Method for preparing porous titanium dioxide ball

A technology of porous titanium dioxide and titanium dioxide, which is applied in the directions of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., to achieve the effects of high yield, simple and mild preparation method, and low cost

Inactive Publication Date: 2019-04-16
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the preparation of porous spherical titanium dioxide

Method used

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  • Method for preparing porous titanium dioxide ball

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Experimental program
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Effect test

Embodiment 1

[0022] (1) Preparation of m-aminophenol formaldehyde resin balls: add 2.0 g of 25% ammonia water to a 30 degree solution containing 24 g of deionized water and 10 ml of absolute ethanol, add 0.71 g of m-aminophenol, stir to dissolve, and then Add 1.0 g of 35% formaldehyde solution, continue to stir for 24 hours, centrifuge, and dry the sample in an oven at 50 degrees for 12 hours.

[0023] (2) Preparation of titanium dioxide precursor solution: Disperse 1 ml of tetrabutyl titanate into deionized water, stir for 30 minutes, centrifuge and filter, wash with absolute ethanol three times, dry in an oven at 50 degrees for 2 hours, and take 1 gram of sample Use 0.1-2.0mol.L -1 Dissolve 15 ml of HCl to obtain a titanium tetrachloride solution with low acidity.

[0024] (3) Disperse 0.5 g of m-aminophenol formaldehyde resin ball into 20 ml of water, add 15 ml of 0.1 mol.L -1 Titanium tetrachloride solution (containing 1ml of tetrabutyl titanate), stir for 24 hours, take it out, put it in a...

Embodiment 2

[0027] (1) Preparation of m-aminophenol formaldehyde resin balls: add 2.0 g of 25% ammonia water to a 30 degree solution containing 24 g of deionized water and 10 ml of absolute ethanol, add 0.71 g of m-aminophenol, stir to dissolve, and then Add 1.0 g of 35% formaldehyde solution, continue to stir for 24 hours, centrifuge, and dry the sample in an oven at 50 degrees for 12 hours.

[0028] (2) Preparation of titanium dioxide precursor solution: Disperse 1 ml of tetrabutyl titanate in deionized water, stir for 30 minutes, centrifuge and filter, wash three times with absolute ethanol, dry in a 100 degree oven for 24 hours, and take 1 gram of sample Use 1.0mol.L -1 Dissolve 15 ml of HCl to obtain a titanium tetrachloride solution with low acidity.

[0029] (3) Disperse 1.0 g of m-aminophenol formaldehyde resin ball into 20 ml of water, add 15 ml of 0.5 mol.L -1 Titanium tetrachloride solution (containing 1ml of tetrabutyl titanate), stir for 24 hours, take it out, put it in an oven at...

Embodiment 3

[0031] (1) Preparation of m-aminophenol formaldehyde resin balls: add 2.0 g of 25% ammonia water to a 30 degree solution containing 24 g of deionized water and 10 ml of absolute ethanol, add 0.71 g of m-aminophenol, stir to dissolve, and then Add 1.0 g of 35% formaldehyde solution, continue stirring for 24 hours, and centrifuge. The sample was dried in an oven at 50 degrees for 12 hours.

[0032] (2) Preparation of titanium dioxide precursor solution: Disperse 1 ml of tetrabutyl titanate into deionized water, stir for 30 minutes, centrifuge and filter, wash with absolute ethanol three times, dry in an oven at 50 degrees for 2 hours, and take 1 gram of sample Use 0.1-2.0mol.L -1 Dissolve 15 ml of HCl to obtain a titanium tetrachloride solution with low acidity.

[0033] (3) Disperse 1.5 g of m-aminophenol formaldehyde resin balls into 20 ml of water, add 15 ml of 1.0 mol.L -1 Titanium tetrachloride solution (containing 1 ml of tetrabutyl titanate), stir for 24 hours, take it out, p...

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Abstract

The invention relates to a method for a preparing porous titanium dioxide ball. The method comprises the following steps that 1), a titanium dioxide precursor is added into dispersion liquid of an m-aminophenol formaldehyde resin ball, after the mixture is stirred for several hours, centrifugal separation is conducted, and a compound of the m-aminophenol formaldehyde resin ball and the titanium dioxide precursor is obtained; 2), the obtained compound of the m-aminophenol formaldehyde resin ball and the titanium dioxide precursor in the step one is placed in an oven for standing for some time,and thermal treatment is conducted; 3) after thermal treatment, the compound of the m-aminophenol formaldehyde resin ball and the titanium dioxide precursor is placed in a nitrogen atmosphere for hightemperature carbonization and further roasted to remove carbon, and the porous titanium dioxide ball is obtained; compared with the prior art, the preparation method is simple and mild, the size of titanium dioxide holes can be adjusted by adjusting the concentration of the titanium dioxide precursor, the cost is low, the period is shorter, and the yield is higher.

Description

[Technical Field] [0001] The invention belongs to the technical field of material preparation, in particular to a method for preparing porous titanium dioxide balls. [Background technique] [0002] Titanium dioxide is a low-cost, safe and stable semiconductor photocatalytic material. It has good photoelectric and dielectric properties. It is widely used in the fields of sensors, coatings, environmental purification, photoelectric catalysis, and catalyst carriers. [0003] There are many morphologies of titanium dioxide, and different morphologies affect the different physical and chemical properties of the sample. Among them, the spherical porous titanium dioxide material has low density, high specific surface area and good electron trapping ability, etc., which has attracted more attention. At present, the preparation method of hollow titanium dioxide spheres reported in patents and literature mainly adopts the template method, that is, the use of micro-nano organic or inorganic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G23/0536C01P2004/03C01P2004/32C01P2004/62
Inventor 沈绍典陈洁毛东森
Owner SHANGHAI INST OF TECH
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