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Polyaniline surface modified titanium carbide composite material and low-temperature preparation method thereof

A surface modification and composite material technology, applied in the field of polyaniline surface modified titanium carbide composite material and its low-temperature preparation method, can solve problems such as damage and poor electrochemical performance, achieve simple and safe operation, improve electrochemical performance, reduce The effect of oxidation

Active Publication Date: 2017-05-17
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, PANI / Ti 3 C 2 The electrochemical performance of the composite material is not good, and the 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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  • Polyaniline surface modified titanium carbide composite material and low-temperature preparation method thereof
  • Polyaniline surface modified titanium carbide composite material and low-temperature preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1) Refined powder

[0045] 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.

[0046] 2) Two-dimensional layered nanomaterial MXene-Ti 3 C 2 preparation of

[0047] 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...

Embodiment 3

[0058] 1) with embodiment 1 step 1);

[0059] 2) Two-dimensional layered nanomaterial MXene-Ti 3 C 2 preparation of

[0060] 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 ;

[0061] 3) Preparation of Ti by low temperature stirring method 3 C 2 / polyaniline composite material

[0062] Dissolve 0.06g citric acid in 80mL ultrapure water at room temperature, and the MXene-Ti obtained in step 2 3 C2 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 dispersed...

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Abstract

The invention relates to a polyaniline surface modified titanium carbide composite material and a low-temperature preparation method thereof. The preparation method comprises the following steps: firstly adding a two-dimensional laminar nano material MXene-Ti3C2 into a citric acid liquid to be uniformly dispersed to obtain a Ti3C2 mixed liquid; adding aniline into the Ti3C2 mixed liquid to be uniformly dispersed to obtain a mixed liquid; and at 0-5 DEG C, dropwise adding a catalyst into the mixed liquid, stirring the mixed liquid to polymerize till the mixed liquid gradually turns into a homogeneous black liquid from a transparent liquid, and washing and drying the black liquid to obtain the polyaniline surface modified titanium carbide composite material. The PANI / Ti3C2 composite material is prepared at the low temperature of 0-5 DEG C, so that oxidization of Ti3C2 is reduced, the advantages of the Ti3C2 two-dimensional laminar structure material are maintained, and a reaction is performed in an organic acid liquid to modify functional groups on the surface of Ti3C2, so that PANI and Ti3C2 are more tightly combined, and therefore, the electrochemical property of the material is improved.

Description

[0001] 【Technical field】 [0002] The invention belongs to the field of nanometer functional materials, and in particular relates to a polyaniline surface-modified titanium carbide composite material and a low-temperature 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08K7/00C08K3/14
CPCC08G73/0266C08K3/14C08K7/00C08K2201/011
Inventor 朱建锋任莹莹王雷汤祎黄家璇李学林牛冬娟周文静
Owner SHAANXI UNIV OF SCI & TECH
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