Formation of TiO2 nanotubes by thermal decomposition of poly(vinyl alcohol)-titanium alkoxide hybrid nanofibers
Formation of TiO2 nanotubes by thermal decomposition of poly(vinyl alcohol)-titanium alkoxide hybrid nanofibers
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DOI：
10.1007/s10853-006-0241-2
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发表时间：
2007-01
影响因子：
4.5
通讯作者：
K. Nakane;N. Shimada;T. Ogihara;N. Ogata;Shinji Yamaguchi
中科院分区：
文献类型：
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作者：
K. Nakane;N. Shimada;T. Ogihara;N. Ogata;Shinji Yamaguchi
以聚乙烯醇-醇钛杂化纳米纤维为原料，在空气中焙烧制备了锐钛矿型二氧化钛纳米管。500℃焙烧5h得到的纳米管的外径约为440 nm，内径约为270 nm。二氧化钛纳米管的比表面积为38.8nm2/g，氮气吸附等温线(−196°C)表明纳米管壁上存在中孔(平均孔径14.8 nm)。二氧化钛纳米管的光催化性能优于市售锐钛矿型二氧化钛纳米颗粒。
Anatase type TiO2nanotubes were formed by calcination of poly(vinyl alcohol)-Ti alkoxide hybrid precursor nanofibers in air. The outer and inner diameters of the TiO2nanotubes calcined at 500 °C for 5 h were ca. 440 nm and ca. 270 nm, respectively. The specific surface area of the TiO2nanotubes 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 TiO2nanotubes was superior to that of commercially available anatase type TiO2nanoparticles.