title: Efficient Photocatalytic Activities of TiO2 Hollow Fibers with Mixed Phases and Mesoporous Walls.
abstract: Currently, Degussa P25, with the typical mixed phases of anatase and rutile TiO2, is widely applied as the commercial photocatalysts. However, there are still some of obstacles for the P25 nanoparticles with totally high photocatalytic activities, especially for the catalytic stability due to their inevitable aggregation of the nanoparticles when used as the photocatalysts. In the present work, we reported the exploration of a novel TiO2 photocatalyst, which could offer an ideal platform for synergetic combination of the mixed-phase composition, hollow architecture and mesoporous walls for the desired excellent photocatalytic efficiency and robust stability. The mesoporous TiO2 hollow nanofibers were fabricated via a facile single capillary electrospinning technique, in which the foaming agents were used for creating mesopores throughout the walls of the hollow fibers. The obtained hollow fibers exhibit a high purity and possess the mixed phases of 94.6% anatase and 5.4% rutile TiO2. As compared to P25, the as-fabricated mesoporous TiO2 hollow fibers exhibited much higher efficient photocatalytic activities and stabilities toward the hydrogen evolution with a rate of ~499.1 μmol g(-1)·h(-1) and ~99.5% degradation Rhodamine B (RhB) in 60 min, suggesting their promising application in efficient photocatalysts.
authors.affiliation: Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan City, 030024, P.R. China.|Institute of Materials, Ningbo University of Technology, Ningbo City, 315016, P.R. China.
authors.forename: Huilin
authors.initials: H
authors.lastname: Hou
authors.affiliation: Institute of Materials, Ningbo University of Technology, Ningbo City, 315016, P.R. China.
authors.forename: Minghui
authors.initials: M
authors.lastname: Shang
authors.affiliation: Institute of Materials, Ningbo University of Technology, Ningbo City, 315016, P.R. China.
authors.forename: Lin
authors.initials: L
authors.lastname: Wang
authors.affiliation: Merchant Marine College, Shanghai Maritime University, Shanghai City, 201306, P.R. China.
authors.forename: Wenge
authors.initials: W
authors.lastname: Li
authors.affiliation: Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan City, 030024, P.R. China.
authors.forename: Bin
authors.initials: B
authors.lastname: Tang
authors.affiliation: Institute of Materials, Ningbo University of Technology, Ningbo City, 315016, P.R. China.
authors.forename: Weiyou
authors.initials: W
authors.lastname: Yang