期刊
COLLOIDS AND SURFACES B-BIOINTERFACES
卷 136, 期 -, 页码 375-382出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfb.2015.09.038
关键词
Sericin; beta-cyclodextrin; Electrospinning; Adsorption; Methylene blue
资金
- National Key Technology Research and Development Program [2013BAC01B02]
- National Natural Science Foundation of China [21274052, 51303060]
- Jilin Provincial Science and Technology Department Project [20130206064GX]
- Research Fund for the Doctoral Program of Higher Education of China [20120061120017]
- Changchun City Science and Technology Department Project [13KG32]
A novel water-insoluble sericin/beta-cyclodextrin/poly (vinyl alcohol) composite nanofiber adsorbent was prepared by electrospinning and followed by thermal crosslinking for removal of cationic dye methylene blue from aqueous solution. Fourier transform infrared spectroscopy and solubility experiments confirmed that sericin and beta-cyclodextrin were incorporated into the nanofibers and the crosslinking reaction occurred successfully. Kinetics, isotherms and thermodynamics analysis were studied for adsorption of methylene blue. The adsorption process is better fitted with the pseudo-second-order model and Langmuir isotherm model. The maximum adsorption capacities are 187.97, 229.89, and 261.10 mg/g at the temperatures 293,313 and 333 K, respectively. Thermodynamic parameters showed that methylene blue adsorption was endothermic and spontaneous. In addition, the fiber membrane adsorbent could be easily separated from dye solution and showed high recyclable removal efficiency. All these results suggest that crosslinked sericin/beta-cyclodextrin/poly(vinyl alcohol) composite nanofibers could be potential recyclable adsorbents in dye wastewater treatment. (C) 2015 Elsevier B.V. All rights reserved.
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