Efficient Removal of Lead, Copper and Cadmium Ions from Water by a Porous Calcium Alginate/Graphene Oxide Composite Aerogel

In this study, we fabricated a porous calcium alginate/graphene oxide composite aerogel by using polystyrene colloidal particles as sacrificial template and graphene oxide as a reinforcing filler. Owing to the excellent metal chelation ability of calcium alginate and controlled nanosized pore struct...

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Main Authors:	Linhai Pan, Zhuqing Wang, Qi Yang, Rongyi Huang
Format:	Article
Language:	English
Published:	MDPI AG 2018-11-01
Series:	Nanomaterials
Subjects:	Adsorbent heavy metal ions calcium alginate graphene oxide polystyrene colloidal particles template
Online Access:	https://www.mdpi.com/2079-4991/8/11/957

id	doaj-4b884bef966f4fe9962e1d95478a9879
record_format	Article
spelling	doaj-4b884bef966f4fe9962e1d95478a98792020-11-24T21:11:06ZengMDPI AGNanomaterials2079-49912018-11-0181195710.3390/nano8110957nano8110957Efficient Removal of Lead, Copper and Cadmium Ions from Water by a Porous Calcium Alginate/Graphene Oxide Composite AerogelLinhai Pan0Zhuqing Wang1Qi Yang2Rongyi Huang3AnHui Provice Key Laboratory of Optoelectronic and Magnetism Functional Materials, Anqing Normal University, Anqing 246011, ChinaAnHui Provice Key Laboratory of Optoelectronic and Magnetism Functional Materials, Anqing Normal University, Anqing 246011, ChinaAnHui Provice Key Laboratory of Optoelectronic and Magnetism Functional Materials, Anqing Normal University, Anqing 246011, ChinaAnHui Provice Key Laboratory of Optoelectronic and Magnetism Functional Materials, Anqing Normal University, Anqing 246011, ChinaIn this study, we fabricated a porous calcium alginate/graphene oxide composite aerogel by using polystyrene colloidal particles as sacrificial template and graphene oxide as a reinforcing filler. Owing to the excellent metal chelation ability of calcium alginate and controlled nanosized pore structure, the as-prepared calcium alginate/graphene oxide composite aerogel (mp-CA/GO) can reach the adsorption equilibrium in 40 min, and the maximum adsorption capacity for Pb<sup>2+</sup>, Cu<sup>2+</sup> and Cd<sup>2+</sup> is 368.2, 98.1 and 183.6 mg/g, respectively. This is higher than most of the reported heavy metal ion sorbents. Moreover, the mp-CA/GO can be regenerated through simple acid-washing and be used repeatedly with little loss in performance. The adsorption mechanism analysis indicates that the mp-CA/GO adsorb the heavy metal ions mainly through the ion exchange and chemical coordination effects.https://www.mdpi.com/2079-4991/8/11/957Adsorbentheavy metal ionscalcium alginategraphene oxidepolystyrene colloidal particles template
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Linhai Pan Zhuqing Wang Qi Yang Rongyi Huang
spellingShingle	Linhai Pan Zhuqing Wang Qi Yang Rongyi Huang Efficient Removal of Lead, Copper and Cadmium Ions from Water by a Porous Calcium Alginate/Graphene Oxide Composite Aerogel Nanomaterials Adsorbent heavy metal ions calcium alginate graphene oxide polystyrene colloidal particles template
author_facet	Linhai Pan Zhuqing Wang Qi Yang Rongyi Huang
author_sort	Linhai Pan
title	Efficient Removal of Lead, Copper and Cadmium Ions from Water by a Porous Calcium Alginate/Graphene Oxide Composite Aerogel
title_short	Efficient Removal of Lead, Copper and Cadmium Ions from Water by a Porous Calcium Alginate/Graphene Oxide Composite Aerogel
title_full	Efficient Removal of Lead, Copper and Cadmium Ions from Water by a Porous Calcium Alginate/Graphene Oxide Composite Aerogel
title_fullStr	Efficient Removal of Lead, Copper and Cadmium Ions from Water by a Porous Calcium Alginate/Graphene Oxide Composite Aerogel
title_full_unstemmed	Efficient Removal of Lead, Copper and Cadmium Ions from Water by a Porous Calcium Alginate/Graphene Oxide Composite Aerogel
title_sort	efficient removal of lead, copper and cadmium ions from water by a porous calcium alginate/graphene oxide composite aerogel
publisher	MDPI AG
series	Nanomaterials
issn	2079-4991
publishDate	2018-11-01
description	In this study, we fabricated a porous calcium alginate/graphene oxide composite aerogel by using polystyrene colloidal particles as sacrificial template and graphene oxide as a reinforcing filler. Owing to the excellent metal chelation ability of calcium alginate and controlled nanosized pore structure, the as-prepared calcium alginate/graphene oxide composite aerogel (mp-CA/GO) can reach the adsorption equilibrium in 40 min, and the maximum adsorption capacity for Pb<sup>2+</sup>, Cu<sup>2+</sup> and Cd<sup>2+</sup> is 368.2, 98.1 and 183.6 mg/g, respectively. This is higher than most of the reported heavy metal ion sorbents. Moreover, the mp-CA/GO can be regenerated through simple acid-washing and be used repeatedly with little loss in performance. The adsorption mechanism analysis indicates that the mp-CA/GO adsorb the heavy metal ions mainly through the ion exchange and chemical coordination effects.
topic	Adsorbent heavy metal ions calcium alginate graphene oxide polystyrene colloidal particles template
url	https://www.mdpi.com/2079-4991/8/11/957
work_keys_str_mv	AT linhaipan efficientremovalofleadcopperandcadmiumionsfromwaterbyaporouscalciumalginategrapheneoxidecompositeaerogel AT zhuqingwang efficientremovalofleadcopperandcadmiumionsfromwaterbyaporouscalciumalginategrapheneoxidecompositeaerogel AT qiyang efficientremovalofleadcopperandcadmiumionsfromwaterbyaporouscalciumalginategrapheneoxidecompositeaerogel AT rongyihuang efficientremovalofleadcopperandcadmiumionsfromwaterbyaporouscalciumalginategrapheneoxidecompositeaerogel
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Efficient Removal of Lead, Copper and Cadmium Ions from Water by a Porous Calcium Alginate/Graphene Oxide Composite Aerogel

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