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Preparation method of micron-sized titanium dioxide hollow blade

A technology of titanium dioxide and polypropylene glycol, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of loss of large specific surface area, agglomeration of nano-materials, decrease in catalytic activity, etc. Effect

Active Publication Date: 2021-06-22
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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  • Preparation method of micron-sized titanium dioxide hollow blade
  • Preparation method of micron-sized titanium dioxide hollow blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of titanium dioxide, comprising the steps of:

[0028] 1) 0.1 part (weight ratio) of p-methylphenethylamine, 0.5 part (weight ratio) of polyethylene-polypropylene glycol and 10 ml of water were mixed and stirred for 3 hours to obtain solution 1;

[0029] 2) 1 part (weight ratio) of zinc nitrate hexahydrate, 0.5 part (weight ratio) of hexamethylenetetramine, 0.3 part (weight ratio) of hexahydrate nitrate hydrate, 1 part (weight ratio) of 2- The solution obtained by adding 10ml of water to methylimidazole was mixed with the above-mentioned solution 1, ultrasonicated for 10 minutes, and then placed in an incubator at 25 degrees Celsius for 18 hours to obtain solution 2;

[0030] 3) While stirring solution 2, add 0.2 parts (by weight) of butyl orthotitanate, and stir for 5 minutes to obtain solution 3;

[0031] 4) Place the solution 3 in an autoclave, and treat it for 12 hours under the hydrothermal condition of 150 degrees;

[0032] 5) After centrifu...

Embodiment 2

[0037] A preparation method of titanium dioxide, comprising the steps of:

[0038] 1) 10 parts (weight ratio) of p-methylphenethylamine, 5 parts (weight ratio) of polyethylene-polypropylene glycol and 50 ml of water were mixed and stirred for 5 hours to obtain solution 1;

[0039] 2) Add 5 parts (weight ratio) of zinc nitrate hexahydrate, 7 parts (weight ratio) of hexamethylenetetramine, 3 parts (weight ratio) of cobalt nitrate hexahydrate, and 10 parts (weight ratio) of 2-methylimidazole The solution obtained after 50ml of water was mixed with the above-mentioned solution 1, ultrasonicated for 30 minutes, and then placed in an incubator at 25 degrees Celsius for 24 hours to obtain solution 2;

[0040] 3) While stirring solution 2, add 0.7 parts (by weight) of butyl orthotitanate, and stir for 30 minutes to obtain solution 3;

[0041] 4) Place solution 3 in an autoclave, and treat it for 48 hours under hydrothermal conditions of 180 degrees;

[0042] 5) After centrifugation,...

Embodiment 3

[0044] A preparation method of titanium dioxide, comprising the steps of:

[0045] 1) 5 parts (weight ratio) of p-methylphenethylamine, 3 parts (weight ratio) of polyethylene-polypropylene glycol and 30ml of water were mixed and stirred for 4 hours to obtain solution 1;

[0046] 2) Add 3 parts (by weight) of zinc nitrate hexahydrate, 4 parts (by weight) of hexamethylenetetramine, 2 parts of cobalt nitrate hexahydrate, and 5 parts of 2-methylimidazole into 30ml of water to obtain The solution was mixed with the above solution 1, ultrasonicated for 20 minutes, and then placed in a constant temperature box at 25 degrees Celsius for 21 hours to obtain solution 2;

[0047] 3) While stirring solution 2, add 0.4 parts (by weight) of butyl orthotitanate, and stir for 20 minutes to obtain solution 3;

[0048] 4) Place the solution 3 in an autoclave, and treat it for 12-48 hours under the hydrothermal condition of 165 degrees;

[0049] 5) After centrifugation, the resultant was washed...

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Abstract

The invention discloses a preparation method of titanium dioxide. The preparation method comprises the following steps: 1) mixing and stirring 0.1-10 parts by weight of p-methyl phenylethylamine, 0.5-5 parts by weight of polyethylene-polypropylene glycol and 10-50 ml of water to obtain a solution 1; 2) adding 10-50ml of water into 1-5 parts by weight of zinc nitrate hexahydrate, 0.5-7 parts by weight of hexamethylenetetramine, 0.3-3 parts by weight of cobalt nitrate hexahydrate and 1-10 parts by weight of 2-methylimidazole to obtain a solution, mixing the solution with the solution 1, and standing at normal temperature to obtain a solution 2; 3) stirring the solution 2, adding 0.2-0.7 part (weight ratio) of n-butyl titanate, and stirring to obtain a solution 3; 4) carrying out hydrothermal treatment on the solution 3; and 5) performing centrifugal separation on the mixture in the step 4) to obtain titanium dioxide. According to the titanium dioxide structure disclosed by the invention, a safer micron-sized structure size is achieved, and the active surface of a catalytic reaction is widened through a hollow structure.

Description

technical field [0001] The invention relates to a method for preparing a micron-level titanium dioxide hollow blade. 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 substances including refractory organic substances in a short period of time. In addition, it also has the characteristics of high stability, light corrosion resistance, non-toxicity, etc., and does not produce secondary pollution during the treatment process, so it is more and more used in the fields of antibacterial, deodorization, oil pollution decomposition, anti-mildew and anti-algae, air purification and other fields. The attention of many people. [0003] On the other hand, as a food and drug additive, micron-scale and above-scale titanium dioxide has been recognized as a safe substance after long-term research and use, and has bee...

Claims

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Application Information

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IPC IPC(8): C01G23/053
CPCC01G23/053C01P2004/30C01P2004/61
Inventor 王晟韦渝洁王騊
Owner ZHEJIANG SCI-TECH UNIV