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Molybdenum disulfide doped linear polymer modified graphene composite material and preparation method thereof

A linear polymer and composite material technology, applied in the direction of hybrid capacitor electrodes, electrical components, battery electrodes, etc., can solve the problems of expensive platinum and limited application, and achieve uniform dispersion, excellent electrochemical performance, and small particles.

Active Publication Date: 2017-01-18
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used catalyst is platinum, but the expensive cost of platinum limits its application

Method used

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  • Molybdenum disulfide doped linear polymer modified graphene composite material and preparation method thereof
  • Molybdenum disulfide doped linear polymer modified graphene composite material and preparation method thereof
  • Molybdenum disulfide doped linear polymer modified graphene composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] (1) Preparation of graphene: Using 325 mesh graphite powder as raw material, graphene oxide was prepared by the improved hummer method, and the obtained graphite oxide was characterized by XRD, XPS, AFM and other methods.

[0032] (2) Preparation of 2,4-dinitrochlorobenzene: Get 50g of p-nitrochlorobenzene and pour it into a 2L round-bottomed flask, and add 120ml of fuming nitric acid dropwise to the flask under magnetic stirring to make all of the p-nitrochlorobenzene Dissolve, and then add 20ml of concentrated sulfuric acid dropwise to react for half an hour. After the system is cooled to room temperature, add ice water to quench the reaction to obtain a yellow solid, then wash with 500ml of deionized water, filter and vacuum dry to obtain 2,4-dinitrochloride benzene.

[0033] (3) Preparation of BDB: Put 50ml of acetonitrile into a 250ml round bottom flask, then add 2g of 4,4'-bipyridine and 10mg of 2,4-dinitrochlorobenzene into the flask, stir well to obtain a yellow...

Embodiment 2

[0040] (1) Preparation of graphene: Using 325 mesh graphite powder as raw material, graphene oxide was prepared by the improved hummer method, and the obtained graphite oxide was characterized by XRD, XPS, AFM and other methods.

[0041] (2) Preparation of 2,4-dinitrochlorobenzene: Get 50g of p-nitrochlorobenzene and pour it into a 2L round-bottomed flask, and add 150ml of fuming nitric acid dropwise to the flask under magnetic stirring to make all of the p-nitrochlorobenzene Dissolve, and then add 20ml of concentrated sulfuric acid dropwise to react for half an hour. After the system is cooled to room temperature, add ice water to quench the reaction to obtain a yellow solid, then wash with 500ml of deionized water, filter and vacuum dry to obtain 2,4-dinitrochloride benzene.

[0042] (3) Preparation of BDB: Put 50ml of acetonitrile into a 250ml round bottom flask, then add 2g of 4,4'-bipyridine and 10mg of 2,4-dinitrochlorobenzene into the flask, stir well to obtain a yellow...

Embodiment 3

[0049] (1) Preparation of graphene: Using 325 mesh graphite powder as raw material, graphene oxide was prepared by the improved hummer method, and the obtained graphite oxide was characterized by XRD, XPS, AFM and other methods.

[0050] (2) Preparation of 2,4-dinitrochlorobenzene: Get 50g of p-nitrochlorobenzene and pour it into a 2L round-bottomed flask, and add 120ml of fuming nitric acid dropwise to the flask under magnetic stirring to make all of the p-nitrochlorobenzene Dissolve, and then add 20ml of concentrated sulfuric acid dropwise to react for half an hour. After the system is cooled to room temperature, add ice water to quench the reaction to obtain a yellow solid, then wash with 500ml of deionized water, filter and vacuum dry to obtain 2,4-dinitrochloride benzene.

[0051] (3) Preparation of BDB: Put 50ml of acetonitrile into a 250ml round bottom flask, then add 2g of 4,4'-bipyridine and 10mg of 2,4-dinitrochlorobenzene into the flask, stir well to obtain a yellow...

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Abstract

The invention discloses a molybdenum disulfide doped linear polymer modified graphene composite material and a preparation method thereof. First of all, 1,1'-bis(2,4-dinitrophenyl)-4,4'-bipyridinium dichloride BDB and oxidized graphene are prepared, then oxidized graphene modified by a linear bipyridine polymer is prepared through Suzuki reaction, then molybdate is exchanged to the linear bipyridine polymer through an anion-exchange process, then a moly-sulfide disulfide graphene composite material precursor is obtained through co-hydrothermal sulfidation with thioacetamide, and finally, the molybdenum disulfide graphene composite material is obtained through high-temperature desulphurization. According to the invention, the uniformly dispersed molybdenum disulfide graphene composite material is obtained based on charge interaction between the BDB and the molybdate, the preparatiton method is simple, the electrochemical perforamcne of the prepared material is excellent, at the same time, the method has the potential of large-scale preparation, and the method can be applied to such fields as electrocatalysis, hydrogen evolution catalysis, supercapacitors and the like.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and relates to a molybdenum disulfide-doped linear polymer-modified graphene composite material and a preparation method thereof. Background technique [0002] With the development of modern industry and the improvement of people's living standards, the tail gas emitted by fossil fuel combustion, hydrogen as a very promising new energy source can replace fossil fuels, but its large-scale industrial production restricts its development. Hydrogen production by electrolysis of water, as an energy-saving and recyclable hydrogen production process, has gradually become a research hotspot. At present, the commonly used catalyst is platinum, but the high cost of platinum limits its application. Therefore, the development of non-precious metal catalysts has become the key. [0003] MoS 2 With good electrocatalytic hydrogen evolution performance, the high catalytic activity of molybdenum d...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/32H01M4/90H01M4/96
CPCH01G11/30H01G11/32H01M4/8652H01M4/90H01M4/9083H01M4/96Y02E60/13Y02E60/50
Inventor 韩生江新泽韦焕明王爱民蔺华林陈红艳常兴兰国贤付宁
Owner SHANGHAI INST OF TECH
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