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Functionalized amino-titanium carbide and preparation method thereof

A technology of amino and titanium carbide, applied in the direction of titanium carbide, carbide, etc., can solve the problems of being easily oxidized and reducing the electrochemical performance of composite materials, and achieve the effect of improving surface activity, reducing oxidation, and wide application

Inactive Publication Date: 2017-04-26
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Usually at high temperature (above 150 °C) to modify Ti with metal oxide support 3 C 2 , but loading modified Ti at high temperature 3 C 2 process and is easily oxidized, reducing the electrochemical performance of the composite material

Method used

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  • Functionalized amino-titanium carbide and preparation method thereof
  • Functionalized amino-titanium carbide and preparation method thereof

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preparation example Construction

[0033] A functionalized amino-Ti of the present invention 3 C 2 The oil bath preparation method of material, comprises the steps:

[0034] Step 1, refine the powder

[0035] Refinement of ternary layered Ti with a purity greater than 97% by high energy ball milling 3 AlC 2Ceramic powder, ball milling conditions: the mass ratio of ball stone, mixing material and ball milling medium (absolute ethanol) is 10:1:1, the ball milling speed is 400r / min, the high energy ball milling time is 1h~4h, and then the obtained solid-liquid mixture The material is dried at 40°C to 60°C to obtain Ti with a particle size of 8 μm to 75 μm 3 AlC 2 ceramic powder;

[0036] Step 2, two-dimensional layered nanomaterial MXene-Ti 3 C 2 preparation of

[0037] Ti obtained in step 1 3 AlC 2 The ceramic powder is immersed in the HF acid solution, in which 2g~10gTi 3 AlC 2 The powder is immersed in 50mL-200mL HF acid solution with a mass concentration of 35wt%-45wt% and reacted for 6h-120h; 3 ...

Embodiment 1

[0042] 1) Refined powder

[0043] Refinement of ternary layered Ti with a purity greater than 97% by high energy ball milling 3 AlC 2 Ceramic powder, ball milling condition: the mass ratio of ball stone, mixing material and ball milling medium (dehydrated alcohol) is 10:1:1, and ball milling speed is 400r / min, and the time of high-energy ball milling is 4h, then the gained solid-liquid mixture is in Dry at 50°C to obtain Ti with a particle size of about 8 μm 3 AlC 2 Ceramic powder.

[0044] 2) Two-dimensional layered nanomaterial MXene-Ti 3 C 2 preparation of

[0045] With the obtained Ti in step 1) 3 AlC 2 The ceramic powder is immersed in HF acid solution, in which 5g Ti 3 AlC 2 The powder was immersed in 100mL mass concentration of 40wt% HF acid solution for 48h; magnetic stirring, the ternary layered Ti 3 AlC 2 After the powder is corroded, it is centrifugally cleaned with deionized water until the pH is 5-6, and the obtained solid sample is dried at room tempe...

Embodiment 2

[0051] 1) Refined powder

[0052] Refinement of ternary layered Ti with a purity greater than 97% by high energy ball milling 3 AlC 2 Ceramic powder, ball milling condition: the mass ratio of ball stone, mixing material and ball milling medium (dehydrated alcohol) is 10:1:1, and ball milling speed is 400r / min, and the time of high-energy ball milling is 2h, then the gained solid-liquid mixture is in Dry at 50°C to obtain Ti with a particle size of about 56 μm 3 AlC 2 ceramic powder;

[0053] 2) Two-dimensional layered nanomaterial MXene-Ti 3 C 2 preparation of

[0054] With the obtained Ti in step 1) 3 AlC 2 The ceramic powder is immersed in the HF acid solution, in which 2gTi 3 AlC 2 The powder was immersed in 50mL mass concentration of 45wt% HF acid solution for 12h; magnetic stirring, the ternary layered Ti 3 AlC 2 After the powder is corroded, it is centrifugally cleaned with deionized water until the pH is 5-6, and the obtained solid sample is dried at room te...

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Abstract

The invention relates to functionalized amino-titanium carbide and a preparation method thereof. The preparation method comprises the following steps: adding a two-dimensional layered nanometer material MXene-Ti3C2 into ultrapure water, and carrying out ultrasound so as to obtain a uniformly-dispersed Ti3C2 dispersion; adding p-phenylenediamine and isoamyl nitrite into the Ti3C2 dispersion, and carrying out a reaction under heating at 60 to 110 DEG C; and after the reaction is completed, cooling the reaction solution to room temperature, and carrying out separation and drying so as to obtain the functionalized amino-titanium carbide. According to the invention, by adopting two-dimensional layered Ti3C2 surface containing hydroxyl and fluorine functional groups, and through heating treatment of a solution of Ti3C2, p-phenylenediamine and isoamyl nitrite and functionalized modification of the hydroxyl and fluorine functional groups on the Ti3C2 surface, an amino group grows on the surface of the two-dimensional layered material MXene-Ti3C2, so the functionalized amino-Ti3C2 is obtained, and surface activity and specific surface area are improved.

Description

[0001] 【Technical field】 [0002] The invention belongs to the field of preparation of ceramic materials, and in particular relates to a functionalized amino-titanium carbide and a preparation method thereof. [0003] 【Background technique】 [0004] Ternary layered ceramic material Ti 3 AlC 2 It belongs to layered hexagonal crystal structure. at Ti 3 AlC 2 In the crystal structure, Ti and C atoms form Ti 6 The C octahedron is separated by the Al layer, and the C atom is located in the center of the octahedron. The combination of C and Ti atoms is a strong covalent bond, while Ti-Ti, and between Ti and Al are weakly bonded, similar to the bond between graphite Van der Waals weak bonds. [0005] Ti 3 AlC 2 It has the properties of both metal and ceramics. At room temperature, it has thermal conductivity and electrical conductivity, as well as low Vickers microhardness and high elastic modulus. It can be machined like metal and can be machined at a high temperature. It is...

Claims

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Application Information

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IPC IPC(8): C01B32/921C04B35/56C04B35/626
CPCC04B35/5611C01P2004/03C01P2006/40C04B35/62605
Inventor 朱建锋任莹莹王雷汤祎黄家璇周文静牛冬娟李学林
Owner SHAANXI UNIV OF SCI & TECH
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