomaterials were then utilized to remove the Pb(II) and Cr(VI) ions from their aqueous media and uptake of metal ions was determined by atomic absorption spectroscopy (AAS). A batch adsorption technique was applied to remove both ions at optimised pH and contact time with maximum adsorption efficiency for Pb(II) ions at pH 7 while for Cr(VI) ions at pH 3. Adsorption mechanism was studied using Langmuir and Freundlich isotherms and equilibrium data fitted well for both the isotherms, showing complex nature of adsorption comprising both chemisorption as well as physio-sorption phenomena. The nanosorbents exhibited facile separation by applying external magnetic field due to the ferrimagnetic behaviour with 31.65 emu/g saturation magnetization. These nanosorbents were also found to be used multiple times after regeneration.
format	article
author	Tehreema Nawaz Sonia Zulfiqar Muhammad Ilyas Sarwar Mudassir Iqbal
author_facet	Tehreema Nawaz Sonia Zulfiqar Muhammad Ilyas Sarwar Mudassir Iqbal
author_sort	Tehreema Nawaz
title	Synthesis of diglycolic acid functionalized core-shell silica coated Fe3O4 nanomaterials for magnetic extraction of Pb(II) and Cr(VI) ions
title_short	Synthesis of diglycolic acid functionalized core-shell silica coated Fe3O4 nanomaterials for magnetic extraction of Pb(II) and Cr(VI) ions
title_full	Synthesis of diglycolic acid functionalized core-shell silica coated Fe3O4 nanomaterials for magnetic extraction of Pb(II) and Cr(VI) ions
title_fullStr	Synthesis of diglycolic acid functionalized core-shell silica coated Fe3O4 nanomaterials for magnetic extraction of Pb(II) and Cr(VI) ions
title_full_unstemmed	Synthesis of diglycolic acid functionalized core-shell silica coated Fe3O4 nanomaterials for magnetic extraction of Pb(II) and Cr(VI) ions
title_sort	synthesis of diglycolic acid functionalized core-shell silica coated fe3o4 nanomaterials for magnetic extraction of pb(ii) and cr(vi) ions
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/e7c81cc1f24e4608811bbe41acccc9c0
work_keys_str_mv	AT tehreemanawaz synthesisofdiglycolicacidfunctionalizedcoreshellsilicacoatedfe3o4nanomaterialsformagneticextractionofpbiiandcrviions AT soniazulfiqar synthesisofdiglycolicacidfunctionalizedcoreshellsilicacoatedfe3o4nanomaterialsformagneticextractionofpbiiandcrviions AT muhammadilyassarwar synthesisofdiglycolicacidfunctionalizedcoreshellsilicacoatedfe3o4nanomaterialsformagneticextractionofpbiiandcrviions AT mudassiriqbal synthesisofdiglycolicacidfunctionalizedcoreshellsilicacoatedfe3o4nanomaterialsformagneticextractionofpbiiandcrviions
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Synthesis of diglycolic acid functionalized core-shell silica coated Fe3O4 nanomaterials for magnetic extraction of Pb(II) and Cr(VI) ions

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