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Graphene material modified by water-soluble anthraquinone compound and preparation method of graphene material

A compound and graphene technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, water pollutants, etc., can solve problems such as accelerating the anaerobic transformation of refractory organic matter, secondary pollution, etc. Achieve the effect of facilitating attachment growth, accelerating anaerobic transformation, and rough surface

Active Publication Date: 2014-05-21
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention overcomes the deficiencies of the original technology, selects graphene with excellent electrical conductivity, mechanical properties, thermal conductivity, high specific surface area, good mechanical properties and stable structure as the carrier for immobilizing water-soluble anthraquinone compounds, and uses chemical methods to dissolve the water-soluble anthraquinone compounds. Non-toxic anthraquinone compounds are covalently fixed on the surface of graphene, which solves the technical problem that it is easily lost with the water as a redox mediator and causes secondary pollution. At the same time, the graphene modified by water-soluble quinone compounds has better catalytic performance and can Accelerated anaerobic conversion of refractory organic matter

Method used

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  • Graphene material modified by water-soluble anthraquinone compound and preparation method of graphene material
  • Graphene material modified by water-soluble anthraquinone compound and preparation method of graphene material
  • Graphene material modified by water-soluble anthraquinone compound and preparation method of graphene material

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Effect test

Embodiment 1

[0017] ① Graphene containing amino groups: Weigh 0.1g of graphite oxide and disperse it in 100mL of deionized water, add 0.1-0.9mL of ammonia water to adjust the pH to 10, add 2mL of diethylenetriamine when the temperature rises to 98°C, stir for 3 hours, vacuum pump Filter and dry to obtain the graphene containing amino group, the preparation method of graphite oxide is to obtain according to the improved Hummers method; 2. the graphene modified by water-soluble anthraquinone compound: 0.1g graphene containing amino group is dispersed in dichloromethane and no In the water-ethanol mixture (v / v=1:1), add 2.16mmol / L anthraquinone compound solution containing sulfonyl chloride group, react at 30°C for 0.5h, and dry at 40°C in a constant temperature drying oven to obtain water-soluble anthraquinone Compound-modified graphene. The mass percent of the water-soluble anthraquinone compound is 1.01%.

Embodiment 2

[0019] ① Graphene containing amino groups: Weigh 0.1g of graphite oxide and disperse it in 100mL of deionized water, add 0.1-0.9mL of ammonia water to adjust the pH to 10, add 6mL of diethylenetriamine when the temperature rises to 98°C, stir for 6 hours, vacuum pump Filter and dry to obtain the graphene containing amino group, the preparation method of graphite oxide is to obtain according to the improved Hummers method; 2. the graphene modified by water-soluble anthraquinone compound: 0.1g graphene containing amino group is dispersed in dichloromethane and no In the water-ethanol mixture (v / v=1:1), add 4.32mmol / L anthraquinone compound solution containing sulfonyl chloride group, react at 30°C for 2h, and dry at 40°C in a constant temperature drying oven to obtain water-soluble anthraquinone compound modified graphene. The mass percentage of water-soluble anthraquinone compound is 4.6%.

Embodiment 3

[0021] ① Graphene containing amino groups: Weigh 0.1g of graphite oxide and disperse it in 100mL of deionized water, add 0.1-0.9mL of ammonia water to adjust the pH to 10, add 3mL of diethylenetriamine when the temperature rises to 98°C, stir for 6 hours, vacuum pump Filter and dry to obtain the graphene containing amino group, the preparation method of graphite oxide is to obtain according to the improved Hummers method; 2. the graphene modified by water-soluble anthraquinone compound: 0.1g graphene containing amino group is dispersed in dichloromethane and no In the water-ethanol mixture (v / v=1:1), add 1.08mmol / L anthraquinone compound solution containing sulfonyl chloride group, react at 30°C for 1h, and dry at 40°C in a constant temperature drying oven to obtain water-soluble anthraquinone compound modified graphene. The mass percent of the water-soluble anthraquinone compound is 2.8%. The anthraquinone compound containing a sulfonyl chloride group is derived from a sulfo...

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Abstract

The invention discloses an oxidized graphene material modified by a water-soluble anthraquinone compound and a preparation method of the graphene material and belongs to the technical field of water treatment of environmental engineering. The mass percent of the water-soluble anthraquinone compound in the material is 1-5%. The preparation method comprises the following steps: dispersing oxidized graphene into de-ionized water; adjusting the pH (Potential of Hydrogen) to 9-11 by using ammonia water; adding diethylenetriamine and reacting under a water bath condition at the temperature of higher than 95 DEG C; drying to obtain amino-modified graphene powder; dispersing the amino-modified graphene powder into a mixed solution of dichloromethane and absolute ethyl alcohol with the volume ratio of not more than 1 to obtain a mixed system in which the mass volume percent of the amino-modified graphene is 0.1%; and adding a dichloromethane solution of an anthraquinone compound containing a sulfonyl chloride radical and reacting at a room temperature. The material has a very good catalytic performance and the anaerobic organism conversion speed of organic matters which are difficult to degrade can be improved; the secondary pollution problem to the environment, caused by the loss of the water-soluble anthraquinone compound, is solved.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering water treatment, and relates to a graphene material modified by a water-soluble anthraquinone compound and a preparation method thereof. Background technique [0002] With the rapid development of human society and the continuous improvement of the level of industrialization, a large amount of refractory organic wastewater (such as wastewater containing halogenated, azo and nitroaromatics) is discharged into the environment. Biological method has become a commonly used treatment method because of its economical efficiency and environmental friendliness. Studies have shown that halogenated groups, azo bonds, and nitro groups have extremely strong electron-withdrawing effects, making it difficult for compounds containing these groups to be degraded directly through oxidation. After anaerobic biotransformation of these refractory organics, their subsequent aerobic biodegradability ...

Claims

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Application Information

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IPC IPC(8): B01J31/02C02F3/28C02F101/38C02F101/36
Inventor 吕红张海坤王竞周集体周杨
Owner DALIAN UNIV OF TECH
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