Preparation method of red schorl type titanium oxide nano powder

Abstract

The invention discloses a preparation method of rutile titanium dioxide nanometer powder. The steps are (a) first add titanium tetrachloride to the stirring water at 0-10°C to obtain a titanium tetrachloride solution with a molar concentration of 0.1-0.5M, and then stir it at 40-100°C for 1.5 ~2.5 hours to get titanium tetrachloride glue, after that, first age the glue for at least 1 day and then filter to get titanium tetrachloride glue with a pH value of 1 to 3, then ultrasonically disperse it, and add a stabilizer to get titanium dioxide (b) first dilute the titanium dioxide sol and water in a volume ratio of 1: 1 to 5, and configure a titanium tetrachloride aqueous solution in a mass ratio of 1: 3 to 15 by titanium tetrachloride: water, and then mix the two The mixed solution is obtained by mixing them according to the volume ratio of 1:4~10; (c) first stirring the mixed solution at 60~100°C for 2~3 hours, then filtering, precipitating and drying it to obtain the rutile type Titanium dioxide nanopowder. It has a high yield and is suitable for industrialized large-scale production.

Description

Technical field [0001] The invention relates to a method for preparing titanium dioxide powder, in particular to a method for preparing rutile titanium dioxide nano powder. Background technique [0002] Titanium dioxide is one of the important metal oxides and can be widely used in plastics, papermaking, printing ink, chemical fiber, rubber and cosmetics industries. With the rise of nano materials and the development of preparation technology, the abnormal properties of nano titanium dioxide different from conventional powder materials have greatly expanded the application fields of titanium dioxide. For example, it can be used as a catalyst carrier to degrade organic pollutants under ultraviolet radiation. Converting solar energy into electricity, gas sensors, pressure-sensitive components, polymers, composite functional ceramic materials, structural enhancement additives, nonlinear optical materials, etc. At present, people have made some attempts and efforts in order to obtain...

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Problems solved by technology

However, this preparation method has unsatisfactory parts. First, the particle shape of the obtained titanium dioxide nanopowder is irregular; secondly, there are many procedures, which lead to complicated production process and increase the cost of preparation; thirdly, the whole reaction process Middle Ti 4+ The concentration of the powder is very low, so that the yield of the powder is also very low, and it can only be realized in the laboratory, and there is still a certain distance from industrial production

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