title: Photo-degradation of acid-red 3B dye catalyzed by TiO2 nanotubes.
abstract: TiO2 nanotube precursor was synthesized by the hydrothermal reaction of TiO2 powders with NaOH solution and the properties of the nanotube materials were tuned using different post-treatments. Transmission electron microscopic (TEM) observation revealed that the nanotube could be obtained by either a direct rinse with acid solution or rinse with distilled water followed by acid solution. The results of X-ray diffraction (XRD) and inductively coupled plasma (ICP) analysis indicated that the nanotube material was composed of H2Ti2O5 x H2O. In addition, the photocatalytic activities of the resulting catalysts were found to be strongly dependent on the post-treatment. The results of the photocatalytic reaction showed that the degradation of Acid-red 3B dye fitted pseudo-zero-order kinetics and TiO2 nanotube prepared under direct rinse with acid solution exhibited a higher catalytic efficiency compared to other catalysts.
authors.affiliation: State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Jiang
authors.forename: Shou-rong
authors.initials: SR
authors.lastname: Zheng
authors.forename: Zheng
authors.initials: Z
authors.lastname: Zheng
authors.forename: Zhao-yi
authors.initials: ZY
authors.lastname: Xu
authors.forename: Yan-jin
authors.initials: YJ
authors.lastname: Wang
mesh_terms: D001391:Azo Compounds; D004787:Environmental Pollution / Q000517:prevention & control*; D005456:Fluorescent Dyes / Q000737:chemistry*; D007700:Kinetics; D046529:Microscopy, Electron, Transmission; D043942:Nanotubes / Q000737:chemistry*; D010782:Photolysis; D012235:Rhodamines / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D001391:Azo Compounds; D005456:Fluorescent Dyes; D012235:Rhodamines; C009495:titanium dioxide; C022027:lissamine rhodamine B; D014025:Titanium