The Adsorption Capacity of GONs/CMC/Fe3O4 Magnetic Composite Microspheres and Applications for Purifying Dye Wastewater

The Adsorption Capacity of GONs/CMC/Fe3O4 Magnetic Composite Microspheres and Applications for Purifying Dye Wastewater

Graphene oxide nanosheets (GONs)/carboxymethyl chitosan (CMC)/Fe3O4 magnetic composite microspheres (MCMs) were prepared by enclosing Fe3O4 particles with CMC and GONs in turn. The microstructures of GONs and GONs/CMC/Fe3O4 MCMs were characterized by FTIR, XRD, TEM, and SEM. The effects of GON conte...

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Main Authors: Shenghua Lv, Linlin Zhu, Ying Li, Chunmao Jia, Shiyu Sun
Format: Article
Language:English
Published: MDPI AG 2017-01-01
Series:Materials
Subjects:
graphene oxide
carboxymethyl chitosan
magnetic composite microspheres
adsorption
Online Access:http://www.mdpi.com/1996-1944/10/1/58
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spelling doaj-a3a90c1ea0d540b994319ec06051850f2020-11-24T22:23:13ZengMDPI AGMaterials1996-19442017-01-011015810.3390/ma10010058ma10010058The Adsorption Capacity of GONs/CMC/Fe3O4 Magnetic Composite Microspheres and Applications for Purifying Dye WastewaterShenghua Lv0Linlin Zhu1Ying Li2Chunmao Jia3Shiyu Sun4College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi’an 710021, ChinaCollege of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi’an 710021, ChinaCollege of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi’an 710021, ChinaCollege of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, ChinaCollege of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi’an 710021, ChinaGraphene oxide nanosheets (GONs)/carboxymethyl chitosan (CMC)/Fe3O4 magnetic composite microspheres (MCMs) were prepared by enclosing Fe3O4 particles with CMC and GONs in turn. The microstructures of GONs and GONs/CMC/Fe3O4 MCMs were characterized by FTIR, XRD, TEM, and SEM. The effects of GON content, pH value, and adsorption time on the adsorption capacity of the MCMs were investigated. The results show that the GONs/CMC/Fe3O4 MCMs have a greater specific surface area and a strong adsorption capacity for dye wastewater. Meanwhile, the adsorption mechanism was investigated, and the results accorded with the pseudo-second-order kinetic model and the Freundlich isotherm model. The search results indicate that GONs/CMC/Fe3O4 MCMs can be used to purify dye wastewater and has an important potential use in the practical purification of dye wastewater.http://www.mdpi.com/1996-1944/10/1/58graphene oxidecarboxymethyl chitosanmagnetic composite microspheresadsorption
collection DOAJ
language English
format Article
sources DOAJ
author Shenghua Lv
Linlin Zhu
Ying Li
Chunmao Jia
Shiyu Sun
spellingShingle Shenghua Lv
Linlin Zhu
Ying Li
Chunmao Jia
Shiyu Sun
The Adsorption Capacity of GONs/CMC/Fe3O4 Magnetic Composite Microspheres and Applications for Purifying Dye Wastewater
Materials
graphene oxide
carboxymethyl chitosan
magnetic composite microspheres
adsorption
author_facet Shenghua Lv
Linlin Zhu
Ying Li
Chunmao Jia
Shiyu Sun
author_sort Shenghua Lv
title The Adsorption Capacity of GONs/CMC/Fe3O4 Magnetic Composite Microspheres and Applications for Purifying Dye Wastewater
title_short The Adsorption Capacity of GONs/CMC/Fe3O4 Magnetic Composite Microspheres and Applications for Purifying Dye Wastewater
title_full The Adsorption Capacity of GONs/CMC/Fe3O4 Magnetic Composite Microspheres and Applications for Purifying Dye Wastewater
title_fullStr The Adsorption Capacity of GONs/CMC/Fe3O4 Magnetic Composite Microspheres and Applications for Purifying Dye Wastewater
title_full_unstemmed The Adsorption Capacity of GONs/CMC/Fe3O4 Magnetic Composite Microspheres and Applications for Purifying Dye Wastewater
title_sort adsorption capacity of gons/cmc/fe3o4 magnetic composite microspheres and applications for purifying dye wastewater
publisher MDPI AG
series Materials
issn 1996-1944
publishDate 2017-01-01
description Graphene oxide nanosheets (GONs)/carboxymethyl chitosan (CMC)/Fe3O4 magnetic composite microspheres (MCMs) were prepared by enclosing Fe3O4 particles with CMC and GONs in turn. The microstructures of GONs and GONs/CMC/Fe3O4 MCMs were characterized by FTIR, XRD, TEM, and SEM. The effects of GON content, pH value, and adsorption time on the adsorption capacity of the MCMs were investigated. The results show that the GONs/CMC/Fe3O4 MCMs have a greater specific surface area and a strong adsorption capacity for dye wastewater. Meanwhile, the adsorption mechanism was investigated, and the results accorded with the pseudo-second-order kinetic model and the Freundlich isotherm model. The search results indicate that GONs/CMC/Fe3O4 MCMs can be used to purify dye wastewater and has an important potential use in the practical purification of dye wastewater.
topic graphene oxide
carboxymethyl chitosan
magnetic composite microspheres
adsorption
url http://www.mdpi.com/1996-1944/10/1/58
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