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A method for preparing phosphorene-nitrogen-doped carbon composite material

A technology for nitrogen-doped carbon and composite materials, which is applied in the fields of phosphorus compounds, chemical instruments and methods, carbon preparation/purification, etc. There is no good treatment method, the specific surface area of ​​the phosphorene material is small, etc., to achieve good electrical conductivity, good electrical conductivity, and good product quality.

Active Publication Date: 2019-05-28
北京磷玺科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the prepared phosphorene material has a small specific surface area and weak mechanical properties. In addition, there is no good treatment method for the layering phenomenon of phosphorene and the disadvantages of being easily oxidized and corroded, and there is no phosphorene-nitrogen Doped carbon composite material and its synthesis method

Method used

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preparation example Construction

[0018] The method for preparing the phosphorene-nitrogen-doped carbon composite material provided by the present invention is described in detail below.

[0019] A method for preparing phosphorene-nitrogen-doped carbon composite material, comprising the following steps:

[0020] Step A, putting phosphorene and nitrogen-containing organic matter together in the solution and uniformly mixing, the amount of phosphorene accounting for 5%-95% of the total mass of phosphorene and nitrogen-containing organic matter, so as to obtain a uniformly dispersed concentration of 0.1-100g / L suspension. Wherein, the nitrogen-containing organic matter is aniline, pyrrole, melamine, diethylamine, trimethylamine, triethylamine, urea, pyridine, pyrimidine, benzamide, p-aminobenzaldehyde, o-aminobenzaldehyde, m-aminobenzaldehyde at least one of the Described solution is water, methanol, ethanol, propanol, acetone, THF, carbon tetrachloride, acetonitrile, ether, sherwood oil, pentane, hexane, carbo...

Embodiment 1

[0026] A method for preparing phosphorene-nitrogen-doped carbon composite material, comprising the following steps:

[0027] In step a1, 1 g of phosphorene and 9 g of aniline were placed in water and mixed uniformly to obtain a uniformly dispersed suspension with a concentration of 0.15 g / L.

[0028] Step b1, adding 0.08g of ferric chloride to the suspension, and reacting for 0.2h, then performing solid-liquid separation on the reaction product, and vacuum-drying the solid obtained by the solid-liquid separation at 40°C to constant weight, thereby obtaining a composite precursors.

[0029] Step c1, place the composite precursor in a high-temperature furnace filled with nitrogen for calcination, the calcination temperature is 1100°C, the holding time is 2h, and then naturally cool down to room temperature, so as to prepare the phosphorene-nitrogen-doped carbon composite Material.

[0030] Specifically, the specific surface area of ​​common phosphorene materials in the prior a...

Embodiment 2

[0032] A method for preparing phosphorene-nitrogen-doped carbon composite material, comprising the following steps:

[0033] In step a2, 12.5 g of phosphorene and 9 g of pyrrole were placed together in a mixture of methanol and ethanol and mixed uniformly to obtain a uniformly dispersed suspension with a concentration of 5 g / L.

[0034] Step b2, adding 6.1 g of ammonium persulfate to the suspension, and reacting for 10 h, then performing solid-liquid separation on the reaction product, and vacuum-drying the solid obtained by the solid-liquid separation at 60° C. to constant weight to obtain a complex Precursor.

[0035] Step c2, placing the composite precursor in a high-temperature furnace filled with argon for calcination, the calcination temperature is 900°C, the holding time is 15h, and then the temperature is naturally cooled to room temperature, thereby preparing phosphorene-nitrogen-doped carbon composite material.

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Abstract

The invention discloses a method for preparing a phosphorene-nitrogen doped carbon composite material. The method comprises the steps that phosphorene and nitrogenous organic compounds are jointly placed into a solution to be uniformly mixed, so that uniformly dispersed suspension liquid is obtained; oxidizing compounds are added into the suspension liquid; reaction is performed for 0.1 to 72h; then, reaction products are subjected to solid-liquid separation; solids obtained through solid-liquid separation are dried, so that a compound precursor is obtained; the compound precursor is put into a high-temperature furnace filled with protection gas to be calcined, wherein the calcining temperature is 500 to 1100 DEG C, and the heat insulation time is 1 to 72h; then, the temperature is lowered to room temperature, so that the phosphorene-nitrogen doped carbon composite material is prepared. The phosphorene-nitrogen doped carbon composite material has good electrical conductivity, thermal conductivity, stability, flexibility, faradaic pseudocapacitance performance and adsorption performance; the operation is simple; the requirements on equipment are low; the product quality is good; the yield is high; the product can be widely applied to the fields of electrocommunication, traffic transportation and the like.

Description

technical field [0001] The invention relates to the field of phosphorene composite materials, in particular to a method for preparing phosphorene-nitrogen-doped carbon composite materials. Background technique [0002] Phosphorene material is a new type of phosphorus nanomaterial that is densely packed into a two-dimensional honeycomb lattice structure by a single layer of phosphorus atoms. Its special microscopic stable structure makes it have excellent electrochemical performance and thermal conductivity. , transportation and other fields have broad application prospects. [0003] Due to the strong van der Waals force and large specific surface area between phosphorus atom layers, phosphorene materials are prone to lamination and form a sheet-like structure similar to a thin film. Phosphorene has excellent properties such as adsorption, electrical conductivity, and thermal conductivity. In addition, the strong chemical activity of phosphorene makes it easy to be eroded b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/00C01B32/05
CPCC01B25/003C01P2004/80
Inventor 祖雷崔秀国连慧琴
Owner 北京磷玺科技有限公司
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