The Preparation of TiO_2 Nanofibers and Study of Its Photocatalytic Activity

Polyvinyl pyrrolidone(PVP) nanofibers were prepared by electrospinning.Then PVP nanofibers were used as template and tetrabutyl titanate(Ti(OC4H9)4) as precursor of titania nanofibers.Pure tatania nanofibers had been successfully fabricated by calcination in air at different high temperature.TiO2 nanofibers calcined at 500 ℃ were pure anatase.When calcined at 600 ℃,TiO2 nanofibers were anatase with small amount of rutile.The photocatalytic activity of TiO2 nanofibers was studied.It was found that the photocatalytic activity of TiO2 nanofibers of anatase with small amount of rutile was higher than that of pure anatase.