title: Preparation of TiO2 thin films using octadecylamine Langmuir-Blodgett films and evaluation of their photocatalytic activity.
abstract: A study was conducted to demonstrate that nanometer-thick titanium dioxide (TiO(2)) thin films could be prepared by the hydrolysis of titanium potassium oxalate using octadecylamine (ODA) Langmuir-Blodgett (LB) films as templates. The amount of TiO(2) generated in the LB film was found to be proportional to the number of deposited ODA layers, which enables precise control of the TiO(2) film thickness. After heat treatment of the LB films at 300-600°C, the photocatalytic activities of the resulting TiO(2) films were determined from the decomposition of stearic acid cast films when irradiated with UV light for different time periods. Higher photocatalytic activity was observed in TiO(2) films heat treated at lower temperatures.
authors.affiliation: Department of Chemistry and Energy Engineering, Tokyo City University, Tokyo, Japan. mtakahas@tcu.ac.jp
authors.forename: Masashi
authors.initials: M
authors.lastname: Takahashi
authors.forename: Mitsuyuki
authors.initials: M
authors.lastname: Sendoh
authors.forename: Koichi
authors.initials: K
authors.lastname: Kobayashi
authors.forename: Kazuo
authors.initials: K
authors.lastname: Tajima
mesh_terms: D000588:Amines / Q000737:chemistry*; D002384:Catalysis; D015392:Chemistry, Inorganic / Q000379:methods; D006358:Hot Temperature; D008567:Membranes, Artificial; D018625:Microscopy, Atomic Force; D010777:Photochemistry / Q000379:methods*; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014466:Ultraviolet Rays
chemical_list: D000588:Amines; D008567:Membranes, Artificial; C009495:titanium dioxide; D014025:Titanium; C009317:stearylamine