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

Zhang, Zefei; Kim, Cholhwan; Fernandez, Carlos; Sundaram, Manickam Minakshi; Ramakrishnappa, Thippeswamy; Wang, Yuhong; Wang, Linshan; Sun, Ting; Hu, Xiaomin

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-secondorder kinetic models were used to describe the kinetics data. However, the pseudo-second-order kinetic model fitted better with the adsorption kinetics data.

Citation

ZHANG, Z., KIM, C., FERNANDEZ, C., SUNDARAM, M.M., RAMAKRISHNAPPA, T., WANG, Y., WANG, L., SUN, T. and HU, X. 2018. Adsorption removal of methylene blue from aqueous solution on carbon-coated Fe3O4 microspheres functionalized with chloroacetic acid. Science and engineering of composite materials [online], 25(2), pages 353-361. Available from: https://doi.org/10.1515/secm-2016-0138

• Journal Article Type: Article
• Acceptance Date: Jul 23, 2016
• Online Publication Date: Aug 17, 2016
• Publication Date: Mar 28, 2018
• Deposit Date: Mar 27, 2018
• Publicly Available Date: Mar 27, 2018
• Journal: Science and engineering of composite materials
• Print ISSN: 0792-1233
• Electronic ISSN: 2191-0359
• Publisher: De Gruyter
• Peer Reviewed: Peer Reviewed
• Volume: 25
• Issue: 2
• Pages: 353-361
• DOI: https://doi.org/10.1515/secm-2016-0138
• Keywords: Adsorption; Carbon coated Fe3O4 nanoparticles; Chloroacetic acid; Methylene blue
• Public URL: http://hdl.handle.net/10059/2832
• Contract Date: Mar 27, 2018