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Method for preparing high-stability nanometer black phosphorus/three-dimensional graphene composite materials

A composite material and graphene technology, applied in the field of composite materials, can solve the problems of high energy consumption, complex plasma sintering process, unfavorable industrial production, etc., and achieve large active area, high conductivity and ion transmission performance, and low cost Effect

Active Publication Date: 2018-09-14
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the composite material obtained by this method, black phosphorene and graphene only interact through van der Waals force, which cannot fundamentally solve the defect that nano black phosphorus is easy to oxidize; the second is to mix black phosphorene and graphene oxide, and then pass through the plasma Reduction of graphene oxide through bulk sintering process to obtain black phosphorene / graphene composites
Although the composite material black phosphorene and graphene oxide obtained by this method has a strong bond, the plasma sintering process is relatively complicated and consumes high energy, which is not conducive to industrial production.
And the nano black phosphorus / graphene composite materials reported so far are all two-dimensional structures

Method used

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  • Method for preparing high-stability nanometer black phosphorus/three-dimensional graphene composite materials
  • Method for preparing high-stability nanometer black phosphorus/three-dimensional graphene composite materials
  • Method for preparing high-stability nanometer black phosphorus/three-dimensional graphene composite materials

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Effect test

Embodiment 1

[0024] Embodiment 1: a kind of preparation method of highly stable nano black phosphorus / three-dimensional graphene composite material, concrete steps are as follows:

[0025] (1) Under the condition of a temperature of 15°C and an inert gas (argon) atmosphere, the nano-black phosphorus dispersion (the nano-black phosphorus dispersion is nano-black phosphorene / water dispersion) and the graphene oxide dispersion (graphite oxide ene dispersion is graphene oxide / water dispersion) and mixed with ultrasonic treatment to obtain dispersion A; wherein the concentration of nano-black phosphorus dispersion (nano-black phosphorene / water dispersion) is 1 mg / mL, and the graphene oxide dispersion The concentration of (graphene oxide / water dispersion) is 4mg / mL, the mass ratio of nano black phosphorus to graphene oxide is 1:4; ultrasonic treatment is ultrasonic pretreatment with ultrasonic cell washer, and the power of ultrasonic cell washer 200W, the processing time of the ultrasonic cell c...

Embodiment 2

[0032] Embodiment 2: a kind of preparation method of highly stable nano black phosphorus / three-dimensional graphene composite material, concrete steps are as follows:

[0033] (1) Under the condition of a temperature of 25°C and an inert gas (nitrogen) atmosphere, the nano-black phosphorus dispersion (the nano-black phosphorus dispersion is a black phosphorus quantum dot / N-methylpyrrolidone dispersion) and the graphene oxide dispersion (The graphene oxide dispersion is graphene oxide / N-methylpyrrolidone dispersion) mixed and ultrasonically treated to obtain dispersion A; wherein the nano black phosphorus dispersion (black phosphorus quantum dots / N-methylpyrrolidone dispersion) The concentration is 1mg / mL, the concentration of graphene oxide dispersion (graphene oxide / N-methylpyrrolidone dispersion) is 4mg / mL, the mass ratio of nano black phosphorus to graphene oxide is 1:1; Ultrasonic pretreatment is performed by the cell pulverizer, the cell pulverizer is 1500W, and the ultra...

Embodiment 3

[0036] Embodiment 3: a kind of preparation method of highly stable nano black phosphorus / three-dimensional graphene composite material, concrete steps are as follows:

[0037](1) Under the condition of a temperature of 25°C and an inert gas (nitrogen) atmosphere, the nano-black phosphorus dispersion (the nano-black phosphorus dispersion is a black phosphorus quantum dot / 1-butyl-trimethylimidazolium dicyanamide dispersion ) mixed with graphene oxide dispersion (graphene oxide dispersion is graphene oxide 1-butyl-trimethylimidazolium dicyanamide dispersion), and ultrasonically treated to obtain dispersion A; wherein nano-black phosphorus dispersion (black Phosphorus quantum dots / 1-butyl-trimethylimidazolium dicyanamide dispersion) at a concentration of 1 mg / mL, graphene oxide dispersion (graphene oxide / 1-butyl-trimethylimidazolium dicyanamide dispersion ) concentration is 4mg / mL, the mass ratio of nanometer black phosphorus to graphene oxide is 1:3; the ultrasonic treatment is u...

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Abstract

The invention relates to a method for preparing high-stability nanometer black phosphorus / three-dimensional graphene composite materials, and belongs to the technical field of composite materials. Themethod includes mixing nanometer black phosphorus dispersion liquid and graphene oxide dispersion liquid with each other under inert gas atmosphere conditions at the temperatures of 5-30 DEG C and carrying out ultrasonic treatment to obtain dispersion liquid A; treating the dispersion liquid A by the aid of liquid nitrogen under inert gas atmosphere conditions and carrying out freeze drying to obtain the high-stability nanometer black phosphorus / three-dimensional graphene composite materials. The method has the advantages that graphene oxide can be reduced under ultrasonic conditions under catalytic effects of nanometer black phosphorus to obtain graphene, and excellent bonding effects can be realized by black phosphorene and the graphene in reduction procedures.

Description

technical field [0001] The invention relates to a preparation method of a highly stable nanometer black phosphorus / three-dimensional graphene composite material, belonging to the technical field of composite materials. Background technique [0002] Black phosphorus is a new two-dimensional layered material that has emerged in recent years, similar to graphite. Due to the unique crystal structure and energy band structure of black phosphorus, it has good application prospects in the fields of energy storage and catalysis. Compared with nano-sized black phosphorus, bulk black phosphorus has defects such as slow ion and electron conduction, and small reactive area. black phosphorus quantum dots). Although nano-black phosphorus has the unique advantages of nano-materials, there are fundamental obstacles in practical applications: phosphorus-based materials have poor conductivity and are easily oxidized in the surrounding environment. Therefore, it is necessary to combine nano...

Claims

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Application Information

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IPC IPC(8): C01B25/02C01B32/184
CPCC01B25/02C01B32/184
Inventor 廉培超刘红红梅毅杨保佳
Owner KUNMING UNIV OF SCI & TECH
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