Compound nano material of graphene and MoS2 and preparation method thereof

A technology of composite nanomaterials and graphene nanosheets, applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, to achieve the effects of improving tribological performance, mild reaction conditions, and enhancing electrochemical performance

Inactive Publication Date: 2011-08-03
ZHEJIANG UNIV
View PDF4 Cites 61 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, the synthesis of graphene / MoS with the assistance of L-cysteine 2 There are no public reports on composite nanomaterials and their preparation methods

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Compound nano material of graphene and MoS2 and preparation method thereof
  • Compound nano material of graphene and MoS2 and preparation method thereof
  • Compound nano material of graphene and MoS2 and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: Graphene and MoS 2 The preparation method of the composite nanomaterial:

[0031] 1) Preparation of graphite oxide nanosheets: Disperse 1.25mmol (0.015g) of graphite powder into 20mL of concentrated sulfuric acid in an ice bath at 0°C, and add 0.03g of KMnO 4 , the added KMnO 4 The mass of graphite is 3 times that of graphite, stir for 30 minutes, the temperature rises to about 30°C, add 45ml of deionized water, stir for 20 minutes, add 10ml of 30% H 2 o 2 , stirred for 5 minutes, centrifuged, and repeatedly washed with a mass concentration of 5% HCl solution, deionized water and acetone to obtain graphite oxide nanosheets;

[0032] 2) Dissolve 1.25mmol (0.303g) sodium molybdate in 63ml of deionized water to form a 0.02M solution, add 6.25mmol of L-cysteine ​​and stir evenly, the mixture of L-cysteine ​​and sodium molybdate The ratio of mass is 5.0: 1, then the 1st) step is added in this solution with the prepared graphite oxide nanosheet of graphite of 1...

Embodiment 2

[0035] Example 2: Graphene and MoS 2 The preparation method of the composite nanomaterial:

[0036] 1) Preparation of graphite oxide nanosheets: Disperse 2.5mmol (0.03g) of graphite powder into 25mL of concentrated sulfuric acid in an ice bath at 0°C, and add KMnO 4 , the added KMnO 4 The mass of graphite is 4 times that of graphite, stir for 40 minutes, the temperature rises to about 33 ° C, add 50ml of deionized water, stir for 25 minutes, add 12ml of H2O with a mass concentration of 30% 2 o 2 , stirred for 5-10 minutes, centrifuged, and repeatedly washed with a mass concentration of 5% HCl solution, deionized water and acetone to obtain graphite oxide nanosheets;

[0037] 2) Dissolve 1.25mmol (0.303g) of sodium molybdate in 63ml of deionized water to form a 0.02M solution, add 7.5mmol of L-cysteine ​​and stir evenly, wherein the amount of L-cysteine ​​and sodium molybdate The ratio of the amount of substance is 6: 1, then the graphite oxide nanosheets prepared by the gr...

Embodiment 3

[0039] Example 3: Graphene and MoS 2 The preparation method of the composite nanomaterial:

[0040] 1) Preparation of graphite oxide nanosheets: Disperse 5.0 mmol (0.06 g) of graphite powder into 25 mL of concentrated sulfuric acid in an ice bath at 0 °C, and add KMnO 4 , the added KMnO 4 The mass of graphite is 4 times that of graphite, stir for 50 minutes, the temperature rises to about 35°C, add 50ml of deionized water, stir for 30 minutes, add 20ml of H2O with a mass concentration of 30% 2 o 2 , stirred for 15 minutes, centrifuged, and repeatedly washed with a mass concentration of 5% HCl solution, deionized water and acetone to obtain graphite oxide nanosheets;

[0041] 2) Dissolve 1.25mmol (0.303g) sodium molybdate in 63ml deionized water to form a 0.02M solution, add 15mmol of L-cysteine ​​and stir evenly, the amount of L-cysteine ​​and sodium molybdate The ratio is 12: 1, then the 1st) step adds in this solution the graphite oxide nanosheet that the graphite of 5.0...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a compound nano material of graphene and molybdenum disulfide (MoS2) and a preparation method thereof. The compound material is formed by mixing graphene and a MoS2 nano material in a mass ratio of (1 to 1)-(4 to 1). The preparation method comprises the following steps of: preparing an oxidized graphite nano slice from graphite by a chemical oxidization method; then dissolving molybdate into deionized water so as to form 0.02 to 0.07M of solution; adding L-cysteine serving as a sulfur source and a reduction agent, wherein the mass ratio of the L-cysteine to the molybdate is (5 to 1)-(12 to 1); adding the oxidized graphite nano slice into the solution, and ultrasonically treating so that the oxidized graphite nano slice can be fully dispersed in the hydrothermal reaction solution; transferring the mixture into a hydrothermal reaction kettle and sealing; and synthesizing by a one-step hydrothermal method to obtain the compound nano material of graphene and MoS2, wherein the mass ratio of the graphene nano slice to the MoS2 is (1 to 1)-(4 to 1). The method has the characteristics of mild reaction condition and simple process. The compound nano material of graphene and MoS2 synthesized by the method can be widely used as electrode materials of new energy batteries, high-performance national lubricants, catalyst carriers and the like.

Description

technical field [0001] The invention relates to composite nanomaterials and their preparation, especially graphene and MoS 2 The composite nanomaterial and the preparation method thereof belong to the field of inorganic composite nanomaterial, new energy material and preparation thereof. Background technique [0002] Graphene nanosheets have many unique physical, chemical and mechanical properties due to their unique two-dimensional nanosheet structure, which has important scientific research significance and broad application prospects. The discovery of graphene materials won the Nobel Prize in 2010, which stimulated people's great interest in the research of graphene materials. Graphene nanosheets have extremely high specific surface area, high electrical and thermal conductivity, and super mechanical properties. Recently, the application of graphene nanosheets as micro-nano electronic devices, electrode materials for new energy batteries, solid lubricants and new cataly...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36B82Y30/00B82Y40/00H01M4/139
CPCY02E60/122Y02E60/12Y02E60/10
Inventor 陈卫祥陈涛常焜李辉马琳
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap