title: Spontaneous phase and morphology transformations of anodized titania nanotubes induced by water at room temperature.
abstract: We report a spontaneous phase transformation of titania nanotubes induced by water at room temperature, which enables the as-anodized amorphous nanotubes to be crystallized into anatase mesoporous nanowires without any other post-treatments. These mesoporous TiO(2) nanomaterials have a markedly improved surface area, about 5.5 times than that of the as-anodized TiO(2) nanotubes, resulting in a pronounced enhanced photocatalytic activity. The present approach not only allows a flexible control over the morphology of TiO(2) nanostructures but can fundamentally eliminate the need for high temperature operations for crystallizing amorphous TiO(2).
authors.affiliation: Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle, Germany. dwang@chemsys.t.u-tokyo.ac.jp
authors.forename: Daoai
authors.initials: D
authors.lastname: Wang
authors.forename: Lifeng
authors.initials: L
authors.lastname: Liu
authors.forename: Fuxiang
authors.initials: F
authors.lastname: Zhang
authors.forename: Kun
authors.initials: K
authors.lastname: Tao
authors.forename: Eckhard
authors.initials: E
authors.lastname: Pippel
authors.forename: Kazunari
authors.initials: K
authors.lastname: Domen