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Multi-edge MoS2 nano piece/graphene composite nanomaterial and preparation method thereof

A composite nanomaterial and graphene composite technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc.

Inactive Publication Date: 2014-10-08
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, so far, multi-edge MoS 2 Nanosheet and graphene composite nanomaterials and their preparation have not been reported yet

Method used

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  • Multi-edge MoS2 nano piece/graphene composite nanomaterial and preparation method thereof
  • Multi-edge MoS2 nano piece/graphene composite nanomaterial and preparation method thereof
  • Multi-edge MoS2 nano piece/graphene composite nanomaterial and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Ultrasonic disperse 2.5 mmol graphene oxide in 60 mL deionized water, then add 0.4 mL ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate (see figure 1 Schematic diagram), and stir well;

[0026] 2) Then add 0.76 g (6.25 mmol) L-cysteine ​​and 0.3 g (1.25 mmol) sodium molybdate (Na 2 MoO 4 2H 2 O), and keep stirring to completely dissolve L-cysteine ​​and sodium molybdate, and adjust the volume to about 80 mL with deionized water;

[0027] 3) Transfer the obtained mixture to a 100 mL hydrothermal reaction kettle, seal the reaction kettle and place it in a constant temperature oven. After hydrothermal reaction at 240 °C for 24 h, let it cool down to room temperature naturally, and separate it by centrifugation. Collect the solid product, wash it thoroughly with deionized water, and dry it under vacuum at 100 °C. The obtained hydrothermal solid product is heat-treated at 500 °C for 2 h in a nitrogen / hydrogen mixed atmosphere, and the volume fraction of hydrog...

Embodiment 2

[0035] 1) Ultrasonically disperse 3.75 mmol of graphene oxide in 60 mL of deionized water, and then add 0.8 mL of ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate (see figure 1 Schematic diagram), and stir well;

[0036] 2) Then add 0.76 g (6.25 mmol) L-cysteine ​​and 0.3 g (1.25 mmol) sodium molybdate (Na 2 MoO 4 2H 2 O), and keep stirring to completely dissolve L-cysteine ​​and sodium molybdate, and adjust the volume to about 80 mL with deionized water;

[0037] 3) Transfer the obtained mixture to a 100 mL hydrothermal reaction kettle, seal the reaction kettle and place it in a constant temperature oven. After hydrothermal reaction at 240 °C for 24 h, let it cool down to room temperature naturally, and separate it by centrifugation. Collect the solid product, wash it thoroughly with deionized water, and dry it under vacuum at 100 °C. The obtained hydrothermal solid product is heat-treated at 500 °C for 2 h in a nitrogen / hydrogen mixed atmosphere, and the volume ...

Embodiment 3

[0040] 1) Ultrasonic disperse 2.5 mmol graphene oxide in 60 mL deionized water, then add 1.0 mL ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate, and stir thoroughly;

[0041] 2) Then add 12.5 mmol of L-cysteine ​​and 2.5 mmol of sodium molybdate (Na 2 MoO 4 2H 2 O), and keep stirring to completely dissolve L-cysteine ​​and sodium molybdate, and adjust the volume to about 80 mL with deionized water;

[0042] 3) Transfer the obtained mixture to a 100 mL hydrothermal reaction kettle, seal the reaction kettle and place it in a constant temperature oven. After hydrothermal reaction at 240 °C for 24 h, let it cool down to room temperature naturally, and separate it by centrifugation. Collect the solid product, wash it thoroughly with deionized water, and dry it under vacuum at 100 °C. The obtained hydrothermal solid product is heat-treated at 500 °C for 2 h in a nitrogen / hydrogen mixed atmosphere, and the volume fraction of hydrogen in the mixed gas is 10% , to prepare...

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Abstract

The invention discloses a multi-edge MoS2 nano piece / graphene composite nanomaterial and a preparation method thereof, wherein the multi-edge MoS2 nano piece / graphene composite nanomaterial is formed by compounding few layers of multi-edge MoS2 nano pieces and graphene; the ratio of the amount of substance of MoS2 to the graphene is (1:1)-(1:4); the preparation method comprises the steps of firstly, carrying out ultrasonic dispersion on graphene oxide into deionized water, feeding ionic liquid, and fully stirring; sequentially feeding L-cysteine and sodium molybdate, fully mixing for fully dissolving to obtain a mixed disperse system, transferring the mixed disperse system into a hydrothermal reaction kettle, and carrying out hydrothermal reaction for 24 hours at the temperature of 230-250 DEG C; and naturally cooling to the room temperature to obtain a solid hydrothermal product, carrying out centrifugal collection on the solid hydrothermal product, washing, drying, and carrying out heat treatment to obtain the multi-edge MoS2 nano piece / graphene composite nanomaterial. The method has the characteristics of being simple and convenient, and has the advantage of being easy to expand in industrialized application. The prepared composite nanomaterial is wide in application range.

Description

technical field [0001] The present invention relates to composite nanomaterials and preparation methods thereof, in particular to multi-edge MoS 2 The nanosheet / graphene composite nanomaterial and its hydrothermal preparation method belong to the technical field of inorganic composite nanomaterials. Background technique [0002] Two-dimensional nanomaterials have many excellent properties due to their unique morphology, and their research has aroused great interest. Graphene is the most typical two-dimensional nanomaterial. Its unique two-dimensional nanosheet structure gives it many unique physical, chemical and mechanical properties. It has important scientific research significance and broad technical application prospects. Graphene has extremely high specific surface area, high electrical and thermal conductivity, high charge mobility, and excellent mechanical properties. These excellent properties make graphene widely used in micro-nano electronic devices, energy stora...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/366H01M4/5815H01M4/625H01M2004/021Y02E60/10
Inventor 陈涛陈卫祥马琳孙虎叶剑波陈倩男吴庆银
Owner ZHEJIANG UNIV
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