title: Synthesis, characterization and photocatalytic activity of mesoporous titania nanorod/titanate nanotube composites.
abstract: Mesoporous titania nanorod/titanate nanotube composites were prepared using TiF4 and H(3)BO(3) as the precursors. The prepared samples were characterized with TEM, SEM, XRD, HRTEM, and nitrogen adsorption-desorption isotherms. The photocatalytic activities were evaluated by photocatalytic oxidation of acetone in a gas phase and photocatalytic discolorization of methyl orange aqueous solution in an aqueous phase, respectively. The results indicated that the photocatalytic activity of the mesoporous titania nanorod/titanate nanotube composites exceeded that of P25 by a factor of about 2.5 times for the photocatalytic oxidation of acetone. This could be attributed to the fact that the former had a larger specific surface area and a higher pore volume. Moreover, the mesoporous titania nanorod/titanate nanotube composites, which could be readily separated after photocatalytic reaction in an aqueous phase, exhibited highly photocatalytic activity for the degradation of methyl orange aqueous solution.
authors.affiliation: State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122#, Wuhan 430070, PR China.
authors.forename: Huogen
authors.initials: H
authors.lastname: Yu
authors.forename: Jiaguo
authors.initials: J
authors.lastname: Yu
authors.forename: Bei
authors.initials: B
authors.lastname: Cheng
authors.forename: Jun
authors.initials: J
authors.lastname: Lin
mesh_terms: D000096:Acetone; D000327:Adsorption; D001391:Azo Compounds / Q000302:isolation & purification; D002384:Catalysis; D052918:Environmental Restoration and Remediation / Q000379:methods*; D049329:Nanostructures / Q000737:chemistry*; D010084:Oxidation-Reduction; D010777:Photochemistry; D016062:Porosity; D014025:Titanium / Q000737:chemistry*; D014873:Water Pollutants / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods
chemical_list: D001391:Azo Compounds; D014873:Water Pollutants; D000096:Acetone; C009495:titanium dioxide; C100258:methyl orange; D014025:Titanium