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Method for preparing anatase-like titanium dioxide nanometer powder

A titanium dioxide and anatase type technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., to achieve the effects of less environmental pollution, short production cycle, and easy control of the reaction process

Inactive Publication Date: 2007-05-16
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nano-scale anatase nano-titanium dioxide powder can be obtained without high-temperature calcination

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]First, prepare tetrabutyl titanate (C.R.) ethanol deionized aqueous solution with a molar concentration of 0.1mol / L to form a uniform titanium-containing solution, wherein the molar ratio of ethanol to deionized water is 1:1; then polyacrylamide ( C.R.), polyvinyl alcohol (C.R.) and polyethylene glycol (C.R.) were dissolved in deionized water at a molar ratio of 1:1:1 to make a mixed dispersion with a concentration of 0.001mol / L; then the mixed dispersion Add it into a uniform titanium-containing solution, stir vigorously to form a uniform dispersed titanium-containing solution; then weigh ammonia water (C.R.) and sodium hydroxide (A.R.) in a molar ratio of 1:1 and dissolve them together in the mixed dispersion, and stir to obtain a molar concentration of 0.5mol / L evenly dispersed lye; then the uniformly dispersed lye is added dropwise to the dispersed titanium-containing solution, wherein the mol ratio of the dispersed lye and the dispersed titanium-containing solution t...

Embodiment 2

[0037] First, prepare an ethanol deionized aqueous solution of tetrabutyl titanate (C.R.) at a molar concentration of 10mol / L to form a uniform titanium-containing solution, wherein the molar ratio of ethanol to deionized water is 1:6; polyacrylamide (C.R.) , polyvinyl alcohol (C.R.) and polyethylene glycol (C.R.) are dissolved in deionized water at a molar ratio of 1:10:1 to make a mixed dispersion with a concentration of 1mol / L; In the titanium-containing solution, stir vigorously to form a uniformly dispersed titanium-containing solution; weigh ammonia water (C.R.) and sodium hydroxide (A.R.) at a molar ratio of 3:1 and dissolve them together in the mixed dispersion, and stir to obtain a concentration of 10mol / L Uniformly disperse the lye; then add the uniformly dispersed lye dropwise to the dispersed titanium-containing solution, wherein the molar ratio of the dispersed lye to the dispersed titanium-containing solution is 6:1, and at the same time add dilute nitric acid (A....

Embodiment 3

[0039] Firstly, an ethanol deionized aqueous solution of tetrabutyl titanate (C.R.) was prepared at a molar concentration of 5 mol / L to form a uniform titanium-containing solution, wherein the molar ratio of ethanol to deionized water was 1:3; then polyacrylamide (C.R. ), polyvinyl alcohol (C.R.) and polyethylene glycol (C.R.) were dissolved in deionized water at a molar ratio of 1:1:1 to make a mixed dispersion with a concentration of 0.1mol / L; then the mixed dispersion was added to In the uniform titanium-containing solution, vigorously stir to form a uniform dispersed titanium-containing solution; then weigh ammonia water (C.R.) and sodium hydroxide (A.R.) in a molar ratio of 2:1 and dissolve them together in the mixed dispersion, and stir to obtain a molar concentration of 5mol / L uniformly dispersed lye; then add the uniformly dispersed lye dropwise to the dispersed titanium-containing solution, the molar ratio of the dispersed lye to the dispersed titanium-containing solu...

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Abstract

The invention discloses a preparing method of anatase type titanium dioxide nanometer powder, which comprises the following steps: dripping titanic acid tetrabutyrate resin in the deionized water solution of alcohol to form even titanium solution; adding 0.1-1mol / L composite dispersing liquid of amide polyacrylate, polyvinyl alcohol and carbowax in the titanium solution evenly; adding ammonia or sodium hydroxide in the even solution with titanium to do ultrasonic reaction; disposing reacted product through heat to obtain even grain size anatase type titanium dioxide nanometer powder.

Description

technical field [0001] The invention relates to a preparation method of anatase titanium dioxide nanometer powder. technical background [0002] Titanium dioxide (TiO 2 ) is a multifunctional oxide material with non-toxicity, low price, good chemical stability, high refractive index, good corrosion resistance and weather resistance, which is widely used in advanced coatings, cosmetics, sensors, bioengineering, polymer materials, Catalytic materials and secondary batteries and other fields. Generally, titanium dioxide has three crystal structures of rutile, anatase and brookite, among which rutile and anatase are both tetragonal crystal systems, but with different space groups, rutile The space group of the type is D 4h 14 =P4 2 / mmm, the space group of anatase is C 4h 19 =C 4 / mmm, the brookite type is orthorhombic. All three crystal structures are represented by [TiO 6 ] octahedra sharing edges, but different crystal structures in [TiO 6 ] The number of shared ed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/047C01G23/053
Inventor 谭强强齐智平童建忠
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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