CN-121991531-A - Preparation method and application of anatase conductive titanium dioxide

Abstract

The invention provides a preparation method and application of anatase type conductive titanium dioxide, and relates to the technical field of titanium dioxide production, wherein the preparation method comprises the following steps of S1 adding deionized water into anatase type titanium dioxide base material, stirring to form a white suspension, adding a dispersing agent and a precipitating agent into the white suspension, carrying out ultrasonic treatment to obtain a titanium dioxide suspension, S2 dripping ethanol solution of tin chloride and antimony chloride into the titanium dioxide suspension to form an adsorption layer on the surface of titanium dioxide, then adjusting pH to 1.5-2.5, transferring the adsorption layer into a reaction kettle, reacting for 4 hours at 180 ℃, and carrying out suction filtration and drying after the reaction is finished.

Inventors

• HAN XIAOYAN
• YANG CHEN

Assignees

• 淮安市鸿洋钛业有限公司

Dates

Publication Date

20260508

Application Date

20251218

Claims (10)

1. 1. The preparation method of the anatase conductive titanium dioxide is characterized by comprising the following steps of: S1, adding deionized water into anatase type titanium dioxide base material, and stirring to form a white suspension; S2, dropwise adding an ethanol solution of tin chloride and antimony chloride into the titanium dioxide suspension, forming an adsorption layer on the surface of titanium dioxide, adjusting the pH value to be 1.5-2.5, transferring the mixture into a reaction kettle, reacting for 4 hours at 180 ℃, and obtaining the anatase type conductive titanium dioxide through suction filtration and drying after the reaction is finished.
2. 2. The preparation method of claim 1, wherein in the step S1, the dispersing agent is polyvinylpyrrolidone, the precipitating agent is urea, and the mass ratio of the dispersing agent to the precipitating agent is 1-5.
3. 3. The preparation method according to claim 1, wherein the mass ratio of the tin chloride to the titanium dioxide in the step S2 is 1-5.
4. 4. The method according to claim 1, wherein the molar ratio of the antimony chloride to the tin chloride in the step S2 is 1 to 10.
5. 5. The method according to claim 4, wherein the method for preparing the ethanol solution of tin chloride and antimony chloride in step S2 is characterized in that antimony chloride trihydrate is slowly added into ethanol, stirred until the antimony chloride trichloride is completely dissolved, then tin chloride pentahydrate is added, and stirring is continued to obtain the ethanol solution of tin chloride and antimony chloride.
6. 6. The method according to claim 1, wherein the pH adjusting solution in step S2 is a tartaric acid solution or an aqueous ammonia solution.
7. 7. The method according to claim 1, wherein the power of the ultrasound in step S1 is 100-200 w, and the time of the ultrasound is 20-40 minutes.
8. 8. The preparation method of claim 1, wherein in the step S1, the mass-volume ratio of the anatase titanium dioxide base material to the deionized water is 1-2, and the stirring rotation speed is 400-600 rpm.
9. 9. The preparation method of the porous ceramic material according to claim 1, wherein the suction filtration degree in the step S2 is free of chloride ion residues, the drying temperature is 90+/-5 ℃, the vacuum degree is-0.09 MPa, and the time is 12-16 hours.
10. 10. Use of the preparation method of claim 1 to obtain anatase conductive titanium dioxide in chemical fiber products.

Description

Preparation method and application of anatase conductive titanium dioxide Technical Field The invention relates to the technical field of titanium dioxide production, in particular to a preparation method and application of anatase conductive titanium dioxide. Background Titanium dioxide (titanium dioxide) is taken as an inorganic functional material with excellent performance, is honored as industrial monosodium glutamate by virtue of the outstanding characteristics of no toxicity and harm, strong hiding power, excellent tinting strength, stable physicochemical properties and the like, and is indispensable in various core fields of national economy such as paint, plastics, papermaking, chemical fiber and the like, and has extremely wide application fields. However, in the practical application process of titanium dioxide, the surface of the material is easy to transfer and accumulate charges under the influence of external forces such as friction, impact and tearing, so that static electricity is formed, and the static electricity needs to be eliminated. At present, the crystal form of the conductive titanium dioxide is mostly rutile type, but in the chemical fiber spinning process, the rutile type conductive titanium dioxide has higher hardness, and can cause serious abrasion to a spinning nozzle, thereby influencing spinning precision and equipment service life. While the anatase titanium dioxide needs a high-temperature calcination procedure during modification treatment to promote crystallization and combination of conductive active components, the anatase titanium dioxide has poor crystal structure stability, is easy to change crystal form under high temperature conditions, and is irreversibly converted into rutile form, so that the low-hardness characteristics required by chemical fiber industry cannot be maintained. Furthermore, carbon-based materials are mostly adopted in the conductive titanium dioxide in the chemical fiber field, static dissipation is achieved through the high conductivity of the carbon-based materials, the carbon-based materials are dark black, the color of the compounded conductive titanium dioxide is deepened, and the appearance color of the product is affected. At present, the conductive titanium dioxide which can simultaneously meet the three core requirements of an anatase type crystal form (low hardness requirement of adaptive chemical fiber spinning), excellent conductivity (static electricity elimination trouble) and light color appearance (guarantee of chemical fiber product color) is a current problem to be solved. Disclosure of Invention The preparation method comprises the steps of S1, adding deionized water into anatase titanium dioxide base materials, stirring to form a white suspension, adding a dispersing agent and a precipitating agent into the white suspension, carrying out ultrasonic treatment to obtain a titanium dioxide suspension, S2, dropwise adding an ethanol solution of tin chloride and antimony chloride into the titanium dioxide suspension to form an adsorption layer on the surface of titanium dioxide, then adjusting pH to 1.5-2.5, transferring to a reaction kettle, reacting for 4 hours at 180 ℃, and carrying out suction filtration and drying after the reaction is finished. The invention aims at realizing the following technical scheme: In a first aspect, the invention provides a method for preparing anatase conductive titanium dioxide, which comprises the following steps: S1, adding deionized water into anatase type titanium dioxide base material, and stirring to form a white suspension; S2, dropwise adding an ethanol solution of tin chloride and antimony chloride into the titanium dioxide suspension, forming an adsorption layer on the surface of titanium dioxide, adjusting the pH value to be 1.5-2.5, transferring the mixture into a reaction kettle, reacting for 4 hours at 180 ℃, and obtaining the anatase type conductive titanium dioxide through suction filtration and drying after the reaction is finished. In some embodiments of the present invention, in step S1, the dispersant is polyvinylpyrrolidone, the precipitant is urea, and the mass ratio of the dispersant to the precipitant is 1-5. In some embodiments of the present invention, the mass ratio of the tin chloride to the titanium dioxide in the step S2 is 1 to 5. In some embodiments of the present invention, the molar ratio of the antimony chloride to the tin chloride in the step S2 is 1-10. In some embodiments of the present invention, the preparation method of the ethanol solution of tin chloride and antimony chloride in step S2 includes slowly adding antimony chloride trihydrate into ethanol, stirring until the antimony chloride trihydrate is completely dissolved, adding tin chloride pentahydrate, and continuously stirring to obtain the ethanol solution of tin chloride and antimony chloride. In some embodiments of the present invention, the pH adjusting solution in step S2 is a tartaric acid so