Method for preparing nanometer titania

Abstract

The invention discloses a method for preparing nanometer titania. The method comprises the following steps: uniformly mixing tetrabutyl titanate and absolute ethyl alcohol according to a volume ratio of 1:(2.5-3.5), thereby obtaining a solution A; mixing and stirring glacial acetic acid, absolute ethyl alcohol and distilled water according to a volume ratio of 1:(3.5-4.5):(1.1-4), adding hydrochloric acid, regulating the pH value to be less than or equal to 3.5, and preparing a liquid B; adding the solution A and the liquid B into a water bath at the temperature of 25-35 DEG C according to a volume ratio of 1:1.1, pouring the solution A into the liquid B while stirring, continuously stirring the obtained mixed solution for at least half an hour, heating in a water bath at the temperature of 40-60 DEG C, thereby obtaining white gel after 2 hours; airing the gel in a fuming cupboard, adding the gel into a muffle furnace, preserving the temperature for 2-4 hours in an environment of 400-600 DEG C, thus obtaining a solid, grinding, thereby obtaining the powder, wherein the powder refers to the nanometer titania. The method has the advantages that the preparation conditions are wide, and the method is easily applied to industrial production.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a preparation method of nano titanium dioxide. Background technique [0002] Because super-thin materials often involve nano-titanium dioxide, but the current conditions for preparing nano-titanium dioxide are relatively harsh, making it difficult to produce nano-scale titanium dioxide powder in large quantities in industry. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing nanometer titanium dioxide with relatively relaxed conditions. [0004] The solution of the present invention is this: [0005] A preparation method of nano-titanium dioxide, comprising the steps of: [0006] (1) Preparation steps of liquid A: put n-butyl titanate and absolute ethanol at a volume ratio of 1:2.5-3.5, pour n-butyl titanate into absolute ethanol, and stir vigorously with a magnetic stirrer for 9- 15min, mix well, and prepa...

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Problems solved by technology

[0002] Because super-thin materials often involve nano-titanium dioxide, the conditions for preparing nano-titanium diox

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