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Preparation method for graphene/nanometer titanium dioxide composite photocatalyst

A nano-titanium dioxide, photocatalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, special compound water treatment and other directions, can solve problems such as waste of raw materials, difficult operation, etc., and achieves low cost, simple preparation method, and use. simple method effect

Inactive Publication Date: 2017-11-03
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, in the preparation method stated in the patent CN105551828A, there is a waste of raw materials and the shortcomings of not simple operation, which inhibit its industrial application

Method used

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  • Preparation method for graphene/nanometer titanium dioxide composite photocatalyst
  • Preparation method for graphene/nanometer titanium dioxide composite photocatalyst
  • Preparation method for graphene/nanometer titanium dioxide composite photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of preparation method of graphene-nanometer titanium dioxide composite photocatalyst, concrete steps are as follows:

[0025] Synthetic graphene oxide:

[0026] Add 18ml of concentrated sulfuric acid with a mass concentration of 98% to a mixed solution of 500mg graphite powder and 2.0g sodium nitrate, stir at a temperature lower than 5°C, and let it react in a beaker for 1.0h; grind potassium permanganate into powder, then within 0.5h, add 3.0g powder to the beaker, and react at a temperature lower than 5°C for 1.5h; put the beaker in a constant temperature box to raise the temperature to 35°C, and then keep the temperature for 1.0h, after the constant temperature is over, pour it into the beaker Add 40mL of deionized water to the beaker, then raise the temperature to 100°C, and keep the temperature constant for 15min; then cool the solution in the beaker to room temperature, add 70ml of deionized water to dilute, the solution turns bright yellow, and then add ...

Embodiment 2

[0030] A kind of preparation method of graphene-nanometer titanium dioxide composite photocatalyst, concrete steps are as follows:

[0031] exist In the preparation step of graphene-nanometer titania composite photocatalyst:

[0032] 5.8g cetyltrimethylammonium bromide is dissolved in the mixed solution of 10ml n-amyl alcohol and 60ml n-hexane, all the other are with embodiment 1.

Embodiment 3

[0034] A kind of preparation method of graphene-nanometer titanium dioxide composite photocatalyst, concrete steps are as follows:

[0035] exist In the preparation step of graphene-nanometer titania composite photocatalyst:

[0036] 5.8g cetyltrimethylammonium bromide is dissolved in the mixed solution of 20ml n-amyl alcohol and 50ml n-hexane, all the other are with embodiment 1.

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Abstract

The invention relates to a preparation method for a graphene / nanometer titanium dioxide composite photocatalyst. The graphene / nanometer titanium dioxide composite photocatalyst is prepared from graphite powder, concentrated sulfuric acid, titanium trichloride, n-hexane, n-amyl alcohol and cetyltrimethylammonium bromide through a hydrothermal reaction. The preparation method provided by the invention has the advantages of simple synthesis, convenient operation, low cost and no pollution; and the prepared graphene / nanometer titanium dioxide composite photocatalyst has excellent photocatalytic performance and strong ability of degrading organic pollutants, can be cyclically used and further has the characteristics of adsorption.

Description

technical field [0001] The invention relates to a preparation method of a graphene-titanium dioxide composite photocatalyst, specifically belonging to the technical field of photocatalysts. Background technique [0002] With the rapid development of science and technology, human living standards are gradually rising. Our country has made great strides in economic growth, and productivity has been greatly improved. However, in many areas of our country, the economy has been greatly improved at the cost of destroying the environment. Therefore, we can see small squares built everywhere, and a large amount of industrial sewage is discharged into the river. The pm2.5 index only increases. Our The living environment is worrying. Water is the source of life, and water pollution has become the common enemy of all mankind. How to reduce the impact of water pollution is a problem we must consider. Now in terms of sewage treatment, there are adsorption, artificial salvage, etc. All...

Claims

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Application Information

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IPC IPC(8): B01J21/18B01J35/10C02F1/30C02F101/38
CPCC02F1/30B01J21/18C02F2101/308C02F2101/38C02F2305/10B01J35/39B01J35/61Y02W10/37
Inventor 肖针谢宇薛丁乾王世军古运财宋冬冬贺晶
Owner NANCHANG HANGKONG UNIVERSITY
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