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A kind of graphene/black phosphorus nanosheet/nitrogen-containing ionic liquid composite airgel and preparation method thereof

A composite aerogel and nanosheet technology, applied in aerogel preparation, graphene, nanocarbon and other directions, can solve the problems of non-recycling and reuse, no research report on black phosphorus aerogel, etc., to improve stability properties, the effect of avoiding degradation

Active Publication Date: 2019-04-26
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most research reports are based on two-dimensional black phosphorus nanosheets or black phosphorus quantum dots, and there is no research report on black phosphorus aerogels.
However, two-dimensional black phosphorus nanosheets and black phosphorus quantum dots mostly exist in the form of powder or solution, which makes these black phosphorus materials unable to be recycled after use.

Method used

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  • A kind of graphene/black phosphorus nanosheet/nitrogen-containing ionic liquid composite airgel and preparation method thereof
  • A kind of graphene/black phosphorus nanosheet/nitrogen-containing ionic liquid composite airgel and preparation method thereof
  • A kind of graphene/black phosphorus nanosheet/nitrogen-containing ionic liquid composite airgel and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0067] A preparation method of graphene / black phosphorus nanosheet / 1-octyl-3-methylimidazolium hexafluorophosphate composite airgel, comprising the following steps:

[0068] Step (1). Prepare the mixed solution of uniform, stable black phosphorus nanosheets / 1-octyl-3-methylimidazolium hexafluorophosphate / N-methylpyrrolidone by solvothermal method, and its specific steps are as follows:

[0069] 1-a): 1-octyl-3-methylimidazolium hexafluorophosphate was vacuum-dried at 110° C. for 48 hours;

[0070] 1-b): Add 25 mg of bulk black phosphorus and 500 mg of dried 1-octyl-3-methylimidazolium hexafluorophosphate into an agate mortar in a mass ratio of 100:2000 for mechanical grinding for 40 Minutes; after grinding, the compound of black phosphorus / nitrogen-containing ionic liquid is moved to a round bottom flask, and the N-methylpyrrolidone (NMP) of 180mL is added to obtain the first mixed solution;

[0071] 1-c): The above-mentioned first mixed solution is subjected to probe ultraso...

Embodiment 2

[0102] A preparation method of graphene / black phosphorus nanosheet / 1-octyl-3-methylimidazolium hexafluorophosphate composite airgel, comprising the following steps:

[0103] Step (1). Prepare the mixed solution of uniform, stable black phosphorus nanosheets / 1-octyl-3-methylimidazolium hexafluorophosphate / N-methylpyrrolidone by solvothermal method, and its specific steps are as follows:

[0104] 1-a): 1-octyl-3-methylimidazolium hexafluorophosphate was vacuum-dried at 110° C. for 48 hours;

[0105] 1-b): 25 mg of bulk black phosphorus and 25 mg of dried 1-octyl-3-methylimidazolium hexafluorophosphate were added to an agate mortar in a mass ratio of 100:100 for mechanical grinding for 40 Minutes; after grinding, the compound of black phosphorus / nitrogen-containing ionic liquid is moved to a round bottom flask, and the N-methylpyrrolidone (NMP) of 180mL is added to obtain the first mixed solution;

[0106] 1-c): The above-mentioned first mixed solution is subjected to probe ultr...

Embodiment 3

[0111] A preparation method of graphene / black phosphorus nanosheet / 1-octyl-3-methylimidazolium hexafluorophosphate composite airgel, comprising the following steps:

[0112] Step (1). Prepare the mixed solution of uniform, stable black phosphorus nanosheets / 1-octyl-3-methylimidazolium hexafluorophosphate / N-methylpyrrolidone by solvothermal method, and its specific steps are as follows:

[0113] 1-a): 1-octyl-3-methylimidazolium hexafluorophosphate was vacuum-dried at 110° C. for 48 hours;

[0114] 1-b): Add 25 mg of bulk black phosphorus and 5,000 mg of dried 1-octyl-3-methylimidazolium hexafluorophosphate into an agate mortar in a mass ratio of 100:20,000 for 40 Minutes; after grinding, the compound of black phosphorus / nitrogen-containing ionic liquid is moved to a round bottom flask, and the N-methylpyrrolidone (NMP) of 180mL is added to obtain the first mixed solution;

[0115] 1-c): The above-mentioned first mixed solution is subjected to probe ultrasonication for 3 hours...

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Abstract

The invention provides a graphene / black phosphorus nano-sheet / nitrogen ion containing liquid composite aerogel which comprises a three-dimensional graphene framework, the black phosphorus nano-sheets and nitrogen-ion-containing liquid, the phosphorus nano-sheets and the nitrogen-ion-containing liquid are loaded on the three-dimensional graphene framework, and the nitrogen-ion-containing liquid wraps the phosphorus nano-sheets. The graphene / black phosphorus nano-sheet / nitrogen ion containing liquid composite aerogel has a three-dimensional porous network structure, high elasticity, high resilience, high conductivity and quite excellent stability, types of black phosphorus products are enriched, black phosphorus application ranges are widened, the composite aerogel is expected to be applied to fields such as energy sources (aluminum-ion batteries, solar cells, lithium-ion batteries and the like), catalysis, water treatment, photo-electricity and optothermal. The invention further provides a preparation method of the composite aerogel.

Description

technical field [0001] The invention relates to the technical field of preparation of inorganic nanomaterials, in particular to a graphene / black phosphorus nanosheet / nitrogen-containing ionic liquid composite airgel and a preparation method thereof. Background technique [0002] Black phosphorus is a new type of two-dimensional material with a direct band gap. Its band gap can be adjusted from 0.3eV (bulk state) to 1.5eV (single layer) through the number of layers, so it can absorb wavelengths ranging from visible light to infrared for communication. light, coupled with its high carrier mobility (up to 1000cm at a thickness of 10nm 2 ˙v -1 ˙s -1 ) and higher on-off ratio (10 4 ), which shows great potential advantages in the fields of semiconductor, optoelectronics and photothermal. [0003] In practical applications, black phosphorus needs to be exfoliated into single-layer, few-layer or multi-layer black phosphorus (ie, phosphorene) to exert its excellent photoelectric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/184C09K11/02C09K11/70B01J13/00
CPCB01J13/0091C01B2204/04C01B2204/32C09K11/025C09K11/70
Inventor 张晗邢晨阳张家宜
Owner SHENZHEN UNIV