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Preparation method and application of graphene-molybdenum disulfide composite material

A technology of molybdenum disulfide and composite materials, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve highly toxic metabolic intermediates and poor ability to deal with trace pollutants, which cannot be effectively Remove such pollutants, long production cycle and other problems, meet the requirements of green production equipment, short adsorption time, and reduce pollution

Inactive Publication Date: 2017-02-08
NANJING MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of the invention is complex and the production cycle is long
[0004] The current methods for removing organic pollutants in water are generally unable to effectively remove such pollutants, and there are defects such as high cost, difficult control, easy production of highly toxic metabolic intermediates, and poor ability to deal with trace pollutants.

Method used

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  • Preparation method and application of graphene-molybdenum disulfide composite material
  • Preparation method and application of graphene-molybdenum disulfide composite material
  • Preparation method and application of graphene-molybdenum disulfide composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of preparation method concrete steps of graphene-molybdenum disulfide composite material are as follows:

[0030] (1) Weigh 1.5g of flake graphite and place it in a container, add 180mL of concentrated sulfuric acid and 20mL of concentrated phosphoric acid into the container filled with flake graphite respectively, and stir electrically for 30min to obtain the mixed solution;

[0031] (2) cooling the mixed solution in an ice bath, and adding potassium permanganate 5 times to the container during the cooling process, adding 9g of potassium permanganate and stirring evenly to obtain the cooling solution;

[0032] (3) Put the cooling solution prepared in step (2) in a constant temperature water bath at 50°C and keep stirring for 12 hours to obtain the heating solution. Pour the heating solution into a container with ice-water mixture and transfer it In the fume hood, add hydrogen peroxide dropwise to the container containing the mixture of heating liquid and ice wat...

Embodiment 2

[0040] (1) Weigh 2g of flake graphite and place it in a container, add 200mL of concentrated sulfuric acid and 30mL of concentrated phosphoric acid into the container filled with flake graphite respectively, and stir electrically for 35min to obtain the mixed solution;

[0041] (2) The mixed solution is cooled in an ice bath, and in the process of cooling, potassium permanganate is added 8 times to the container, and 9g of potassium permanganate is added and stirred evenly to obtain the cooling liquid;

[0042] (3) Place the cooling solution prepared in step (2) in a constant temperature water bath at 50°C and continue to stir for 15 hours to obtain the heating solution. Pour the heating solution into a container containing an ice-water mixture and transfer it In the fume hood, add hydrogen peroxide dropwise to the container containing the mixture of heating liquid and ice water until it turns golden yellow and stop the dropwise addition to obtain the reaction solution;

[004...

Embodiment 3

[0050] (1) Weigh 1.5g of flake graphite and place it in a container, add 190mL of concentrated sulfuric acid and 25mL of concentrated phosphoric acid into the container filled with flake graphite respectively, and stir electrically for 30min to obtain the mixed solution;

[0051] (2) The mixed solution is cooled in an ice bath, and in the process of cooling, potassium permanganate is added 6 times to the container, and 9g of potassium permanganate is added and stirred evenly to obtain the cooling liquid;

[0052] (3) Place the cooling solution prepared in step (2) in a constant temperature water bath at 50°C and continue to stir for 13 hours to obtain a heating solution. Pour the heating solution into a container containing a mixture of ice and water and transfer it to In the fume hood, add hydrogen peroxide dropwise to the container containing the mixture of heating liquid and ice water until it turns golden yellow and stop the dropping to obtain the reaction solution;

[005...

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Abstract

The invention discloses a preparation method and application of a graphene-molybdenum disulfide composite material, and belongs to the technical field of a new energy material. The method comprises the concrete steps that graphite oxide is taken and is dissolved in a container containing water; Na2MoO4.2H2O is added into the container; (2) the pH range of the solution is regulated to be 6 to 6.5, and thioacetamide is added into the container; (3) the solution is transferred into a polytetrafluoroethylene reaction kettle to take reaction for 18 to 30h; centrifugal precipitation is performed to obtain sediments and supernate; (4) removing the supernate, and the sediments are washed with the deionized water for 5 to 6 times; (5) the sediments are put into a 60 DEG C environment to be dried for 7 to 8h; the graphene-molybdenum disulfide composite material can be prepared. The preparation method is simple; the prepared graphene-molybdenum disulfide composite material has a good absorption effect on organic pollutants in water; green and environment-friendly effects are achieved; the requirements on production equipment are lower; wide application prospects are realized.

Description

technical field [0001] The invention relates to the technical field of new energy materials, in particular to a preparation method and application of a graphene-molybdenum disulfide composite material. Background technique [0002] With the continuous increase of the content of organic pollutants in water, the research on the removal methods of organic pollutants has aroused widespread attention at home and abroad. Since the discovery of graphene materials in 2004, graphene materials have played a pivotal role in materials with excellent physical and chemical properties. However, due to the thin layered structure of graphene, there are still various problems in its real use; two-dimensional structure nanomaterials, especially layered transition metal dichalcogenides, due to their excellent Electrochemical properties are widely used in catalysts, sensors, electrode materials for capacitors and lithium-ion batteries. Molybdenum disulfide is a typical transition metal dichalc...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/30
CPCB01J20/20B01J20/0266C02F1/281C02F2101/30
Inventor 赵鸿雁郝思景朱萍李涛毛子晴开莉娅
Owner NANJING MEDICAL UNIV
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