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Method for preparing two-dimensional material with atmospheric-pressure plasmas

A normal-pressure plasma, two-dimensional material technology, applied in the field of plasma preparation of two-dimensional materials, can solve problems such as complex conditions, achieve simple operation, novel and unique technical methods, and avoid oxidation effects.

Active Publication Date: 2018-03-09
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the entire preparation process needs to be completed in an argon environment, and the conditions are relatively complicated.

Method used

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  • Method for preparing two-dimensional material with atmospheric-pressure plasmas
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Examples

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Embodiment 1

[0036] A method for preparing a two-dimensional black phosphorus material using atmospheric pressure plasma is to construct a black phosphorus crystal stripping device with a cathode, and use atmospheric pressure micro-plasma technology to strip the black phosphorus crystal, thereby quickly and efficiently preparing a two-dimensional black phosphorus material. Vitamin black phosphorus nanosheet material. In this embodiment, a hollow stainless steel capillary with an inner diameter of 0.2mm and an outer diameter of 1.6mm is used as the anode, black phosphorus crystals are used as the cathode, N-methylpyrrolidone is used as a solution and a DC high-voltage power supply to form a preparation device. Among them, the anode is placed vertically above the solution, the tip of the electrode is 0.1mm away from the liquid surface, and the metal electrode is connected to the positive output of the high voltage power supply; the cathode is made of black phosphorus crystal material, immerse...

Embodiment 2

[0038]A method for preparing two-dimensional black phosphorus materials using atmospheric pressure plasma is to use atmospheric pressure micro-plasma technology to construct a black phosphorus crystal stripping device with a cathode as the cathode to strip black phosphorus crystals, thereby quickly and efficiently preparing two-dimensional black phosphorus materials. Vitamin black phosphorus nanosheet material. In this embodiment, a stainless steel capillary with an inner diameter of 0.4mm and an outer diameter of 2.5mm is used as the anode, black phosphorus crystals are used as the cathode, dimethylformamide is used as a solution and a DC high voltage power supply to form a preparation device. Among them, the anode is placed vertically above the solution, the tip of the electrode is 1.5mm away from the liquid surface, and the metal electrode is connected to the positive output of the high voltage power supply; the cathode is made of black phosphorus crystal material, immersed ...

Embodiment 3

[0042] A method for preparing two-dimensional black phosphorus materials using atmospheric pressure plasma is to use atmospheric pressure micro-plasma technology to construct a black phosphorus crystal stripping device with a cathode as the cathode to strip black phosphorus crystals, thereby quickly and efficiently preparing two-dimensional black phosphorus materials. Vitamin black phosphorus nanosheet material. In this example, a stainless steel capillary with an inner diameter of 0.3mm and an outer diameter of 5.0mm is used as the anode, black phosphorus crystal is used as the cathode, N,N-dimethylformamide is used as the solution and a DC high voltage power supply to form the preparation device. Among them, the anode is placed vertically above the solution, the tip of the electrode is 5.0mm away from the liquid surface, and the metal electrode is connected to the positive output of the high voltage power supply; the cathode is made of black phosphorus crystal material, immer...

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Abstract

The invention relates to a method for preparing two-dimensional material with atmospheric-pressure plasmas. According to the method, a stripping device with a negative electrode being material crystalis constructed on the basis of an atmospheric-pressure plasma technique, and a two-dimensional crystal wafer is obtained by stripping of the material crystal. Compared with other stripping methods, the method has advantages of simple steps, convenience in operation, short time, high efficiency, freeness of utilization of complex expensive equipment and extra chemical agents and freeness of environmental pollution and material surface contamination and is especially applicable to preparation of two-dimensional black phosphorus materials. In addition, the method can be implemented under normal-temperature normal-pressure conditions, the process is easier to control, and industrial application is benefited.

Description

technical field [0001] The invention relates to the field of preparation of two-dimensional nanomaterials, in particular to a method for preparing two-dimensional materials using atmospheric pressure plasma. Background technique [0002] Two-dimensional crystals are planar crystals with a nanometer thickness formed by stacking several monoatomic layers. In recent years, two-dimensional crystal materials have become a new research direction for semiconductor materials due to their superior electrical properties. [0003] Black Phosphorus (BP) is the most stable allotrope of phosphorus at normal temperature and pressure, and is a graphene-like two-dimensional layered material with a natural wrinkled structure. Compared with other two-dimensional materials, black phosphorus has many unique advantages. Existing data show that black phosphorus is a direct bandgap semiconductor, and its bandgap (0.3-2.0eV) can be adjusted in a wide range through the number of layers to achieve li...

Claims

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Application Information

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IPC IPC(8): C01B25/00C01B32/19B82Y40/00
CPCB82Y40/00C01B25/003C01B2204/32C01P2002/82C01P2004/04
Inventor 喻学锋高明黄逸凡黄浩刘丹妮王佳宏
Owner SHENZHEN INST OF ADVANCED TECH
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