TiO₂ Thin Films Prepared By Liquid Phase Deposition On The Optical Fiber And The Structure Study Of Thin Film

With the widely using of semiconductor photocatalysis in environment protecting, nanometer TiO₂ was detailed studied due to its excellent photocatalytic property. To meet the initial study of high efficiency photoreactor, we dedicate to the synthesis of TiO₂ film with optical fiber by Liquid Phase Deposition and wish to obtain well-combined, stable films which can deal with both organic and some inorganic contaminations.Crystalline TiO₂ thin films were coated on silica glass fibers by liquid phase deposition from aqueous solution of ammonium hexafluorotitanate at low temperature. TiO₂ thin films and nano-powders were prepared by adding H3BO3 into an (NH4)2TiF6 solution supersaturated with anatase nano-crystalline TiO₂ at 40℃. This paper study the influences of the anatase nano-crystalline TiO₂ to the TiO₂ deposition. The adding of anatase nano-crystalline TiO₂ to the deposition solution accelerates the depositing of TiO₂ articles from the deposition solution on the silica glass fiber. A well-combined and durable TiO₂ thin film on silica glass fibers surface obtained by controlling the deposition temperature, deposition time, deposition cycles, concentration of the deposition solution, relative concentration of the deposition materials, pH value of the deposition solution. The effect of the deposition conditions, the drying conditions and the annealing treatment conditions on the surface morphology, section morphology, growth patterns, thickness of the deposited TiO₂ thin films were investigated. Growth rate and particle size of the thin films were controlled by the deposition conditions. As a result, a well-combined and durable TiO₂ thin films on silica glass fibers surface obtained under definite optimizing experimental conditions and parameters.