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

A technology of composite airgel and quantum dots, which is applied in the direction of airgel preparation, graphene, chemical instruments and methods, etc., can solve the problems that cannot be recycled and reused, and there are no research reports on black phosphorus aerogels. Effect of improving stability and avoiding degradation

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

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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] A preparation method of graphene / black phosphorus quantum dot / 1-octyl-3-methylimidazolium hexafluorophosphate composite airgel, comprising the following steps:

[0066] Step (1). Prepare the mixed solution of uniform, stable black phosphorus quantum dots / 1-octyl-3-methylimidazolium hexafluorophosphate / N-methylpyrrolidone by solvothermal method, and its specific steps are as follows:

[0067] 1-a): 1-octyl-3-methylimidazolium hexafluorophosphate was vacuum-dried at 110° C. for 48 hours;

[0068] 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;

[0069] 1-c): the above-mentioned first mixed solution was deoxygenated by argon...

Embodiment 2

[0101] A preparation method of graphene / black phosphorus quantum dot / 1-octyl-3-methylimidazolium hexafluorophosphate composite airgel, comprising the following steps:

[0102] Step (1). Prepare the mixed solution of uniform, stable black phosphorus quantum dots / 1-octyl-3-methylimidazolium hexafluorophosphate / N-methylpyrrolidone by solvothermal method, and its specific steps are as follows:

[0103] 1-a): 1-octyl-3-methylimidazolium hexafluorophosphate was vacuum-dried at 110° C. for 48 hours;

[0104] 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;

[0105] 1-c): the above-mentioned first mixed solution was deoxygenated by ar...

Embodiment 3

[0110] A preparation method of graphene / black phosphorus quantum dot / 1-octyl-3-methylimidazolium hexafluorophosphate composite airgel, comprising the following steps:

[0111] Step (1). Prepare the mixed solution of uniform, stable black phosphorus quantum dots / 1-octyl-3-methylimidazolium hexafluorophosphate / N-methylpyrrolidone by solvothermal method, and its specific steps are as follows:

[0112] 1-a): 1-octyl-3-methylimidazolium hexafluorophosphate was vacuum-dried at 110° C. for 48 hours;

[0113] 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;

[0114] 1-c): the above-mentioned first mixed solution was deoxygenated by argon bubbling for 40 min...

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Abstract

The invention provides graphene / black phosphorus quantum dot / nitrogen ion-containing liquid composite aerogel comprising a three-dimensional graphene framework, and black phosphorus quantum dots and nitrogen ion-containing liquid which are loaded on the three-dimensional graphene framework, wherein the black phosphorus quantum dots are wrapped with the nitrogen ion-containing liquid. The graphene / black phosphorus quantum dot / nitrogen ion-containing liquid composite aerogel is in a three-dimensional multihole net-shaped structure, is high in elasticity, resilience and conductivity, and very excellent in stability, enriches black phosphorus product forms, expands application range of black phosphorus and is expected to be applied in the fields of energy (aluminium ion batteries, solar cells, lithium ion batteries and the like), catalyzing, water treatment, photoelectricity, optothermal and the like. The invention also provides a preparation method of the graphene / black phosphorus quantum dot / nitrogen ion-containing liquid 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 quantum dot / 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 photoelectr...

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
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