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Adsorption removal of methylene blue from aqueous solution on carbon-coated Fe3O4 microspheres functionalized with chloroacetic acid

Zhang, Z., Kim, C., Fernandez, C., Minakshi Sundaram, M., Ramakrishnappa, T., Wang, Y., Wang, L., Sun, T. and Hu, X. (2016) Adsorption removal of methylene blue from aqueous solution on carbon-coated Fe3O4 microspheres functionalized with chloroacetic acid. Science and Engineering of Composite Materials, 25 (2). pp. 353-361.

Link to Published Version: https://doi.org/10.1515/secm-2016-0138
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Abstract

We report the preparation and employability of carbon-coated Fe3O4 (Fe3O4/C) microspheres functionalized with chloroacetic acid (CAA) for the removal of methylene blue (MB) in aqueous solution. The prepared magnetic microspheres (Fe3O4/C-CAA) were characterized by the following techniques: X-ray diffraction, transmission electron microscopy, Fourier-transform infrared spectrometer, vibrating sample magnetometry, and Brunauer-Emmett-Teller. The characterization results showed that Fe3O4/C microspheres were modified by CAA without any phase change. Fe3O4/C-CAA microspheres have higher adsorption capacity for MB compared to Fe3O4/C microspheres. The Langmuir, Freundlich, and Temkin adsorption models were applied to describe the equilibrium isotherms, and the Langmuir adsorption model fitted well with the equilibrium data. The pseudo-first-order and pseudo-second-order kinetic models were used to describe the kinetics data. However, the pseudo-second-order kinetic model fitted better with the adsorption kinetics data.

Publication Type: Journal Article
Murdoch Affiliation: School of Engineering and Information Technology
Publisher: Walter de Gruyter
Copyright: © 2018 Walter de Gruyter
URI: http://researchrepository.murdoch.edu.au/id/eprint/40531
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