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Titanium carbide in-situ growth CNTs three-dimensional composite with polydopamine serving as transition layer and preparation method thereof

A technology of polydopamine and in-situ growth, applied in the direction of titanium carbide, carbide, nanotechnology for materials and surface science, etc., can solve the problem of high price, and achieve the effect of low equipment requirements, high quality and low cost

Active Publication Date: 2017-05-24
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yan et al. 3 C 2 Ti 3 C 2 Thin slices, the commercial CNTs were sonicated to obtain a stable suspension, and then the Ti 3 C 2 The flakes and CNTs were thoroughly mixed with different mass ratios by ultrasonic treatment, and then the mixture was filtered and dried to obtain Ti 3 C 2 / CNT composite materials; but the price of commercial CNTs is relatively high

Method used

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  • Titanium carbide in-situ growth CNTs three-dimensional composite with polydopamine serving as transition layer and preparation method thereof
  • Titanium carbide in-situ growth CNTs three-dimensional composite with polydopamine serving as transition layer and preparation method thereof
  • Titanium carbide in-situ growth CNTs three-dimensional composite with polydopamine serving as transition layer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Ti 3 C 2 Preparation of @PDA composite materials;

[0044] First, 500mg of Ti 3 C 2 Ultrasonic dispersion of nano powder in 300mL ultrapure water, ultrasonic 30min; 1.0g dopamine hydrochloride dissolved in 100mL ultrapure water, add the above solution, stir at room temperature under light-shielding conditions for 1h; then add 100mL Tris-buffer (50mmolL -1 , pH=8.5), stirred at room temperature for 24 hours under light-shielding conditions; centrifuged the obtained mixed solution, washed with deionized water until the supernatant was clear, transferred it to a freeze dryer, and took it out after 48 hours to obtain Ti 3 C 2 @PDA.

[0045] (2) Ti 3 C 2 Preparation of @PDA@CNTs three-dimensional composite materials;

[0046] First, 300mg of Ti 3 C 2 @PDA nanopowder, add to 200mL ultrapure water, ultrasonically disperse for 30min; then, add 0.29g Co(NO 3 ) 2 ·6H 2 O, stirred at room temperature for 4 hours; secondly, 6.0 g of urea was added, and the above mi...

Embodiment 2

[0049] (1) Ti 3 C 2 Preparation of @PDA composite materials;

[0050] First, 500mg of Ti 3 C 2 Ultrasonic dispersion of nano powder in 150mL ultrapure water, ultrasonic 30min; 0.5g dopamine hydrochloride dissolved in 50mL ultrapure water, add the above solution, stir at room temperature under light-shielding conditions for 1h; then add 50mL Tris-buffer (50mmolL -1 , pH=8.5), stirred at room temperature for 24 hours under light-shielding conditions; centrifuged the obtained mixed solution, washed with deionized water until the supernatant was clear, transferred it to a freeze dryer, and took it out after 48 hours to obtain Ti 3 C 2 @PDA.

[0051] (2) Ti 3 C 2 Preparation of @PDA@CNTs three-dimensional composite materials;

[0052] First, 300mg of Ti 3 C 2 @PDA nanopowder, add to 200mL ultrapure water, ultrasonically disperse for 30min; then, add 0.29g Co(NO 3 ) 2 ·6H 2 O, stirred at room temperature for 4 hours; secondly, 6.0 g of urea was added, and the above mixe...

Embodiment 3

[0054] (1) Ti 3 C 2 Preparation of @PDA composite materials;

[0055] First, 500mg of Ti 3 C 2 Ultrasonic dispersion of nano powder in 75mL ultrapure water, ultrasonic 30min; 0.25g dopamine hydrochloride dissolved in 25mL ultrapure water, add the above solution, stir at room temperature under light-shielding conditions for 1h; then add 25mL Tris-buffer (50mmolL -1 , pH=8.5), stirred at room temperature for 24 hours under light-shielding conditions; centrifuged the obtained mixed solution, washed with deionized water until the supernatant was clear, transferred it to a freeze dryer, and took it out after 48 hours to obtain Ti 3 C 2 @PDA.

[0056] (2) Ti 3 C 2 Preparation of @PDA@CNTs three-dimensional composite materials;

[0057] First, 300mg of Ti 3 C 2 @PDA nanopowder, add to 200mL ultrapure water, ultrasonically disperse for 30min; then, add 0.29g Co(NO 3 ) 2 ·6H 2 O, stirred at room temperature for 4 hours; secondly, 6.0 g of urea was added, and the above mixe...

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Abstract

The invention relates to a titanium carbide in-situ growth CNTs three-dimensional composite with polydopamine serving as a transition layer and a preparation method thereof. The method includes the steps that Ti3C2 nano-powder and dopamine hydrochloride are dispersed into ultrapure water respectively, even mixing is conducted, and stirring is conducted under the shading condition; a Tris- buffer solution is added, and stirring continues under the shading condition; the obtained mixed solution is subjected to separation, washing and drying, and Ti3C2@PDA nano-powder is obtained; the Ti3C2@PDA nano-powder is added into ultrapure water, Co(NO3)2.6H2O is added after uniform dispersion, and stirring is conducted for a reaction; urea is added after the reaction is finished, stirring is continuously conducted under a constant temperature to evaporate water, and precursor powder is obtained; the precursor powder is subjected to heat treatment, and the titanium carbide in-situ growth CNTs three-dimensional composite with polydopamine serving as the transition layer is obtained. The Ti3C2@PDA@CNTs three-dimensional composite is successfully prepared through a simple pyrolysis method.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of preparation of nanometer functional materials, and in particular relates to a three-dimensional composite material in which polydopamine is used as a transition layer of titanium carbide to grow CNTs in situ and a preparation method thereof. [0003] 【Background technique】 [0004] Recently, the discovery of a class of materials known as MXenes has expanded the family of 2D materials, namely transition metal carbides or carbonitrides, which are structurally similar to graphene. MXene materials can be obtained by removing the A-layer elements in the MAX phase by etching and keeping the original MX structure unchanged, such as Ti 3 C 2 、Ti 2 C et al. Due to its high conductivity, large specific surface area, multilayer structure, good chemical stability and environmental friendliness, MXene has great application potential in the fields of lithium-ion batteries, supercapacitors, photocatalysis and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/921C01B32/16B82Y30/00H01G11/36H01G11/48H01G11/26H01M4/36H01M4/583H01M4/62H01M4/60
CPCB82Y30/00C01P2002/72C01P2004/03C01P2006/40H01G11/26H01G11/36H01G11/48H01M4/366H01M4/583H01M4/602H01M4/625Y02E60/10
Inventor 朱建锋李学林王雷秦毅武文玲吕文静卫丹王芬
Owner SHAANXI UNIV OF SCI & TECH
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