Two-dimensional lamellar porous black phosphorus material and preparation method thereof

A two-dimensional layered, black phosphorus technology, used in phosphorus preparation, nanotechnology for materials and surface science, bulk chemical production, etc. problem, to achieve the effect of high yield, low cost and high stability

Active Publication Date: 2017-05-17
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the yield of flaky black phosphorus prepared by mechanical exfoliation is low and time-consuming, which is not suitable for the production of commercial application materials; the existing liquid phase exfoliation method has a high yield but the size is too small, and the organic solvent is difficult to remove; pulsed laser The size of the black phosphorus film obtained by the precipitation method is relatively large, but the product is in an amorphous state

Method used

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  • Two-dimensional lamellar porous black phosphorus material and preparation method thereof
  • Two-dimensional lamellar porous black phosphorus material and preparation method thereof
  • Two-dimensional lamellar porous black phosphorus material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0054] A preparation method of a two-dimensional layered porous black phosphorus material, comprising the following steps:

[0055] Step (1). Di(butyl)methylsulfonium hexafluorophosphate was vacuum-dried at 100°C for 48h;

[0056] Step (2). 10mg block black phosphorus, dried bis(butyl) methylsulfonium hexafluorophosphate 5mg, join in the N-methylpyrrolidone of 40mL by mass ratio in the weight ratio of 100:50 ( NMP), in which the concentration of massive black phosphorus in N-methylpyrrolidone is 0.25mg / mL, and the probe is ultrasonicated for 3 hours with a power of 900W under the sealed condition, and the temperature is controlled at 5°C during the whole process of probe ultrasonication ; Then perform ultrasonication in a water bath with a power of 500W for 3h, and control the temperature at 5°C during the entire process of ultrasonication in a water bath. After standing still overnight, the supernatant was centrifuged at 7000rpm for 10min to collect the precipitate to obtain...

Embodiment 2

[0058] A preparation method of a two-dimensional layered porous black phosphorus material, comprising the following steps:

[0059] Step (1). Di(butyl)methylsulfonium hexafluorophosphate was vacuum-dried at 100°C for 48h;

[0060] Step (2). 10mg block black phosphorus, dried bis(butyl) methylsulfonium hexafluorophosphate 50mg, join in the N-methylpyrrolidone of 2mL by mass ratio in the weight ratio of 100:500 ( NMP), wherein the concentration of massive black phosphorus in N-methylpyrrolidone is 5 mg / mL, and the probe is ultrasonicated for 3 hours with a power of 900 W under sealed conditions, and the temperature is controlled at 5 °C during the entire probe ultrasonic process. ; Then perform ultrasonication in a water bath with a power of 500W for 3h, and control the temperature at 5°C during the entire process of ultrasonication in a water bath. After standing still overnight, the supernatant was centrifuged at 7000rpm for 10min to collect the precipitate to obtain a two-di...

Embodiment 3

[0062] A preparation method of a two-dimensional layered porous black phosphorus material, comprising the following steps:

[0063] Step (1). Di(butyl)methylsulfonium hexafluorophosphate was vacuum-dried at 100°C for 48h;

[0064] Step (2). Add 10mg block black phosphorus and 75mg of dried bis(butyl)methylsulfonium hexafluorophosphate into 0.2mL of N-methylpyrrolidone in a weight ratio of 100:750 by mass (NMP), wherein the concentration of massive black phosphorus in N-methylpyrrolidone is 50 mg / mL, and the probe is ultrasonicated for 3 h with a power of 900 W under a sealed condition, and the temperature is controlled at 5 during the entire probe ultrasonic process. °C; then conduct ultrasonication in a water bath with a power of 500W for 3h, and control the temperature at 5 °C during the entire process of ultrasonication in a water bath. After standing still overnight, the supernatant was centrifuged at 7000rpm for 10min to collect the precipitate to obtain a two-dimensiona...

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Abstract

The invention provides a two-dimensional lamellar porous black phosphorus material. Multiple holes are formed in a lamellar layer of the two-dimensional lamellar porous black phosphorus material, and lateral dimension of the two-dimensional lamellar porous black phosphorus material is 10-100 mu m. The lateral dimension of the prepared two-dimensional lamellar porous black phosphorus material is larger, multiple holes are formed in the surface, the stability is higher, and the two-dimensional lamellar porous black phosphorus material can be widely applied to fields of energy, photoelectric or photo-thermal devices and the like. The invention further provides the two-dimensional lamellar porous black phosphorus material as well as a preparation method and an application thereof.

Description

technical field [0001] The invention belongs to the field of preparation of electrodeless nanometer materials, and in particular relates to a two-dimensional layered porous black phosphorus material and a preparation method thereof. Background technique [0002] Black phosphorus (Black phosphorene) is a new type of direct bandgap two-dimensional material, its bandgap can be adjusted from 0.3eV (bulk state) to 1.5eV (single layer) through its number of layers, it can absorb from visible light to infrared for communication Light with a wide range of wavelengths, coupled with its high carrier mobility (when the thickness of black phosphorus is 10nm, it can be as high as 1000cm 2 ˙v -1 ˙s -1 ) and higher on-off ratio (10 4 ), making it show great potential advantages in the semiconductor field, optoelectronic field, and photothermal field. [0003] Black phosphorus bulk needs to be exfoliated into single-layer, few-layer or multi-layer black phosphorus (ie, phosphorene) to e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/02B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B25/02C01P2004/04C01P2004/20C01P2004/60C01P2006/16Y02P20/54
Inventor 张晗邢晨阳张家宜
Owner SHENZHEN UNIV
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