A kind of low-temperature batch synthesis method of black phosphorus nanosheet material

A technology for nanosheets and black phosphorus is applied in the field of low-temperature batch synthesis of black phosphorus nanosheet materials, which can solve the problems of easy oxidation, time-consuming and high cost of products, and achieve the effects of simple and convenient preparation method, stable chemical properties and increased yield.

Inactive Publication Date: 2019-03-08
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the technical problems that the product is easily oxidized, time-consuming and costly when preparing black phosphorus nanosheets in the prior art, and provides a method for batch-synthesizing black phosphorus nanosheets at low temperature

Method used

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  • A kind of low-temperature batch synthesis method of black phosphorus nanosheet material
  • A kind of low-temperature batch synthesis method of black phosphorus nanosheet material
  • A kind of low-temperature batch synthesis method of black phosphorus nanosheet material

Examples

Experimental program
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Effect test

Embodiment 1

[0017] (1) Weigh 3g of white phosphorus and add it into a reaction kettle containing 70mL of ethylenediamine, and magnetically stir to completely dissolve the white phosphorus;

[0018] (2) Tighten the lid of the reaction kettle, place it in an oven and heat it to 140°C, and keep the temperature constant for 12 hours;

[0019] (3) After the reaction kettle is spontaneously cooled to room temperature, the obtained product is centrifuged and washed with benzene, ethanol and deionized water;

[0020] (4) The obtained black precipitate was placed in a vacuum drying oven, and dried at room temperature for 12 hours to obtain the black phosphorus nanosheet material.

Embodiment 2

[0022] Weigh 2g of white phosphorus and add it into a reaction kettle filled with 60mL of ethylenediamine, and magnetically stir to completely dissolve the white phosphorus. The rest of the conditions are the same as in Example 1, and the black phosphorus nanosheet material is obtained after testing.

Embodiment 3

[0024] Weigh 3g of white phosphorus and add it into a reaction kettle containing 70mL of ethylenediamine, stir magnetically to completely dissolve the white phosphorus; tighten the lid of the reaction kettle, and place it in an oven to heat to 120°C and keep the temperature constant for 12 hours; The conditions are the same as in Example 1, and the black phosphorus nanosheet material is obtained after detection.

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Abstract

The invention discloses a method used for direct, liquid phase, low temperature synthesis of black phosphorus nano-sheet, and belongs to the technical field of black phosphorus two-dimensional material. According to the method, solvothermal method is adopted, and white phosphorus and ethene diamine are delivered into a reaction vessel; after complete dissolving of white phosphorus, the reaction vessel is sealed, and is heated to 60 to 140 DEG C in a baking oven, and the temperature is maintained for 12h, so that pure phase black phosphorus nano-sheet is obtained after reaction. Operation of the method is simple; cost is low; the method is convenient for industrialized large scale production; the obtained black phosphorus nano-sheet is high in purity; yield is as high as 70%; and the method can be widely applied in fields such as photoelectric devices and catalysis.

Description

technical field [0001] The invention belongs to the technical field of black phosphorus two-dimensional materials, and relates to a method for synthesizing black phosphorus nanosheet materials in batches at low temperature. Background technique [0002] Black phosphorus with an orthorhombic structure, whose unit cell is an interlinked six-membered ring, is the most stable isotrope of phosphorus at normal temperature and pressure. Black phosphorus has a thickness-dependent optical bandgap, which is adjustable in the range of 0.5-2eV, and exhibits the advantages of very high carrier mobility. Therefore, black phosphorus nanosheets are extremely useful in optoelectronic devices, energy, biomedicine, etc. It has great application potential, and its performance far exceeds that of graphene materials, and is considered to be a very promising two-dimensional material. However, the synthesis of black phosphorus nanosheets is very difficult. At present, mechanical or liquid phase e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/02
CPCC01B25/02C01P2002/72C01P2002/82C01P2004/01C01P2004/04C01P2004/20C01P2004/51C01P2004/62C01P2004/64
Inventor 田跃田彬田碧凝
Owner TAIYUAN UNIV OF TECH
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