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Graphene nano sheet and SnS2 composite nano material and synthesis method thereof

A technology of graphene nanosheets and composite nanomaterials, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as composite nanomaterials that have not been reported publicly, and achieve enhanced electrochemical Performance and catalytic performance, super mechanical properties, enhanced performance improvement effect

Inactive Publication Date: 2011-08-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, using L-cysteine ​​to synthesize graphene nanosheets and SnS 2 Research on composite nanomaterials has not been publicly reported

Method used

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  • Graphene nano sheet and SnS2 composite nano material and synthesis method thereof
  • Graphene nano sheet and SnS2 composite nano material and synthesis method thereof
  • Graphene nano sheet and SnS2 composite nano material and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Graphene nanosheets and SnS 2 Its preparation method of the composite nanomaterial:

[0024] 1) Preparation of graphite oxide nanosheets: Disperse 4.0mmol (0.048g) 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;

[0025] 2) Dissolve 1.94g (16mmol) L-cysteine ​​in 160ml deionized water, then add 0.70g (2mmol) tin tetrachloride (SnCl 4 ·5H 2 O), and stirred to make it dissolve, L-cysteine ​​and SnCl in the mixed solution 4 The molar ratio is 8:1. Then the 1st) step is added in this solution with the prepared graphite oxide nanoplate...

Embodiment 2

[0027] Example 2: Graphene nanosheets and SnS 2 Its preparation method of the composite nanomaterial:

[0028] 1) Preparation of graphite oxide nanosheets: Disperse 2.0mmol (0.024g) 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 ℃, add .50ml of deionized water, stir for 25 minutes, add 12ml of 30% H 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;

[0029] 2) Dissolve 1.22g (10mmol) L-cysteine ​​in 150ml deionized water, then add 0.70g (2mmol) tin tetrachloride (SnCl 4 ·5H 2 O), and stirred to make it dissolve, L-cysteine ​​and SnCl in the mixed solution 4 The mol ratio of 2.0mmol (0.024g) will be 5: 1, then the graphite oxide nanosheets prepared by the graphite of 2.0mmo...

Embodiment 3

[0030] Example 3: Graphene nanosheets and SnS 2 The preparation method of the composite nanomaterial

[0031] 1) Preparation of graphite oxide nanosheets: Disperse 4.5mmol (0.054g) 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 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;

[0032] 2) Dissolve 1.454g (12mmol) L-cysteine ​​in 150ml deionized water, then add 0.52g (1.5mmol) tin tetrachloride (SnCl 4 ·5H 2 O), and stirred to make it dissolve, L-cysteine ​​and SnCl in the mixed solution 4 The mol ratio is 8: 1, then the graphite oxide nanosheets prepared by the graphite of 1...

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Abstract

The invention discloses a graphene nano sheet and SnS2 composite nano material and a synthesis method thereof. The composite material is characterized by being formed by compounding a graphene nano sheet and a SnS2 nano material, wherein the substance amount ratio of the graphene nano sheet to the SnS2 nano material is 1:1-4:1. The preparation method comprises the following steps of: preparing a graphite oxide nano sheet from graphite by using a chemical oxidation method, then dissolving L-cysteine into deionized water, adding stannic chloride, and dissolving the stannic chloride with full stirring, wherein the molar ratio of the L-cysteine to the stannic chloride in the solution is 6:1-12:1; and adding the graphite oxide nano sheet into the solution, performing ultrasonic treatment so that the graphite oxide nano sheet is fully dispersed in the hydrothermal reaction solution, and synthesizing the graphene nano sheet and SnS2 composite nano material by a one-step hydrothermal method, wherein the mass ratio of the graphene nano sheet to the SnS2 nano material in the composite material is 1:1-4:1. The method has the characteristics of mild reaction condition and simple process. The synthesized graphene nano sheet and SnS2 composite nano material serving as an electrode material of a new energy battery or serving as other materials has wide application.

Description

technical field [0001] The invention relates to composite nanomaterials and their preparation, in particular to graphene nanosheets and SnS 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 lubrican...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/139B82Y30/00B82Y40/00
CPCY02E60/122Y02E60/12Y02E60/10
Inventor 陈涛陈卫祥常焜马琳李辉
Owner ZHEJIANG UNIV
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