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Mo0.5W0.5S2 nanotile and graphene composite nanomaterial and preparation method thereof

A composite nanomaterial and graphene composite technology, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve the effect of strong hydrophobicity and strong electrostatic interaction

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

[0007] However, so far, Mo 0.5 W 0.5 S 2 Nanowatt and graphene composite nanomaterials and their preparation have not been reported yet

Method used

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  • Mo0.5W0.5S2 nanotile and graphene composite nanomaterial and preparation method thereof
  • Mo0.5W0.5S2 nanotile and graphene composite nanomaterial and preparation method thereof
  • Mo0.5W0.5S2 nanotile and graphene composite nanomaterial and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) Disperse 2.5 mmol of graphene oxide ultrasonically in 60 mL of deionized water, then add 0.8 mmol of gemini surfactant N-dodecyl propylene diamine bis bromide, and stir thoroughly;

[0024] 2) Then add 0.76g (6.25 mmol) of L-cysteine, 0.625 mmol of ammonium thiomolybdate and 0.625 mmol of ammonium thiotungstate in sequence, and keep stirring to make L-cysteine ​​and ammonium thiomolybdate Dissolve completely with ammonium thiotungstate, adjust the volume to about 80 mL with deionized water;

[0025] 3) Transfer the obtained mixture to a 100 mL hydrothermal reactor, put the reactor in a constant temperature oven, and after hydrothermal reaction at 230℃ for 24 h, let it cool to room temperature naturally, and collect the solid by centrifugation The product was thoroughly washed with deionized water and dried in vacuum at 100°C;

[0026] 4) Heat the solid product obtained above in a nitrogen / hydrogen mixed atmosphere at 800℃ for 2h to prepare Mo 0.5 W 0.5 S 2 Nanowatt / graphen...

Embodiment 2

[0034] 1) Disperse 2.5 mmol of graphene oxide ultrasonically in 60 mL of deionized water, then add 0.8 mmol of gemini surfactant N-dodecyl propylene diamine bis bromide, and stir thoroughly;

[0035] 2) Then add 1.50g (12.5 mmol) L-cysteine, 1.25 mmol ammonium thiomolybdate and 1.25 mmol ammonium thiotungstate in sequence, and keep stirring to make L-cysteine ​​and ammonium thiomolybdate Dissolve completely with ammonium thiotungstate, adjust the volume to about 80 mL with deionized water;

[0036] 3) Transfer the obtained mixture to a 100 mL hydrothermal reaction kettle, put the reaction kettle in a constant temperature oven, after hydrothermal reaction at 220 ℃ for 24 h, let it cool to room temperature naturally, and collect the solid by centrifugation The product was thoroughly washed with deionized water and dried in vacuum at 100°C;

[0037] 4) Heat the solid product obtained above in a nitrogen / hydrogen mixed atmosphere at 800℃ for 2h to prepare Mo 0.5 W 0.5 S 2 The composite ...

Embodiment 3

[0040] 1) Disperse 3.75 mmol of graphene oxide ultrasonically in 60 mL of deionized water, then add 1.2 mmol of gemini surfactant N-dodecyl propylene diamine bis bromide, and stir thoroughly;

[0041] 2) Then add 0.76g (6.25 mmol) of L-cysteine, 0.625 mmol of ammonium thiomolybdate and 0.625 mmol of ammonium thiotungstate in sequence, and keep stirring to make L-cysteine ​​and ammonium thiomolybdate Dissolve completely with ammonium thiotungstate, adjust the volume to about 80 mL with deionized water;

[0042] 3) Transfer the obtained mixture to a 100 mL hydrothermal reactor, and add deionized water to adjust the volume to 80 mL, put the reactor in a constant temperature oven, and hydrothermally react at 240 ℃ for 24 h, let It is naturally cooled to room temperature, and the solid product is collected by centrifugal separation, washed thoroughly with deionized water, and dried in vacuum at 100°C;

[0043] 4) Heat the solid product obtained above in a nitrogen / hydrogen mixed atmosphe...

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Abstract

The invention discloses a Mo0.5W0.5S2 nanotile and graphene composite nanomaterial and a preparation method thereof. The Mo0.5W0.5S2 nanotile and graphene composite nanomaterial is formed by compounding a Mo0.5W0.5S2 nanotile with few layers and graphene, wherein the mass ratio of the Mo0.5W0.5S2 nanotile to 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, ammonium thiomolybdate and ammonium thiotungstate, and sufficiently stirring to dissolve L-cysteine, ammonium thiomolybdate 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 at a nitrogen and hydrogen mixed atmosphere to obtain the Mo0.5W0.5S2 nanotile and graphene composite nanomaterial. The method disclosed by the invention has the characteristics of simplicity and convenience; in addition, no organic solvent is needed to be consumed. The prepared composite nanomaterial is widely applied as a lithium ion battery electrode material and an electrocatalytic material.

Description

technical field [0001] The present invention relates to the preparation method of composite nano material, relate in particular to Mo 0.5 W 0.5 S 2 The invention discloses a hydrothermal preparation method of a nanowatt and graphene composite nanomaterial, belonging 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 ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/62B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/366H01M4/5815H01M4/625Y02E60/10
Inventor 陈卫祥马琳黄国创王臻叶剑波
Owner ZHEJIANG UNIV
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