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WS2 nanotile and graphene composite nanomaterial and preparation method thereof

A technology of composite nanomaterials and graphene composites, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as WS2 nanowatt/graphene composite nanomaterials that have not been reported, and achieve Strong electrostatic interaction and strong hydrophobic effect

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, WS2 nanowatt / graphene composite nanomaterials and their preparation have not been reported

Method used

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  • WS2 nanotile and graphene composite nanomaterial and preparation method thereof
  • WS2 nanotile and graphene composite nanomaterial and preparation method thereof
  • WS2 nanotile and graphene composite nanomaterial and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Ultrasonically disperse 2.5 mmol of graphene oxide in 60 mL of deionized water, then add 0.8 mmol of gemini surfactant N-dodecylpropylenediamine diammonium bromide, and stir thoroughly;

[0023] 2) Then add 0.75 g (6.25 mmol) L-cysteine ​​and 1.25 mmol ammonium thiotungstate in turn, and keep stirring to completely dissolve L-cysteine ​​and ammonium thiotungstate, adjust with deionized water Volume up to about 80 mL;

[0024] 3) Transfer the obtained mixed solution to a 100 mL hydrothermal reaction kettle, put the reaction kettle into a constant temperature oven, and after hydrothermal reaction at 230 °C for 24 h, let it cool down to room temperature naturally, and collect the solid by centrifugation The product was washed thoroughly with deionized water and dried under vacuum at 100°C;

[0025] 4) The solid product obtained above was heat-treated at 800°C for 2 hours in a nitrogen / hydrogen mixed atmosphere to prepare WS 2 Nanowatt / graphene composite nanomaterial, ...

Embodiment 2

[0033] 1) Ultrasonically disperse 2.5 mmol of graphene oxide in 60 mL of deionized water, then add 0.8 mmol of gemini surfactant N-dodecylpropylenediamine diammonium bromide, and stir thoroughly;

[0034] 2) Then add 1.50 g (12.5 mmol) L-cysteine ​​and 2.5 mmol ammonium thiotungstate in sequence, and keep stirring to completely dissolve L-cysteine ​​and ammonium thiotungstate, adjust with deionized water Volume up to about 80 mL;

[0035] 3) Transfer the obtained mixture to a 100 mL hydrothermal reaction kettle, put the reaction kettle into a constant temperature oven, and after hydrothermal reaction at 220 °C for 24 h, let it cool down to room temperature naturally, and collect the solid by centrifugation The product was washed thoroughly with deionized water and dried under vacuum at 100°C;

[0036] 4) The solid product obtained above was heat-treated at 800°C for 2 hours in a nitrogen / hydrogen mixed atmosphere to prepare WS 2 Nanowatt / graphene composite nanomaterial, the ...

Embodiment 3

[0039] 1) Ultrasonically disperse 3.75 mmol of graphene oxide in 60 mL of deionized water, then add 1.2 mmol of gemini surfactant N-dodecylpropylenediamine diammonium bromide, and stir thoroughly;

[0040] 2) Then add 6.25 mmol L-cysteine ​​and 1.25 mmol ammonium thiotungstate in sequence, and keep stirring to completely dissolve L-cysteine ​​and ammonium thiotungstate, adjust the volume to about 80 with deionized water mL;

[0041] 3) Transfer the obtained mixed solution to a 100 mL hydrothermal reaction kettle, and add deionized water to adjust the volume to 80 mL, put the reaction kettle in a constant temperature oven, and conduct a hydrothermal reaction at 240 °C for 24 h, let It was naturally cooled to room temperature, and the solid product was collected by centrifugation, washed thoroughly with deionized water, and dried under vacuum at 100°C;

[0042] 4) The solid product obtained above was heat-treated at 800°C for 2 hours in a nitrogen / hydrogen mixed atmosphere to p...

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Abstract

The invention discloses a WS2 nanotile and graphene composite nanomaterial and a preparation method thereof. The composite nanomaterial is formed by compounding graphene and a WS2 nanotile with few layers and graphene, wherein the WS2 nanotile has 2-6 layers and averagely has 3-5 layers, and the mass ratio of the WS2 nanotile to the graphene ranges from 1 to 1-1 to 4. The preparation method comprises the following steps of firstly, ultrasonically dispersing graphene oxide into deionized water; then, adding a gemini surfactant, and sufficiently stirring; next, sequentially adding L-cysteine and ammonium thiotungstate, and sufficiently stirring to dissolve L-cysteine and ammonium thiotungstate; and transferring the mixed dispersion system into a hydrothermal reaction kettle to carry out hydrothermal reaction at the temperature of 230-250 DEG C for 20-24h, then, naturally cooling to the room temperature, centrifuging to collect a solid product, sufficiently washing with deionized water, drying, and finally, carrying out heat treatment to obtain the WS2 nanotile and graphene composite nanomaterial. The method disclosed by the invention is simple, convenient and free of consuming organic solvents.

Description

Technical field [0001] The invention involves composite nanomaterials and its preparation methods, especially WS 2 Nanowy / graphene composite nanomaterials and its water -heat preparation methods belong to the field of inorganic composite nanomaterials. Background technique [0002] The two -dimensional ultra -thin nano -piece material has many excellent characteristics with its unique appearance, and its research has aroused great interest in people.Graphene is the most typical two -dimensional nanometer material. Its unique two -dimensional nanocrine structure makes it many unique physical, chemical and mechanics and other performance, and has important scientific research significance and extensive technical application prospects.Graphene has extremely high surface area, high conductivity and thermal conductivity, high charge migration rate, excellent mechanical properties. These excellent characteristics make graphene in microfanan electronic devices, energy storage materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/58H01M4/38
CPCB82Y30/00B82Y40/00H01M4/136H01M4/1397H01M4/366H01M4/5815H01M4/625H01M2004/021Y02E60/10
Inventor 陈卫祥陈涛黄国创王臻
Owner ZHEJIANG UNIV
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