Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (17): 1713-1718. Previous Articles     Next Articles

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在一种新的溶剂体系中通过静电纺丝制备TiO2纳米纤维

梁建鹤,杨锦霞,黄应兴,刘海清   

  1. (福建师范大学化学与材料学院 福建省高分子材料重点实验室 福州 350007)
  • 收稿日期:2009-10-28 修回日期:2010-03-23 出版日期:2010-09-14 发布日期:2010-04-20
  • 通讯作者: 刘海清 E-mail:haiqing.liu@gmail.com
  • 基金资助:

    国家自然科学基金(批准号:50973019,50843030)和福建省自然科学基金(批准号:2006J0011)资助项目

Fabrication of TiO2 Nanofibers in a Novel Solvent System Through Electrospinning

LIANG Jian-He, YANG Jin-Xia, HUANG Ying-Xing, LIU Hai-Qing   

  1. (College of Chemistry and Materials Science of Fujian Normal University, Key Laboratory of Polymer Materials of Fujian Province, Fuzhou 350007)
  • Received:2009-10-28 Revised:2010-03-23 Online:2010-09-14 Published:2010-04-20

Anatase TiO2 nanofibers were synthesized through electrospinning a precursor solution of tetrabutyl titanate in acetone/N,N-dimethylacetamide (DMAc), using cellulose acetate as the carrying polymer. Anatase TiO2 nanofibers of ca. 80 nm in diameter were obtained after post-electrospinning treatment steps including hydrolysis and calcination at 450 ℃. The morphology and structure of TiO2 nanofibers were characterized by SEM, TEM, XRD and N2 adsorption-desorption techniques. TiO2 nanofibers were composed of grain-like nanoparticles of ca. 9.2 nm in diameter. They showed mesoporous structure with pore size of 1.7~21 nm. The specific surface area of the TiO2 nanofibers was ca. 50 m2/g. This is close to that of commercial Degussa P25. Their photocatalytic decomposition efficiency toward organic molecules such as Rhodamine B (RhB) and phenol was tested under the irradiation of ultraviolet at 365 nm. With the loading of 0.05% (w) TiO2 nanofibrous mats in 6 mg/L RhB and 10 mg/L phenol aq. solutions, about 90% of RhB and 75% of phenol were decomposed, respectively, under 500 W UV light for less than 2 h.

Key words: electrospinning, nanofiber, TiO2, photocatalyst