期刊
DESALINATION AND WATER TREATMENT
卷 54, 期 10, 页码 2856-2867出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/19443994.2014.903523
关键词
Nanofiber; Heavy metal ion; Adsorption; ATRP
资金
- National Natural Science Foundation of China [5114304]
- Opening Project of State Key Laboratory of Chemical Resource Engineering [CRE-2012-C-206]
- Central University of basic scientific research project of BUCT [ZZ1112]
Poly (acrylic acid) (PAAc)-functionalized PAN nanofiber (PAN-COOH) mats were prepared via electrospinning followed by atom transfer radical polymerization for the removal of copper ions from aqueous solution. Attenuated total reflections Fourier transform infrared and X-ray photoelectron spectroscopy results confirmed the presence of PAAc layer on the surface of PAN nanofibers. The morphology of PAN-COOH nanofibers was studied by scanning electron microscopy. Adsorption results indicated that the adsorption capacity was pH dependent. Adsorption equilibrium reached within 30 min as the initial solution concentration increased from 108 to 268 mg/L, and the process can be described using the pseudo-second-order model. Isotherm data fitted well to the Langmuir isotherm model. Desorption results showed that adsorption capacity can remain up to 90% after five times usage.
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