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首页> 外文会议>第35届纺织科学国际学术研讨会论文集 >Formation and Properties of Titanium Oxide Nanofibers Obtained from Poly (vinyl alcohol)-Titanium Compound Hybrid Nanofibers
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Formation and Properties of Titanium Oxide Nanofibers Obtained from Poly (vinyl alcohol)-Titanium Compound Hybrid Nanofibers

机译：聚乙烯醇-钛化合物杂化纳米纤维制得的氧化钛纳米纤维的形成与性能

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摘要

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°C 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°C). The photocatalysis of the TiO2 nanotubes was superior to that of commercially available anatase type TiO2 nanoparticles.
机译：氧化钛（TiO2）纳米纤维是通过在空气中煅烧聚乙烯醇（PVA）-乳酸钛杂化前驱体纳米纤维而形成的。 PVA-Ti乳酸酯杂化纳米纤维的纤维直径为200-350nm，并且TiO 2纳米纤维的纤维直径为PVA-Ti乳酸酯杂化纳米纤维的纤维直径的70-80％。在500°C下煅烧5h的TiO2纳米纤维的比表面积和平均孔径分别为21.0 m2 / g和7.4 nm。通过煅烧PVA-Ti醇盐杂化纳米纤维形成TiO2中空纳米纤维（纳米管）。在500°C下煅烧5h的TiO2纳米管的外径和内径大约为。约440 nm分别为270 nm。纳米管的比表面积为38.8m2 / g，并且通过氮吸附等温线（-196℃）表明在纳米管壁上存在中孔（平均孔径为14.8nm）。 TiO2纳米管的光催化性能优于市售锐钛矿型TiO2纳米颗粒。

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