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A polyaniline nanoparticle/two-dimensional layered titanium carbide composite material and its low-temperature preparation method

A nanoparticle and two-dimensional layered technology, which is applied in the field of polyaniline nanoparticle/two-dimensional layered titanium carbide composite material and its low-temperature preparation, can solve problems such as damage, achieve simple and safe operation, safe experimental process and wide application. Effect

Active Publication Date: 2019-05-28
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional high temperature (above 150°C) hydrothermal modification of Ti 3 C 2 method to easily make Ti 3 C 2 Oxidation, destruction of Ti 3 C 2 two-dimensional layered structure

Method used

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  • A polyaniline nanoparticle/two-dimensional layered titanium carbide composite material and its low-temperature preparation method
  • A polyaniline nanoparticle/two-dimensional layered titanium carbide composite material and its low-temperature preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1) Refined powder

[0040] 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.

[0041] 2) Two-dimensional layered nanomaterial MXene-Ti 3 C 2 preparation of

[0042] 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

[0046] 1) Refined powder

[0047] 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;

[0048] 2) Two-dimensional layered nanomaterial MXene-Ti 3 C 2 preparation of

[0049] 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...

Embodiment 3

[0053] 1) with embodiment 1 step 1);

[0054] 2) Two-dimensional layered nanomaterial MXene-Ti 3 C 2 preparation of

[0055] With the obtained Ti in step 1) 3 AlC 2 The ceramic powder is immersed in HF acid solution, in which 2g Ti 3 AlC 2 The powder was immersed in 50mL mass concentration of 45wt% HF acid solution for 6h; 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 temperature to obtain a two-dimensional layered nanomaterial MXene-Ti 3 C 2 ;

[0056] 3) Preparation of Ti by low temperature stirring method 3 C 2 / polyaniline composite material

[0057] Dissolve 0.15g oxalic acid in 80mL ultrapure water at room temperature, and the MXene-Ti obtained in step 2 3 C 2 Disperse 90 mg in the above solution and put it into an ultrasonic reactor for 1 h to form dispersed Ti 3 C 2 Mixed liquor; To the obtained dispers...

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Abstract

The invention relates to a polyaniline nano particle / two-dimensional layered titanium carbide composite material and a low-temperature preparation method of the polyaniline nano particle / two-dimensional layered titanium carbide composite material. The preparation method comprises the following steps: firstly, adding a two-dimensional layered nano material MXene-Ti3C2 into an oxalic acid solution, and uniformly dispersing to obtain a Ti3C2 mixing solution; adding aniline into the Ti3C2 mixing solution, and uniformly dispersing to obtain a mixing solution; and adding a catalyst into the mixing solution drop by drop, carrying out stirring polymerization till the mixing solution is gradually changed from a transparent solution into a uniform black solution, and carrying out washing and drying to obtain the polyaniline nano particle / two-dimensional layered titanium carbide composite material. According to the method for preparing the PANI / Ti3C2 composite material at low temperature of 0 to 5 DEG C, oxidization of Ti3C2 is reduced, and the advantages of a Ti3C2 two-dimensional layered structural material are retained; and furthermore, reaction is carried out in an organic acidic solution to modify a functional group on the surface of Ti3C2, so that PANI and Ti3C2 are combined more tightly, and the electrochemical property of the material is improved.

Description

【Technical field】 [0001] The invention relates to the field of nano functional materials, in particular to a polyaniline nano particle / two-dimensional layered titanium carbide composite material and a low-temperature preparation method thereof. 【Background technique】 [0002] 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. [0003] 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02C08K9/04C08K9/00C08K7/00C08K3/14
CPCC08G73/0266C08K3/14C08K7/00C08K9/00C08K9/04C08K2201/011
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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