Removal of Mn (II) by Sodium Alginate/Graphene Oxide Composite Double-Network Hydrogel Beads from Aqueous Solutions

Abstract After the successful preparation of empirical double network hydrogel beads from graphene oxide/sodium alginate(GO/SA), its cationic metal adsorption performance in aqueous solutions were investigated. Taking Mn(II) as an example, the contribution of several factors including pH, bead dosag...

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Main Authors:	Xiuzhen Yang, Tengzhi Zhou, Bozhi Ren, Andrew Hursthouse, Yuezhou Zhang
Format:	article
Language:	EN
Published:	Nature Portfolio 2018
Subjects:	Medicine R Science Q
Online Access:	https://doaj.org/article/c7b8feea16854225bdb831288627b5aa
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spelling	oai:doaj.org-article:c7b8feea16854225bdb831288627b5aa2021-12-02T12:31:57ZRemoval of Mn (II) by Sodium Alginate/Graphene Oxide Composite Double-Network Hydrogel Beads from Aqueous Solutions10.1038/s41598-018-29133-y2045-2322https://doaj.org/article/c7b8feea16854225bdb831288627b5aa2018-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-29133-yhttps://doaj.org/toc/2045-2322Abstract After the successful preparation of empirical double network hydrogel beads from graphene oxide/sodium alginate(GO/SA), its cationic metal adsorption performance in aqueous solutions were investigated. Taking Mn(II) as an example, the contribution of several factors including pH, bead dosage, temperature, contact time and initial concentration ions to adsorption efficiency were examined. The Transmission Electron Microscopy (TEM) results indicate that the GO/SA double (GAD) network hydrogel bead strongly interpenetrate and the adsorption of Mn(II) is mainly influenced by solution pH, bead dose and temperature. The GAD beads exhibit an excellent adsorption capacity of 56.49 mg g−1. The adsorption process fit both Pseudo-second order kinetic model (R2 > 0.97) and the Freundlich adsorption isotherm (R2 > 0.99) and is spontaneous. After seven rounds of adsorption-desorption cycle, the adsorption capacity of GAD hydrogel remained unchanged at 18.11 mg/g.Xiuzhen YangTengzhi ZhouBozhi RenAndrew HursthouseYuezhou ZhangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-16 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xiuzhen Yang Tengzhi Zhou Bozhi Ren Andrew Hursthouse Yuezhou Zhang Removal of Mn (II) by Sodium Alginate/Graphene Oxide Composite Double-Network Hydrogel Beads from Aqueous Solutions
description	Abstract After the successful preparation of empirical double network hydrogel beads from graphene oxide/sodium alginate(GO/SA), its cationic metal adsorption performance in aqueous solutions were investigated. Taking Mn(II) as an example, the contribution of several factors including pH, bead dosage, temperature, contact time and initial concentration ions to adsorption efficiency were examined. The Transmission Electron Microscopy (TEM) results indicate that the GO/SA double (GAD) network hydrogel bead strongly interpenetrate and the adsorption of Mn(II) is mainly influenced by solution pH, bead dose and temperature. The GAD beads exhibit an excellent adsorption capacity of 56.49 mg g−1. The adsorption process fit both Pseudo-second order kinetic model (R2 > 0.97) and the Freundlich adsorption isotherm (R2 > 0.99) and is spontaneous. After seven rounds of adsorption-desorption cycle, the adsorption capacity of GAD hydrogel remained unchanged at 18.11 mg/g.
format	article
author	Xiuzhen Yang Tengzhi Zhou Bozhi Ren Andrew Hursthouse Yuezhou Zhang
author_facet	Xiuzhen Yang Tengzhi Zhou Bozhi Ren Andrew Hursthouse Yuezhou Zhang
author_sort	Xiuzhen Yang
title	Removal of Mn (II) by Sodium Alginate/Graphene Oxide Composite Double-Network Hydrogel Beads from Aqueous Solutions
title_short	Removal of Mn (II) by Sodium Alginate/Graphene Oxide Composite Double-Network Hydrogel Beads from Aqueous Solutions
title_full	Removal of Mn (II) by Sodium Alginate/Graphene Oxide Composite Double-Network Hydrogel Beads from Aqueous Solutions
title_fullStr	Removal of Mn (II) by Sodium Alginate/Graphene Oxide Composite Double-Network Hydrogel Beads from Aqueous Solutions
title_full_unstemmed	Removal of Mn (II) by Sodium Alginate/Graphene Oxide Composite Double-Network Hydrogel Beads from Aqueous Solutions
title_sort	removal of mn (ii) by sodium alginate/graphene oxide composite double-network hydrogel beads from aqueous solutions
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/c7b8feea16854225bdb831288627b5aa
work_keys_str_mv	AT xiuzhenyang removalofmniibysodiumalginategrapheneoxidecompositedoublenetworkhydrogelbeadsfromaqueoussolutions AT tengzhizhou removalofmniibysodiumalginategrapheneoxidecompositedoublenetworkhydrogelbeadsfromaqueoussolutions AT bozhiren removalofmniibysodiumalginategrapheneoxidecompositedoublenetworkhydrogelbeadsfromaqueoussolutions AT andrewhursthouse removalofmniibysodiumalginategrapheneoxidecompositedoublenetworkhydrogelbeadsfromaqueoussolutions AT yuezhouzhang removalofmniibysodiumalginategrapheneoxidecompositedoublenetworkhydrogelbeadsfromaqueoussolutions
_version_	1718394241764294656

Removal of Mn (II) by Sodium Alginate/Graphene Oxide Composite Double-Network Hydrogel Beads from Aqueous Solutions

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