期刊
MATERIALS LETTERS
卷 64, 期 11, 页码 1295-1298出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2010.03.012
关键词
Electrospinning; Nanofibers membrane; Nanomaterials; Fiber technology; Mesoporous; Adsorption
资金
- State Key Special Funds for Water Program [2008ZX07421-002]
- China-American Cooperation [2009DFA90740]
- Ministry of Science and Technology
- Science & Technology Commission, Shanghai
Membranes of poly vinyl alcohol (PVA)/silica functionalized with mercapto groups are synthesized by electrospinning. Scanning electron microscopy (SEM) studies showed that the fiber diameters are in the range of 200-300 nm. The thickness of nanofiber decreases with an increase in calcination temperature. The results of Fourier transform infrared (FTIR) indicated that PVA/silica nanofibers are functionalized by mercapto groups via the hydrolysis poly-condensation method. N-2 adsorption-desorption showed that organic molecules can be removed completely when the PVA/silica composite fibers are calcinated at 800 degrees C. The fibers calcinated at 800 degrees C were pure inorganic silica species with a mesoporous structure. These mercapto groups functionalized PVA/silica nanofibers have a great potential application in the field of. adsorption of heavy metal ions. (C) 2010 Published by Elsevier B.V.
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