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A kind of titanium dioxide and preparation method thereof

A technology of titanium dioxide and weight ratio, which is applied in the direction of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problems of decreased catalytic activity, loss of large specific surface area, and agglomeration of nanomaterials, and achieves a simple and large-scale preparation process. The specific surface area and the effect that the conditions are easy to control

Active Publication Date: 2022-06-17
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, random stacking often leads to the agglomeration of nanomaterials, which loses the original large specific surface area of ​​nanomaterials, and eventually leads to a sharp decline in the overall catalytic activity.

Method used

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  • A kind of titanium dioxide and preparation method thereof

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Effect test

Embodiment 1

[0034] A preparation method of titanium dioxide material, comprising the steps:

[0035] 1) dissolve 0.1 part (weight ratio) of zinc nitrate in 30 parts (weight ratio) of methanol, stir for 5 minutes to obtain solution 1;

[0036] 2) Dissolve 0.1 part (weight ratio) of 2-methylimidazole in 30 parts (weight ratio) of methanol, stir for 5 minutes to obtain solution 2;

[0037] 3) Mix and stir solution 1 and solution 2 for 1 minute, and leave standstill to react for 18 hours at a temperature of 3 degrees to obtain solution 3;

[0038] 4) adding 0.1 part (weight ratio) of titanium tetrachloride to solution 3, after stirring for 2 hours, adding 0.1 part (weight ratio) methanol solution to obtain solution 4, the methanol solution comprising 5 parts (weight ratio) water and 90 parts (weight ratio) methanol;

[0039] 5) After the solution 4 was stirred for 12 hours, centrifuged; the white product was washed three times with ethanol and deionized water to obtain a titanium dioxide ma...

Embodiment 2

[0043] A preparation method of titanium dioxide material, comprising the steps:

[0044] 1) dissolve 1 part (weight ratio) of zinc nitrate in 50 parts (weight ratio) of methanol, and stir for 15 minutes to obtain solution 1;

[0045] 2) 2 parts (weight ratio) of 2-methylimidazole are dissolved in 50 parts (weight ratio) of methanol, stirred for 15 minutes to obtain solution 2;

[0046] 3) Mix and stir solution 1 and solution 2 for 5 minutes, and leave standstill to react for 24 hours at a temperature of 5 degrees to obtain solution 3;

[0047] 4) adding 2 parts (weight ratio) of titanium tetrachloride to solution 3, after stirring for 4 hours, adding 5 parts (weight ratio) methanol solution to obtain solution 4, the methanol solution comprising 10 parts (weight ratio) water and 95 parts (weight ratio) methanol;

[0048] 5) After the solution 4 was stirred for 36 hours, centrifuged; the white product was washed three times with ethanol and deionized water to obtain a titanium...

Embodiment 3

[0050] A preparation method of titanium dioxide material, comprising the steps:

[0051] 1) dissolve 0.5 part (weight ratio) of zinc nitrate in 40 parts (weight ratio) of methanol, stir for 10 minutes to obtain solution 1;

[0052] 2) 1 part (weight ratio) of 2-methylimidazole was dissolved in 40 parts (weight ratio) of methanol, and stirred for 10 minutes to obtain solution 2;

[0053] 3) Mix and stir solution 1 and solution 2 for 3 minutes, and leave standstill to react for 21 hours at a temperature of 4 degrees to obtain solution 3;

[0054] 4) adding 1 part (weight ratio) of titanium tetrachloride to solution 3, after stirring for 3 hours, adding 3 parts (weight ratio) methanol solution to obtain solution 4, the methanol solution comprising 7 parts (weight ratio) water and 93 parts (weight ratio) methanol;

[0055] 5) After the solution 4 was stirred for 24 hours, centrifuged; the white product was washed three times with ethanol and deionized water to obtain a titanium ...

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Abstract

The invention discloses a titanium dioxide and a preparation method thereof. The material has a three-dimensional hollow branched structure; the preparation method comprises the following steps: 1) dissolving 0.1-1 part (weight ratio) of zinc nitrate in 30-50 parts ( In the methanol of weight ratio), solution 1 is obtained; 2) 0.1-2 parts (weight ratio) of 2-methylimidazole are dissolved in 30-50 parts (weight ratio) of methanol, solution 2 is obtained; 3) solution is 1 and solution 2 are mixed and stirred, and left to obtain solution 3; 4) 0.1-2 parts (weight ratio) of titanium tetrachloride is added to solution 3, and after stirring, 0.1-5 parts (weight ratio) of methanol solution is added to obtain a solution 4; 5) Centrifuge the substances generated after the solution 4 is stirred. The present invention realizes depositing titanium dioxide particles on the zinc oxide branched template by adjusting the different speed ratios of the loading reaction and the etching reaction, and at the same time utilizing the continuously produced hydrochloric acid by-products to slowly etch the zinc oxide branched template to obtain three-dimensional hollow branched titanium dioxide Material.

Description

technical field [0001] The invention relates to a three-dimensional hollow branched titanium dioxide material and a preparation method thereof. Background technique [0002] Titanium dioxide is a common semiconductor photocatalytic material. Under the irradiation of light, it can convert light energy into chemical energy, and can successfully decompose most organic matter including refractory organic matter in a short time. In addition, it also has the characteristics of high stability, light corrosion resistance, non-toxicity, and no secondary pollution during the treatment process. attention of many people. [0003] On the other hand, as a food and drug additive, titanium dioxide with micron scale and above has been recognized as a safe substance after long-term research and use, and has been certified by the US FDA, and its safety is generally accepted by the scientific community and the general public. However, there are few studies on the safety of titanium dioxide b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/053
CPCC01G23/0536C01P2004/30C01P2004/03
Inventor 王晟王騊纪律律
Owner ZHEJIANG SCI-TECH UNIV
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