title: Water-plasma-assisted synthesis of black titania spheres with efficient visible-light photocatalytic activity.
abstract: Black titania spheres (H-TiO2-x) were synthesized via a simple green method assisted by water plasma at a low temperature and atmospheric pressure. The in situ production of highly energetic hydroxyl and hydrogen species from water plasma are the prominent factors in the oxidation and hydrogenation reactions during the formation of H-TiO2-x, respectively. The visible-light photocatalytic activity toward the dye degradation of H-TiO2-x can be attributed to the synergistic effect of large-surface area, visible-light absorption and the existence of oxygen vacancies and Ti(3+) sites.
authors.affiliation: Department of Materials Science and Engineering, Faculty of Engineering, Shibaura Institute of Technology, Tokyo 135-8548, Japan. i036050@sic.shibaura-it.ac.jp g.panomsuwan@gmail.com.
authors.forename: Gasidit
authors.initials: G
authors.lastname: Panomsuwan
authors.forename: Anyarat
authors.initials: A
authors.lastname: Watthanaphanit
authors.forename: Takahiro
authors.initials: T
authors.lastname: Ishizaki
authors.forename: Nagahiro
authors.initials: N
authors.lastname: Saito
mesh_terms: D002384:Catalysis; D003080:Cold Temperature; D055772:Green Chemistry Technology; D006859:Hydrogen / Q000737:chemistry*; D006865:Hydrogenation; D017665:Hydroxyl Radical / Q000737:chemistry*; D008027:Light; D008958:Models, Molecular; D010084:Oxidation-Reduction; D014025:Titanium / Q000737:chemistry*; D014867:Water / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D014867:Water; C009495:titanium dioxide; D017665:Hydroxyl Radical; D006859:Hydrogen; D014025:Titanium