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Preparation method of reduced graphene oxide, reduced graphene oxide and application thereof

A graphene and graphene technology, applied in the field of material preparation and environmental protection, can solve problems such as restricting large-scale production of reduced graphene oxide, and achieve the effects of high yield, short adsorption time, and mild reaction conditions

Active Publication Date: 2017-07-14
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of utilizing these reducing agents, the use of high temperature, large amounts of organic solvents, and the use of toxic drugs limit the large-scale production of reduced graphene oxide.

Method used

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  • Preparation method of reduced graphene oxide, reduced graphene oxide and application thereof
  • Preparation method of reduced graphene oxide, reduced graphene oxide and application thereof
  • Preparation method of reduced graphene oxide, reduced graphene oxide and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A method for preparing reduced graphene oxide of the present invention includes the following steps:

[0044] (1) Weigh 200 mg of graphene oxide, add it to 100 ml of deionized water, and peel off ultrasonically for 0.5 h to form a graphene oxide mixture.

[0045] (2) Add 0 mg, 600 mg, 800 mg, 1000 mg and 4000 mg of EDDS to the graphene oxide mixture. After mixing uniformly by ultrasonic, place it in a microwave reactor at 95°C with magnetic stirring for 4 hours. After the reaction is complete The product was centrifuged at 7000rpm for 10min, washed with deionized water and filtered, and finally freeze-dried in vacuum at -110℃ for 3 days to obtain black powdered reduced graphene oxide, which were labeled ERG0, ERG3, and ERG4. , ERG5, ERG20.

Embodiment 2

[0055] An application of the reduced graphene oxide of the present invention in treating wastewater containing antibiotics includes the following steps:

[0056] Weigh the reduced graphene oxide labeled ERG0, ERG3, ERG4, ERG5, ERG20 prepared in Example 1, and the hydrazine hydrate reduced graphene oxide (GN) and graphene oxide (GO) in Comparative Example 1 each 10 mg In 25ml of tetracycline aqueous solution with a concentration of 100mg / L, place it in a constant temperature water bath at 25°C and 170rpm for 6 hours to vibrate and absorb, and pass the treated solution through a 0.22μm water filter membrane to complete the adsorption treatment of the tetracycline aqueous solution.

[0057] The content of tetracycline in the filtrate was determined by ultraviolet absorption spectrophotometry at a wavelength of 357nm, and the adsorption amount of tetracycline on different reduced graphene oxides was calculated. The results are as follows Image 6 Shown.

[0058] The results show that the...

Embodiment 3

[0060] An application of the reduced graphene oxide of the present invention in treating wastewater containing antibiotics includes the following steps:

[0061] Weigh 2mg, 4mg, 6mg, 8mg, 10mg, 12mg, 14mg, 16mg, 18mg, 20mg of the reduced graphene oxide ERG5 in Example 1 in 25ml with a concentration of 100mg / L tetracycline aqueous solution, and place it at 25℃, 170rpm In a constant temperature water bath for 6 hours, the treated solution is passed through a 0.22μm water filter membrane to complete the adsorption treatment of the tetracycline aqueous solution.

[0062] The content of tetracycline in the filtrate was determined by ultraviolet absorption spectrophotometry at a wavelength of 357nm, and the adsorption amount of tetracycline by reduced graphene oxide with different dosages was calculated. The results are as follows Figure 7 Shown.

[0063] The results show that the amount of tetracycline adsorbed by the reduced graphene oxide of the present invention decreases with the inc...

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Abstract

The invention discloses a preparation method of reduced graphene oxide, reduced graphene oxide and its application. The preparation method comprises: mixing graphene oxide with water, and ultrasonically peeling off to obtain a graphene oxide mixed liquid; The mixture of ethylenediamine disuccinic acid and ethylenediamine disuccinic acid is mixed, and the reduction reaction is carried out under microwave radiation to obtain reduced graphene oxide. The preparation method of the present invention has the advantages of simplicity, mild reaction conditions, low production cost, environmental protection and pollution-free, and reusable EDDS. Good, large specific surface area, large layer spacing, etc., can be widely used in the treatment of wastewater containing antibiotics, has the advantages of convenient operation in the treatment process, large adsorption capacity, short adsorption time, no secondary pollution, etc. Harmful treatment is of great significance to the development of graphene-based materials and their application in the environmental field.

Description

Technical field [0001] The invention belongs to the field of material preparation and environmental protection, and relates to a preparation method of reduced graphene oxide, reduced graphene oxide and applications thereof; specifically, it relates to a method for reducing graphene oxide by ethylenediamine disuccinic acid (EDDS), Reduced graphene oxide and its application in the treatment of antibiotic wastewater. Background technique [0002] Antibiotics are widely used as pharmaceutical preparations for human treatment and livestock feeding, and because these substances are difficult to be completely digested and absorbed in humans or animals, most of them are mixed in feces and are excreted, thereby causing potential harm to the environment. Especially in my country, the research results of the Guangzhou Institute of Geochemistry of the Chinese Academy of Sciences show that the use of antibiotics in China in 2013 was astonishing. The use of 16.2 tons of antibiotics a year, acc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F103/34
Inventor 袁兴中吴志斌钟华王侯陈晓红冷立健肖智华蒋龙波黎一夫曾光明
Owner HUNAN UNIV