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Black phosphorene as well as preparation method and application thereof

A technology of black phosphorene and black phosphorus, which is applied in the field of black phosphorene and its preparation, can solve the problems of difficult industrial production, difficult control of crystal size, and low output, and achieve the effects of short time, anti-oxidation, and high output

Inactive Publication Date: 2018-08-14
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current method for preparing black phosphorene has relatively harsh experimental conditions, low yield, and difficult control of the crystal size prepared, which is difficult to be used in industrial production.

Method used

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  • Black phosphorene as well as preparation method and application thereof
  • Black phosphorene as well as preparation method and application thereof
  • Black phosphorene as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of black phosphorene of the present invention includes the following steps: respectively weighing 5 mg of analytically pure block black phosphorous; placing the weighed sample in a mortar and grinding for 3 minutes, and this process is carried out in a glove box. The ground black phosphorus is dissolved in 15ml of N-methylpyrrolidone. The concentration ratio of the sample to N-methylpyrrolidone is about 1:3. It is placed in the ultrasonic cell crusher. The power of the ultrasonic cell crusher is set to 500W. , The crushing time is 2s, the temperature is 10℃, the working interval is 3s, and the working time is 20min. Start ultrasound. This process should be carried out in the ice field; centrifuge the obtained solution, where the centrifuge speed is 7000r / min, The centrifugation time is 20 minutes and the temperature is 12 degrees; take the supernatant after centrifugation, continue the centrifugation of the obtained supernatant, and continue centrifug...

Embodiment 2

[0034] A preparation method of black phosphorene of the present invention includes the following steps: respectively weighing 4 mg of analytically pure block black phosphorous; placing the weighed sample in a mortar and grinding for 4 minutes, and this process is carried out in a glove box. The ground black phosphorus is dissolved in 14ml of N-methylpyrrolidone, and the concentration ratio of the sample to N-methylpyrrolidone is about 1:3.5. It is placed in the ultrasonic cell crusher, and the power of the ultrasonic cell crusher is 600W. The crushing time is 2s, the temperature is 11℃, the working interval is 3s, and the working time is 25min. Start ultrasound. This process should be carried out in the ice field. Centrifuge the obtained solution, where the centrifuge speed is 7500r / min, The centrifugation time is 20 minutes and the temperature is 12 degrees; take the supernatant after centrifugation, continue the centrifugation of the obtained supernatant, and continue centrifu...

Embodiment 3

[0037] A method for preparing black phosphorene of the present invention includes the following steps: respectively weighing 5 mg of analytically pure block black phosphorous; placing the weighed sample in a mortar and grinding for 5 minutes, and this process is carried out in a glove box. The ground black phosphorus is dissolved in 20ml of N-methylpyrrolidone, and the concentration ratio of the sample to N-methylpyrrolidone is about 1:4. It is placed in the ultrasonic cell crusher, and the power of the ultrasonic cell crusher is 700W. The crushing time is 2s, the temperature is 12℃, the working interval is 3s, and the working time is 20min. Start ultrasound. This process should be carried out in the ice field. Centrifuge the obtained solution, where the centrifuge speed is 8000r / min, The centrifugation time is 20 minutes and the temperature is 12 degrees; take the supernatant after centrifugation, continue centrifuging the supernatant obtained, and continue centrifuging the sup...

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Abstract

The invention discloses a black phosphorene as well as a preparation method and application thereof. The preparation method comprises the following steps: after the black phosphorene is weighed and grinded, putting in N-methyl pyrrolidone solvent; under an ice bath condition, smashing in an ultrasonic wave cell pulverizer; carrying out centrifugation on obtained solution; and taking supernate to obtain the black phosphorene. The black phosphorene nanosheet prepared with the preparation method of the invention can stably exist under an atmospheric environment. A black phosphorus block is dippedin the N-methyl pyrrolidone solvent, bonds among black phosphorus (nanometer lamellar body) layers are beaten by ultrasonic wave to enable the bonds to be broken, a lamellar structure is loosened andseparated, and a centrifuge is used to separate the lamellar structure to obtain a lamellar nanometer structure. The method is simple and easy in implementation, the centrifuge can carry out filtering according to different sizes to obtain high-quality nanometer slices with different thickness, controllability is higher, and the volume production of the black phosphorus nanometer sheet can be realized. An electrochemistry performance test proves that a polymer solar cell assembled by the black phosphorene synthesized with the method has high electrochemical performance.

Description

Technical field [0001] The invention relates to the field of preparation of black phosphorene, in particular to a black phosphorene and a preparation method and application thereof. Background technique [0002] As a new type of two-dimensional material, black phosphorus has received extensive attention from scientists due to its excellent electrical and optical properties. Common two-dimensional materials such as graphene exhibit excellent characteristics in many fields and have good application prospects. However, the absence of a band gap between the valence band and conduction band of graphene makes its application in optoelectronic devices limited. [0003] Black phosphorus is a kind of wavy layered crystal structure similar to graphite. The atomic layers are combined by van der Waals force and can be easily exfoliated into single-layer or few-layer nano-sheets. Black phosphorene is a natural P-type semiconductor, which has a direct band gap, and no matter how many layers are...

Claims

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Application Information

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IPC IPC(8): C01B25/00H01L51/46B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B25/00H10K2102/00Y02E10/549
Inventor 姜倩倩李洁郎鹏袁楠楠张晓琳鲍丽艳汪永越刘情唐建国
Owner QINGDAO UNIV
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