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A kind of preparation method of biomimetic ternary system graphene-black phosphorus nanocomposite film

A composite material film and nanocomposite material technology, which is applied in the field of bionic ternary system graphene-black phosphorus nanocomposite material film preparation, can solve the problem of no relevant reports on mechanical properties, and achieve the effect of improving mechanical strength

Active Publication Date: 2020-08-04
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above patents and papers only discuss black phosphorus as an active material for electrical energy storage and photoreaction, and there is no relevant report on the mechanical properties of the nanocomposite film constructed by reduced graphene oxide and black phosphorus.

Method used

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  • A kind of preparation method of biomimetic ternary system graphene-black phosphorus nanocomposite film
  • A kind of preparation method of biomimetic ternary system graphene-black phosphorus nanocomposite film
  • A kind of preparation method of biomimetic ternary system graphene-black phosphorus nanocomposite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Measure 3.476mL of graphene oxide homogeneous dispersion (density is 4.1mg mL -1 ), add 7.853mL of distilled water, stir for 10min, and then ultrasonically disperse for 10min, a brown transparent solution. 7.5mL monolayer black phosphorus nanosheet solution (density 0.1mg mL -1 ) was added dropwise into the uniformly dispersed graphene oxide solution, and the stirring was continued to fully react for 12 hours. Vacuum filter the above reaction solution for 18-24 hours to obtain the imitation shell oxygen GO-BP-III nanocomposite material. Since there are fewer black phosphorus nanosheets in the suction filtration process, the graphene oxide sheets are oriented in an orderly manner under the action of water flow, and due to the formation of P-O-C covalent bonds between black phosphorus and graphene oxide, the black phosphorus nanosheets are arranged in an orderly manner. Interfacial chemistry is not fully sufficient to occur. Then, the graphene oxide-black phosphorus na...

Embodiment 2

[0057] Measure 3.329mL of graphene oxide homogeneous dispersion (density is 4.1mg mL -1 ), adding 2 mL of distilled water, stirring for 10 min, and then ultrasonically dispersing for 10 min, a brown transparent solution was obtained. 13.5mL monolayer black phosphorus nanosheet solution (density 0.1mgmL -1 ) was added dropwise into the uniformly dispersed graphene oxide solution, and the stirring was continued to fully react for 12 hours. Vacuum filter the above reaction solution for 18-24 hours to obtain the imitation shell oxygen GO-BP-III nanocomposite material. Since there are fewer black phosphorus nanosheets in the suction filtration process, the graphene oxide sheets are oriented in an orderly manner under the action of water flow, and due to the formation of P-O-C covalent bonds between black phosphorus and graphene oxide, the black phosphorus nanosheets are arranged in an orderly manner. Interfacial chemistry is completely sufficient. Then, the graphene oxide-black ...

Embodiment 3

[0059] Measure 3.329mL of graphene oxide homogeneous dispersion (density is 4.1mg mL -1 ), adding 2 mL of distilled water, stirring for 10 min, and then ultrasonically dispersing for 10 min, a brown transparent solution was obtained. 13.5mL monolayer black phosphorus nanosheet solution (density 0.1mgmL -1 ) was added dropwise into the uniformly dispersed graphene oxide solution, and the stirring was continued to fully react for 12 hours. Vacuum filter the above reaction solution for 18-24 hours to obtain the imitation shell oxygen GO-BP-III nanocomposite material. Since there are fewer black phosphorus nanosheets in the suction filtration process, the graphene oxide sheets are oriented in an orderly manner under the action of water flow, and due to the formation of P-O-C covalent bonds between black phosphorus and graphene oxide, the black phosphorus nanosheets are arranged in an orderly manner. Interfacial chemistry is completely sufficient. The prepared GO-BP-III graphene...

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Abstract

The invention relates to a method for preparing a biomimetic ternary graphene-black phosphorus nanocomposite film. The method is characterized in that by adopting graphene oxide, black phosphorus (BP)nanosheets and 1-aminopyrene (AP)-suberic acid bis(N-hydroxysuccinimide eater) (DSS) molecules, a super-tough ternary graphene-based nanocomposite is biomimetically constructed through P-O-C covalentbonds formed between the graphene oxide and the black phosphorus nanosheets, the lubrication between black phosphorus nanosheet layers and the synergistic effect of pi-pi conjugation between the graphene oxide and the AP-DSS; the fracture toughness of the composite is up to 51.8MJ m<-3>, which is 29 times that of a natural shell; the BP ternary graphene-based nanocomposite maintains excellent chemical stability; the fracture toughness of the nanomaterial film exposed to air for a long time can be maintained above 95%; and therefore, the super-tough graphene-based nanocomposite film constructed by a biomimetic strategy has broad application prospects in the fields of aerospace, wearable flexible devices and the like.

Description

technical field [0001] The invention relates to a method for preparing a bionic ternary system graphene-black phosphorus nanocomposite film, belonging to the field of nanocomposite material preparation. Background technique [0002] With the rapid development of flexible devices such as foldable sensors, easy-to-carry batteries, touchable bendable screens, and rollable supercapacitors, there is an urgent need for a super-tough material to meet this flexible demand. Graphene is often used as a 2D material in flexible electrical devices and aerospace fields due to its unique electrical, mechanical properties and chemical stability. In addition, graphene is often used as a toughening component in materials, which improves the mechanical properties (tensile strength, fracture toughness) of composite materials to a certain extent, and expands the application of graphene-based composite materials in related fields. application technology scenarios. However, the fracture toughnes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B30/00C04B41/62
CPCC04B30/00C04B41/009C04B41/46C04B41/62C04B2111/80C04B2111/94C04B2201/50C04B14/024C04B14/36C04B41/4539
Inventor 程群峰周天柱刘笑辰
Owner BEIHANG UNIV