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Graphene/molybdenum disulfide composite material and liquid phase preparation method thereof

A technology of molybdenum disulfide and composite materials, applied in the fields of molybdenum sulfide, chemical instruments and methods, carbon compounds, etc., can solve the problems of no reports and no published patents, and achieve low experimental cost, high reaction yield, and safe experimental operation Effect

Inactive Publication Date: 2020-07-14
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In summary, in recent years, although the preparation methods of graphene / molybdenum disulfide composites have been rapidly developed, and the scope of application is also expanding, covering various optoelectronic devices such as photodetectors, field effect transistors, and solar cells, but The research on the synthesis of graphene / molybdenum disulfide composites by using the hydrothermal method without organic solvents has not been reported, and no related patents have been published

Method used

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  • Graphene/molybdenum disulfide composite material and liquid phase preparation method thereof
  • Graphene/molybdenum disulfide composite material and liquid phase preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The liquid phase preparation method of graphene / molybdenum disulfide composite material comprises the following steps:

[0028] Step 1, according to the mol ratio of graphene and molybdenum disulfide is that 10:1 takes by weighing respectively the graphene powder of 24mg and the ammonium tetrathiomolybdate powder of 52.056mg;

[0029] Step 2, dissolving the ammonium tetrathiomolybdate powder taken in step 1 in 15mL deionized water to form a mixed solution;

[0030] Step 3, stirring the mixed solution obtained in step 2 for 40 min at a speed of 700 rpm to form a uniformly dispersed solution;

[0031] Step 4, adding the graphene powder taken in step 1 into the uniformly dispersed solution obtained in step 3 to form a mixed solution;

[0032] Step 5, stirring the solution obtained in step 4 for 20 min at a speed of 700 rpm to form a uniformly dispersed solution;

[0033] Step 6. Pour the uniformly dispersed solution obtained in Step 5 into a stainless steel autoclave lin...

Embodiment 2

[0040] The liquid phase preparation method of graphene / molybdenum disulfide composite material comprises the following steps:

[0041] Step 1, according to the mol ratio of graphene and molybdenum disulfide is 5:1 to weigh the graphene powder of 12mg and the ammonium tetrathiomolybdate powder of 52.056mg respectively;

[0042] Step 2, dissolving the ammonium tetrathiomolybdate powder taken in step 1 in 15mL deionized water to form a mixed solution;

[0043] Step 3, stirring the mixed solution obtained in step 2 for 40 min at a speed of 700 rpm to form a uniformly dispersed solution;

[0044] Step 4, adding the graphene powder taken in step 1 into the uniformly dispersed solution obtained in step 3 to form a mixed solution;

[0045] Step 5, stirring the solution obtained in step 4 for 20 min at a speed of 700 rpm to form a uniformly dispersed solution;

[0046] Step 6. Pour the uniformly dispersed solution obtained in Step 5 into a stainless steel autoclave lined with polytetra...

Embodiment 3

[0051] The liquid phase preparation method of graphene / molybdenum disulfide composite material comprises the following steps:

[0052] Step 1, according to the mol ratio of graphene and molybdenum disulfide is 0.5:1 to weigh the graphene powder of 1.2mg and the ammonium tetrathiomolybdate powder of 52.056mg respectively;

[0053] Step 2, dissolving the ammonium tetrathiomolybdate powder taken in step 1 in 15mL deionized water to form a mixed solution;

[0054] Step 3, stirring the mixed solution obtained in step 2 for 40 min at a speed of 700 rpm to form a uniformly dispersed solution;

[0055] Step 4, adding the graphene powder taken in step 1 into the uniformly dispersed solution obtained in step 3 to form a mixed solution;

[0056] Step 5, stirring the solution obtained in step 4 for 20 min at a speed of 700 rpm to form a uniformly dispersed solution;

[0057] Step 6. Pour the uniformly dispersed solution obtained in Step 5 into a stainless steel autoclave lined with poly...

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Abstract

The invention belongs to the field of two-dimensional composite materials, and particularly relates to a graphene / molybdenum disulfide composite material and a liquid phase preparation method thereof.The structure of the composite material is a graphene microchip with the surface coated with molybdenum disulfide nanosheets. The specific preparation method comprises the following steps: firstly, dissolving ammonium tetrathiomolybdate and graphene powder into deionized water; transferring the mixed solution into a reaction container, and carrying out a hydrothermal reaction at high temperature;and finally, centrifuging and washing to obtain a reaction product. The band gap width of the molybdenum disulfide is regulated and controlled by changing the layer number of the molybdenum disulfide; so that light with different wavelengths can be absorbed, the spectral response range of a photoelectric device manufactured based on the composite material can be greatly expanded, and meanwhile, the sensitivity of the photoelectric device manufactured based on the composite material can be greatly expanded by utilizing the property of high carrier mobility of graphene.

Description

technical field [0001] The invention belongs to the field of two-dimensional composite materials, and in particular relates to a graphene / molybdenum disulfide composite material and a liquid phase preparation method thereof. Background technique [0002] Two-dimensional layered materials such as graphene and molybdenum disulfide have a unique planar structure, high conductivity, good flexibility, and high transparency. They have extremely broad application prospects in the field of next-generation portable, flexible, and high-performance optoelectronic devices. Graphene has extremely high carrier mobility, and its internal quantum conversion rate can be close to 100%. Molybdenum disulfide has the characteristics of adjustable band gap (1.2-1.8eV) and strong visible light absorption, and has a good choice for absorbing light. sex. But there are many deficiencies in both of them. For example, the absorption rate of graphene to visible light is very low, so the photoelectric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06C01B32/194B82Y40/00B82Y30/00
CPCC01G39/06C01B32/194B82Y40/00B82Y30/00C01P2004/80C01P2004/03C01P2002/82
Inventor 韩迎东张恩卿程振洲刘铁根胡浩丰
Owner TIANJIN UNIV
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