Method for preparing anatase-like titanium dioxide nanometer powder

A titanium dioxide, 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: 2009-10-07
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, a molar concentration of 0.1 mol / L of tetrabutyl titanate (CR) ethanol deionized water solution was prepared to form a uniform titanium-containing solution, wherein the molar ratio of ethanol to deionized water was 1:1; then the polyacrylamide ( CR), polyvinyl alcohol (CR) and polyethylene glycol (CR) are dissolved in deionized water at a molar ratio of 1:1:1 to form a mixed dispersion with a concentration of 0.001 mol / L; then the mixed dispersion Add to the uniform titanium-containing solution, stir vigorously to form a uniformly dispersed titanium-containing solution; then weigh the ammonia (CR) and sodium hydroxide (AR) at a molar ratio of 1:1 to dissolve in the mixed dispersion, and stir to obtain a molar concentration of 0.5mol / L uniformly dispersed lye; then the uniformly dispersed lye is added dropwise to the dispersed titanium-containing solution, wherein the molar ratio of alkali to titanium in the dispersed lye and the dispersed titanium-containing solution ...

Embodiment 2

[0037] Firstly, a molar concentration of 10 mol / L of tetrabutyl titanate (CR) ethanol deionized water solution was prepared to form a uniform titanium-containing solution, in which the molar ratio of ethanol to deionized water was 1:6; the polyacrylamide (CR) , Polyvinyl alcohol (CR) and polyethylene glycol (CR) are dissolved in deionized water at a molar ratio of 1:10:1 to prepare a mixed dispersion with a concentration of 1mol / L; add the above mixed dispersion to the above homogeneous In the titanium-containing solution, stir vigorously to form a uniformly dispersed titanium-containing solution; weigh ammonia (CR) and sodium hydroxide (AR) at a molar ratio of 3:1 to dissolve in the mixed dispersion, and stir to obtain a concentration of 10mol / L Disperse the lye evenly; then add the evenly dispersed lye dropwise to the dispersed titanium-containing solution, where the molar ratio of alkali to titanium in the dispersed lye and the dispersed titanium-containing solution is 6:1, and...

Embodiment 3

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

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Abstract

A preparation method of anatase titanium dioxide nanometer powder. In this method, tetrabutyl titanate is first dropped into ethanol deionized aqueous solution to form a uniform titanium-containing solution; then a mixture of polyacrylic acid amine, polyvinyl alcohol and polyethylene glycol with a concentration of The dispersion liquid is added to form a uniform dispersed titanium-containing solution; then ammonia water or sodium hydroxide is added to the dispersed titanium-containing uniform solution for ultrasonic reaction; then the reaction product is heat-treated to obtain anatase titanium dioxide nanopowder with uniform particle size. The anatase titanium dioxide nanometer powder obtained by the invention has uniform particle size, has wide application prospects in the fields of photocatalysis, photoelectric conversion, sensitive materials and self-cleaning materials, and has simple preparation process, easy operation and industrial production.

Description

Technical field [0001] The invention relates to a preparation method of anatase type titanium dioxide nano powder. technical background [0002] Titanium Dioxide (TiO 2 ) Is a kind of non-toxic, low price, good chemical stability, high refractive index, corrosion resistance and good weather resistance. It 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: Rutile, Anatase and Brookite. The rutile and anatase are both tetragonal crystal systems, but the space group is different. Rutile The space group of type is D 4h 14 =P4 2 / mmm, the anatase type space group is C 4h 19 =C 4 / mmm, the brookite type is orthorhombic crystal system. These three crystal structures are all based on [TiO 6 ]Octahedrons are common edge, but in different crystal structures [TiO 6 ] The number of common ribs of octahedrons is different. The numbe...

Claims

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Application Information

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Patent Type & Authority Patents(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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