Preparation method for polymerizing titanium dioxide by graphene oxide in situ

A technology of titanium dioxide and in-situ oxidation, applied in the directions of titanium dioxide, catalyst activation/preparation, chemical instruments and methods, etc., can solve the problems of difficult dispersion and poor effect, and achieve the effect of saving cost, reducing self-agglomeration and less dosage

Inactive Publication Date: 2017-05-24
重庆中鼎三正科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to add graphene to titanium dioxide gel and mix, which is not easy to disperse, and the effect of mixing with titanium dioxide gel is relative

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The invention discloses a method for preparing in-situ graphene oxide polymerized titanium dioxide. Pour 5 g of metatitanic acid into 100 g of graphene oxide suspension, slowly add 40 g of 30% hydrogen peroxide solution dropwise, stir, and dropwise add ammonia water to adjust the pH value to 9. , stirred for 5 hours to obtain titanium peroxide and graphene oxide sol;

[0020] The obtained titanium peroxide and graphene oxide sol were incubated at 100° C. for 4 hours;

[0021] Ammonia water is added dropwise to the heated titanium peroxide and graphene oxide sol to precipitate graphene oxide polymerized titanium dioxide from the solution, and then filter and dry to obtain graphene oxide polydoped titanium dioxide.

Embodiment 2

[0023] A preparation method of in-situ graphene oxide polymerized titanium dioxide of the present invention, 7g of metatitanic acid is poured into 100g of graphene oxide suspension, 60g of 30% hydrogen peroxide solution is slowly added dropwise, stirred, and ammonia water is added dropwise to adjust the pH value to 8.5 , stirred for 7 hours to obtain titanium peroxide and graphene oxide sol;

[0024] The obtained titanium peroxide and graphene oxide sol were incubated at 80° C. for 8 hours;

[0025] Ammonia water is added dropwise to the heated titanium peroxide and graphene oxide sol to precipitate graphene oxide polymerized titanium dioxide from the solution, and then filter and dry to obtain graphene oxide polydoped titanium dioxide.

Embodiment 3

[0027] A method for preparing in-situ graphene oxide polymerized titanium dioxide according to the present invention. Pour 7g of metatitanic acid into 105g of graphene oxide suspension, slowly add 60g of 30% hydrogen peroxide solution dropwise, stir, and dropwise add ammonia water to adjust the pH value to 9. , stirred for 10 hours to obtain titanium peroxide and graphene oxide sol;

[0028] The obtained titanium peroxide and graphene oxide sol were incubated at 120° C. for 15 hours;

[0029] Ammonia water is added dropwise to the heated titanium peroxide and graphene oxide sol to precipitate graphene oxide polymerized titanium dioxide from the solution, and then filter and dry to obtain graphene oxide polydoped titanium dioxide.

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PUM

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Abstract

The invention discloses a preparation method for polymerizing titanium dioxide by graphene oxide in situ. The method comprises the following steps: preparing graphene oxide suspension liquid; pouring metatitanic acid into the graphene oxide suspension liquid, adding a hydrogen peroxide solution at the concentration of 30 percent slowly and dropwise, stirring, adding ammonia water dropwise to adjust the ph value to be 8.5 to 10, and stirring for 3 to 10 hours to obtain titanium peroxide and graphene oxide sol, wherein the mass ratio of the metatitanic acid to the hydrogen peroxide solution to the graphene oxide suspension liquid is (5-7):(40-60):(100-105); performing heat preservation on the obtained titanium peroxide and graphene oxide sol at 80 to 120 DEG C for 4 to 24 hours; adding the ammonia water into the heated titanium peroxide and graphene oxide sol dropwise to enable the graphene oxide to polymerize the titanium dioxide to separate out of the solution, and filtering and drying to obtain the graphene oxide polymerized doped titanium dioxide. The hydroxyl and the carboxyl on the surface of the graphene oxide and the hydroxyl of the titanium peroxide can perform hydroxyl shrinking reaction or dehydration reaction under the hydrothermal action, so the in-situ polymerization of the titanium dioxide on the surface of the graphene oxide is realized.

Description

technical field [0001] The invention relates to a preparation method, in particular to a preparation method of in-situ graphene oxide polymerized titanium dioxide. Background technique [0002] Graphene has a wide range of applications. According to graphene's ultra-high strength and ultra-thin characteristics, graphene can be widely used in various fields, such as ultra-thin and ultra-light aircraft materials, ultra-light body armor, etc. According to its excellent conductivity, it also has great application potential in the field of microelectronics. Graphene may become a substitute for silicon, making ultra-miniature transistors, used to produce future supercomputers, and the higher electron mobility of carbon can enable future computers to achieve higher speeds. In addition, graphene materials are also excellent modifiers. In new energy fields such as lithium-ion batteries and super capacitors, they can be used as electrode material additives due to their high conducti...

Claims

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Application Information

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IPC IPC(8): C01G23/053C01B32/198B01J21/18
CPCC01G23/053B01J21/18B01J37/10C01P2004/80
Inventor 刘通任岳方颜颖曹鹏军刘扬杨盛华
Owner 重庆中鼎三正科技有限公司
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