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

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College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
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College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
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Author to whom correspondence should be addressed.
Academic Editor: Rafael Luque Alvarez de Sotomayor
Materials 2017, 10(1), 58; https://doi.org/10.3390/ma10010058
Received: 7 December 2016 / Revised: 27 December 2016 / Accepted: 9 January 2017 / Published: 11 January 2017
(This article belongs to the Section Porous Materials)
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. View Full-Text
Keywords: graphene oxide; carboxymethyl chitosan; magnetic composite microspheres; adsorption graphene oxide; carboxymethyl chitosan; magnetic composite microspheres; adsorption
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MDPI and ACS Style

Lv, S.; Zhu, L.; Li, Y.; Jia, C.; Sun, S. The Adsorption Capacity of GONs/CMC/Fe3O4 Magnetic Composite Microspheres and Applications for Purifying Dye Wastewater. Materials 2017, 10, 58.

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