Polydopamine-modification of a magnetic composite constructed from citric acid–cross-linked cyclodextrin and graphene oxide for dye removal from waters
Hu Q.-D. Jiang H.-L. Lam K.-H. Hu Z.-P. Liu Z.-J. Wang H.-Y. Yang Y.-Y. Baigenzhenov O. Hosseini-Bandegharaei A. He F.-A.
July 2023Springer Science and Business Media Deutschland GmbH
Environmental Science and Pollution Research
2023#30Issue 3278521 - 78536 pp.
The effect of polydopamine (PDA) modification on aminated Fe3O4 nanoparticles (Fe3O4-NH2)/graphite oxide (GO)/β-cyclodextrin polymer cross-linked by citric acid (CDP-CA) composites were studied for the removal of a cationic dye (methylene blue, MB) and an anionic dye (Congo red, CR) from waters. The micro-structural and magnetic characterizations confirmed the successful preparation of Fe3O4-NH2/GO/CDP-CA and PDA/Fe3O4-NH2/GO/CDP-CA composites. The maximum MB and CR adsorption capacities of Fe3O4-NH2/GO/CDP-CA were 75 mg/g and 104 mg/g, respectively, while the corresponding amounts for PDA/Fe3O4-NH2/GO/CDP-CA composite were 195 mg/g and 64 mg/g, respectively. The dye sorption behaviors of these two composites were explained by their corresponding surface-charged properties according to the measured zeta potential results. Moreover, the high saturation magnetizations and the stable dye removal rate in the adsorption–desorption cycles indicated the good recyclability and reusability of the fabricated composites. Graphical abstract: [Figure not available: see fulltext.].
Composite , Dye sorption , Fe3O4 nanoparticles , Graphite oxide , Polydopamine , β-Cyclodextrin polymer
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School of Materials Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang, 330069, China
Centre for Medical and Industrial Ultrasonics, James Watt School of Engineering, University of Glasgow, Glasgow, United Kingdom
Department of Metallurgical Engineering, Satbayev University, Almaty, Kazakhstan
Faculty of Chemistry, Semnan University, Semnan, Iran
School of Materials Science and Engineering
School of Materials Science and Engineering
Centre for Medical and Industrial Ultrasonics
Department of Metallurgical Engineering
Faculty of Chemistry
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