title: Large oriented arrays and continuous films of TiO(2)-based nanotubes.
abstract: We report for the first time a one-step, templateless method to directly prepare large arrays of oriented TiO2-based nanotubes and continuous films. These titania nanostructures can also be easily prepared as conformal coatings on a substrate. The nanostructured films were formed on a Ti substrate seeded with TiO2 nanoparticles. SEM and TEM results suggested that a folding mechanism of sheetlike structures was involved in the formation of the nanotubes. The oriented arrays of TiO2 nanotubes, continuous films, and coatings are expected to have potentials for applications in catalysis, filtration, sensing, photovoltaic cells, and high surface area electrodes.
authors.affiliation: Sandia National Laboratories, Albuquerque, New Mexico 87185, and University of New Mexico, Albuquerque, New Mexico 87131, USA.
authors.forename: Zhengrong R
authors.initials: ZR
authors.lastname: Tian
authors.forename: James A
authors.initials: JA
authors.lastname: Voigt
authors.forename: Jun
authors.initials: J
authors.lastname: Liu
authors.forename: Bonnie
authors.initials: B
authors.lastname: McKenzie
authors.forename: Huifang
authors.initials: H
authors.lastname: Xu