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Green and efficient preparation method of titanium carbide Mxene nanosheet

A nanosheet, titanium carbide technology, applied in titanium carbide, chemical instruments and methods, carbides, etc., can solve the problems of strong corrosion and toxicity of Mxene materials, achieve green and controllable preparation process, high production efficiency, avoid corrosion Sexual and Toxic Effects

Active Publication Date: 2021-11-09
HARBIN INST OF TECH AT WEIHAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the invention is to solve the existing Ti 3 C 2 T x Mxene materials have extremely strong corrosion and toxicity problems in the preparation process, and a green and efficient preparation method of titanium carbide Mxene nanosheets is provided

Method used

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  • Green and efficient preparation method of titanium carbide Mxene nanosheet
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  • Green and efficient preparation method of titanium carbide Mxene nanosheet

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specific Embodiment approach 1

[0019] Specific implementation mode one: a green and efficient preparation method of titanium carbide Mxene nanosheets in this implementation mode is realized according to the following steps:

[0020] 1. Weigh titanium carbide, titanium powder, aluminum powder, sodium chloride and Potassium chloride is mixed and ground, placed in a tube furnace, calcined under an inert atmosphere, the product is washed with deionized water, and then dried in an oven to obtain powder A;

[0021] 2. According to the molar ratio (0.5~1):(1~5):(1~5):(1~5), weigh the above powder A, nickel chloride hexahydrate, potassium chloride and sodium chloride in sequence and mix them Grinding, placing in a tube furnace, calcining under an inert atmosphere, washing the product with deionized water, and then drying in an oven to obtain powder B;

[0022] 3. According to the mass volume ratio of 1g: (60-200) mL, mix the above powder B with ferric chloride solution, wash with deionized water after magnetic sti...

specific Embodiment approach 2

[0025] Embodiment 2: This embodiment differs from Embodiment 1 in that the inert atmosphere in step 1 is argon or nitrogen; the temperature of the calcination is 1000° C. to 1400° C., and the calcination time is 3 to 5 hours. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0026] Specific embodiment 3: This embodiment differs from specific embodiment 1 or 2 in that the number of deionized water washing in step 1 is 2 to 5 times. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a green and efficient preparation method of a titanium carbide Mxene nanosheet, and belongs to the technical field of preparation of inorganic nano materials. The invention aims to solve the problem that the existing Ti < 3 > C < 2 > T < x > Mxene material has extremely strong corrosivity and toxicity in the preparation process. The method comprises the following steps: 1, preparing powder A; 2, preparing powder B; 3, preparing powder C; 4, transferring the powder C, an intercalator and deionized water into an electrolytic tank, preheating, and stripping intercalation; and 5, washing the product, and carrying out vacuum freeze drying to obtain the Ti < 3 > C < 2 > T < x > Mxene nanosheet. According to the method, NiCl2. 6H2O is used for removing an Al atomic layer of a Ti3AlC2 phase, ferric chloride is used for removing the generated nickel elementary substance, a green and environment-friendly intercalation agent is used for further stripping the Ti3C2Tx Mxene material, the material is successfully constructed, the preparation process is green and controllable, and the production efficiency is high. The Ti < 3 > C < 2 > T < x > Mxene nanosheet prepared by the preparation method disclosed by the invention is used as a non-metal nano material.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic nanometer materials; 3 C 2 T x Green and efficient preparation method of Mxene nanosheets. Background technique [0002] The new two-dimensional material MXene has been widely used in optical drive, electromagnetic wave absorption, thermal catalysis, sensing and other fields due to its excellent thermal conductivity, electrical conductivity, high photothermal conversion efficiency and tunable surface. Among the known MXenes, for Ti 3 C 2 T x MXene is the most widely studied, and its performance is more superior and stable, such as Ti 3 C 2 T x With sheet resistance comparable to graphene and visible light and infrared light transmittance greater than 90%, it is an excellent candidate material for optoelectronic devices. Ti currently 3 C 2 T x Preparation of Ti etched with hydrofluoric acid 3 AlC 2 Mainly, and the subsequent stripping uses toxic tetrabutylammonium hy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/90C01B32/921B82Y30/00B82Y40/00
CPCC01B32/90C01B32/921B82Y30/00B82Y40/00C01P2004/03C01P2004/62C01P2004/61C01P2002/72
Inventor 钟博刘越刘冬冬夏龙张涛姜大海
Owner HARBIN INST OF TECH AT WEIHAI
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