Preparation method of nanometer titanium dioxide film

Abstract

The invention relates to a preparation method of a nanometer titanium dioxide film. The method is convenient to use. The method comprises the following steps: placing a cleaned glass ware and a quartz glass substrate in a constant temperature vacuum drying box to be dried, uniformly mixing analytically pure absolute ethyl alcohol and acetylacetone in a reaction kettle, and then, adding tetraethyl titanate to obtain a uniform and transparent solution, stirring the solution at room temperature, continuing to drip a small dosage of mixed solution of deionized water and the absolute ethyl alcohol after the solution is uniformly mixed, stirring through a magnetic force to obtain stable, uniform, clear and transparent yellow gel, standing, pulling the gel into a film on the clean quartz glass substrate through a pulling machine, pre-heating the film in a muffle furnace, calcining and annealing the film at a preset temperature to obtain the nanometer titanium dioxide film, and cooling the nanometer titanium dioxide film to the room temperature in an air cooling manner. The preparation method provided by the invention has the advantages of controlling the hydrolysis speed by controlling the dosage of the dripped deionized water and the absolute ethyl alcohol, thereby being convenient and practical; and an anatase type nanometer titanium dioxide film with excellent quality is 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 p...

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.

Images