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Method for stabilizing nanometer black phosphorus

A nano and black phosphorus technology, applied in chemical instruments and methods, phosphorus, phosphorus compounds, etc., can solve the problem that nano black phosphorus is easy to be oxidized, and achieve the effect of solving structural instability and good stability

Inactive Publication Date: 2018-08-10
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the instability problem of nano black phosphorus, the object of the present invention is to provide a method for stabilizing nano black phosphorus, the prepared nano black phosphorus / MXene composite material has good stability, and solves the problem of single nano black phosphorus The problem of being easily oxidized, the preparation method is simple to operate, the conditions are mild, green and environmentally friendly, and the cost is low

Method used

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  • Method for stabilizing nanometer black phosphorus
  • Method for stabilizing nanometer black phosphorus
  • Method for stabilizing nanometer black phosphorus

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Embodiment 1

[0023] A method for stabilizing nano black phosphorus, the concrete steps are as follows:

[0024] (1) According to Zhang C, Anasori B, Seral‐Ascaso A, et al. Transparent, Flexible, and Conductive 2D Titanium Carbide (MXene) Films with High VolumetricCapacitance[J]. Advanced Materials, 2017, 29(36) to prepare Ti 3 C 2 , and put Ti 3 C 2 Freeze-dried to obtain Ti 3 C 2 Powder, the specific steps are as follows: under the protection of argon throughout the whole process, first fill the PTFE beaker with argon, then pour 20mL of 8mol / L HCl into it, and then weigh 1g of LiF and Ti 3 AlC 2 (Changchun Nihao Micro-Nano Technology Co., Ltd.) The powder is slowly poured in one by one, stirring with a polytetrafluoro rod for 10 minutes during the period, after sealing the bottle mouth, put it in a magnetic stirrer at 35°C for 72 hours, and then use Deionized water is used for centrifugal washing, followed by suction filtration for separation, and then vacuum drying. The dried powde...

Embodiment 2

[0028] A method for stabilizing nano black phosphorus, the concrete steps are as follows:

[0029] (1) Referring to Zhang C, Anasori B, Seral‐Ascaso A, et al. Transparent, Flexible, and Conductive 2D Titanium Carbide (MXene) Films with High Volumetric Capacitance[J]. Advanced Materials, 2017, 29(36) Ti 2 Preparation of AlC into Ti 2 C water dispersion, which can be freeze-dried to obtain Ti 2 C powder;

[0030] (2) Strip the black phosphorus with an ultrasonic cleaning machine to obtain nano-black phosphorus, and then dry it to obtain nano-black phosphorus powder. Under the protection of nitrogen, the Ti prepared in step (1) 2 C powder and nano black phosphorus powder are mixed according to the mass ratio of 6:1, and the mixture is added to the beaker of dimethyl sulfoxide according to the ratio of mass volume ratio of the mixture to dimethyl sulfoxide of 1:60 (g:mL) In the process, seal the mouth of the beaker after passing nitrogen for 10 minutes, mix with an ultrasonic ...

Embodiment 3

[0032] A method for stabilizing nano black phosphorus, the concrete steps are as follows:

[0033] (1) Will the market buy Mo 2 C prepared Mo 2 C water dispersion, which can be freeze-dried to obtain Mo 2 C powder;

[0034] (2) Ultrasonically strip the black phosphorus with an ultrasonic cleaning machine to obtain nano-black phosphorus, and then dry it to obtain nano-black phosphorus powder. Under the protection of argon, the Mo prepared in step (1) 2 C powder and nano black phosphorus powder are mixed according to the mass ratio of 1:6, and the mass volume ratio of the mixture to 1-ethyl-3-methylimidazole-hexafluorophosphate is 1:100 (g:mL). Add the mixture into the beaker of 1-ethyl-3-methylimidazole-hexafluorophosphate, seal the mouth of the beaker after passing argon gas for 10 minutes, and mix it in an ultrasonic cleaning machine at a temperature of 20°C for 120 minutes, and then perform centrifugation , during the centrifugation process, the whole process is protecte...

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Abstract

The invention discloses a method for stabilizing nanometer black phosphorous. The method comprises the following steps: under inert gas shielding, mixing MXene powder and nanometer black phosphorous powder in the mass ratio of (1: 6) to (6: 1), adding the mixture into a solvent for blending, then carrying out separation, and drying the separated materials so as to obtain a nanometer black phosphorous / MXene composite material. Aiming at the disadvantage that the nanometer black phosphorous is easy to oxidize and unstable in structure, the problem can be solved by compounding the nanometer blackphosphorous and MXene, the nanometer black phosphorous and the MXene are presented in a coordination bond (P-Ti) manner, and the single nanometer black phosphorous is stabilized preferably; the method disclosed by the invention is simple in operation, mild in preparation condition, green, environmentally-friendly and low in cost, and the obtained high-stability nanometer black phosphorous can bewidely applied to the fields of energy storages, photoelectrocatalysis, flame retardance and the like.

Description

technical field [0001] The invention specifically relates to a method for stabilizing nanometer black phosphorus, and belongs to the technical field of composite material preparation. Background technique [0002] Nano black phosphorus is a new type of two-dimensional layered material, black phosphorus with single atomic layer or several atomic layers, because of its adjustable band gap, high ion mobility, high specific capacity and large specific Surface area and other characteristics make it have good application prospects in the fields of photoelectrocatalysis, field effect transistors and energy storage, but its structure is unstable and easily oxidized (PxOy). At present, the methods that can stabilize nano black phosphorus mainly include coating method and composite method. The coating method mainly uses Al 2 o 3 or graphene to stabilize nano black phosphorus, but this is only a physical process, which cannot stabilize nano black phosphorus well. At the same time, ...

Claims

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Application Information

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IPC IPC(8): C01B25/00C01B32/921C01B32/949
CPCC01B25/006C01B32/921C01B32/949C01P2002/70C01P2002/72C01P2002/82C01P2002/84Y02P20/54
Inventor 廉培超李华梅毅汤永威陈继才
Owner KUNMING UNIV OF SCI & TECH
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