Formation and Properties of Titanium Oxide Nanofibers Obtained from Poly (vinyl alcohol)-Titanium Compound Hybrid Nanofibers
Titanium oxide (TiO2) nanofibers were formed by calcination of poly (vinyl alcohol) (PVA)-Ti lactate hybrid precursor nanofibers in air. The fiber diameters of the PVA-Ti lactate hybrid nanofibers were 200-350 nm, and the fiber diameters of the TiO2 nanofibers were 70-80％ of those of the PVA-Ti lactate hybrid nanofibers. The specific surface area and average pore diameter of the TiO2 nanofibers calcined at 500℃ for 5 h were 21.0 m2/g and 7.4 nm, respectively. TiO2 hollow-nanofibers (nanotubes) were formed by calcination of PVA-Ti alkoxide hybrid nanofibers. The outer and inner diameters of the TiO2 nanotubes calcined at 500 C for 5 h were ca. 440 nm and ca. 270 nm, respectively. The specific surface area of the nanotubes was 38.8 m2/g, and the existence of mesopores (average pore diameter, 14.8 nm) on the nanotube wall was indicated by the nitrogen adsorption isotherm ( -196℃). The photocatalysis of the TiO2 nanotubes was superior to that of commercially available anatase type TiO2 nanoparticles.
Titanium oxide Hybrid nanofibers Photocatalysis
Koji Nakane Takashi Ogihara Nobuo Ogata Shinji Yamaguchi
University of Fukui, Bunkyo 3-9-1, Fukui, 910-8507, Japan
国际会议
杭州
英文
60-66
2006-08-22（万方平台首次上网日期，不代表论文的发表时间）