A kind of preparation method of nanometer titanium dioxide film

Abstract

The patent of the present invention is a preparation method of nano titanium dioxide film. Its method is convenient to use. Put the cleaned glassware and quartz glass substrate into a constant temperature vacuum drying oven for drying, put analytically pure anhydrous ethanol and acetylacetone in a reaction kettle and mix evenly, then add ethyl orthotitanate to obtain a uniform and transparent Stir the solution at room temperature. After mixing evenly, continue to drop a small amount of mixed solution of deionized water and absolute ethanol, and stir magnetically to obtain a stable, uniform, clear and transparent yellow gel. After standing still, use The pulling machine pulls and forms a film on a clean quartz glass sheet, then preheats it in a muffle furnace, and then calcines and anneals at a preset temperature to obtain a nano-titanium dioxide film, which is cooled to room temperature by air cooling. The invention has the advantages that the hydrolysis rate is controlled by the amount of deionized water and absolute ethanol added dropwise, which is convenient and practical; an anatase nano-titanium dioxide thin film with excellent quality can be obtained.

Description

technical field [0001] The invention relates to a method for preparing a nano-titanium dioxide thin film, which belongs to the field of nano-material preparation and processing research. The invention is prepared by a sol-gel method, coated by a pulling method, and then calcined to obtain a nano-titanium dioxide film. Background technique [0002] Nano-TiO 2 It has many unique properties, such as excellent optical properties, magnetic properties, chemical corrosion resistance and chemical activity, excellent plasticity, high hardness and strength and other physical, chemical and mechanical properties, so it has been widely used, especially It is widely used in electronic materials, sensitizers, catalysts, cosmetics, functional ceramics and other fields. [0003] Nano-TiO 2 The film is ultra-hydrophilic and ultra-permanent when exposed to light, thus providing anti-fog functionality. Nano-TiO 2 The film has photocatalytic properties, and can be used for sewage purificati...

AI Technical Summary

Problems solved by technology

However, the magnetron sputtering method is expensive due to the need for vacuum equipment and an additional magnetic field.

It is difficult to form films on non-standard substrates by chemical vapor deposition

The traditional sol-gel method has the advantages of simple method, and the deposition area is not limited by the shape, but the film quality is difficult to control and the bonding force with the substrate is poor.

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