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Titanium dioxide nanowire/two-dimensional layered titanium carbide composite material and low-temperature preparation method thereof

A two-dimensional layered, titanium dioxide technology, applied in the direction of titanium oxide/hydroxide, titanium dioxide, nanotechnology, etc., can solve the problem of disordered arrangement of titanium oxide, achieve improved electrochemical performance, novel shape, and preparation process simple effect

Inactive Publication Date: 2017-06-23
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Most of the titanium oxide / two-dimensional layered titanium carbide nanocomposites reported in the literature are prepared by liquid phase method or heat treatment. The disadvantage is that the prepared titanium oxide is mostly particles and disordered arrangement.

Method used

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  • Titanium dioxide nanowire/two-dimensional layered titanium carbide composite material and low-temperature preparation method thereof
  • Titanium dioxide nanowire/two-dimensional layered titanium carbide composite material and low-temperature preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] Take Ti 3 C 2 Dissolve 50 mg of the powder in 20 mL of potassium hydroxide solution with a concentration of 1 mol / L and stir at 40 ° C for 3 h. Then, the reaction mixed solution was centrifuged and washed several times with deionized water and absolute ethanol, and then the solid was separated by centrifugation, and vacuum-dried at 40° C. for 30 hours to obtain a titanium dioxide nanowire / two-dimensional layered titanium carbide nanocomposite material.

Embodiment 2

[0031] Take Ti 3 C 2 Dissolve 200 mg of the powder in 20 mL of potassium hydroxide solution with a concentration of 3 mol / L and stir at 35 °C for 0.5 h. Then, the reaction mixed solution was centrifuged and washed several times with deionized water and absolute ethanol, and then the solid was separated by centrifugation, and vacuum-dried at 60° C. for 12 hours to obtain a titanium dioxide nanowire / two-dimensional layered titanium carbide nanocomposite material.

Embodiment 3

[0033] Take Ti 3 C 2 Dissolve 150mg of the powder in 50mL of 8mol / L sodium hydroxide solution and stir at 30°C for 0.5h. Then, the reaction mixed solution was centrifuged and washed several times with deionized water and absolute ethanol, and then the solid was separated by centrifugation, and vacuum-dried at 60° C. for 48 hours to obtain a titanium dioxide nanowire / two-dimensional layered titanium carbide nanocomposite material.

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Abstract

The invention provides a titanium dioxide nanowire / two-dimensional layered titanium carbide composite material and a low-temperature preparation method thereof. The low-temperature preparation method comprises the following steps of dissolving Ti3C2 powder into an alkali solution with concentration of 1-8 mol / L, and performing stirring reaction for 0.5-3 hours at a temperature of 30-50 DEG C, thereby obtaining a reaction mixed solution; and washing the reaction mixed solution, separating solid, and drying to obtain the titanium dioxide nanowire / two-dimensional layered titanium carbide composite material. According to the method provided by the invention, Ti3C2 and alkali solutions with different concentrations are mixed and stirred, so that the titanium dioxide nanowire / two-dimensional layered titanium carbide composite material is obtained. A great number of titanium dioxide nanowires are distributed between the surface of a sheet layer and the sheet layer, so that interlayer space is increased, the specific surface of the material is increased, stacking of layers is effectively prevented, and electrochemical properties of the nano composite material are increased. Moreover, the preparation method has the characteristics of being simple and controllable in preparation process, capable of obtaining a novel titanium dioxide feature and the like.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of preparation of nano functional materials, in particular to a titanium dioxide nanowire / two-dimensional layered titanium carbide composite material and a low-temperature preparation method thereof. [0003] 【Background technique】 [0004] Two-dimensional layered titanium carbide (MXene) is the use of Ti 3 AlC 2 The difference in interlayer force is obtained by corroding the Al layer by a certain method. Due to its unique graphene-like structure, large specific surface area, and good conductivity, it has been widely used in adsorption, photocatalysis, biosensors, lithium-ion batteries, supercapacitors, etc. In 2015, Zhao et al. combined carbon nanotubes with Ti 3 C 2 T x Composite to get a sandwich-like Ti 3 C 2 Tx / MWCNT composites, experiments show that Ti after loading 3 C 2 Tx / MWCNT has high capacitance and ultra-high rate performance. In 2016, Huang et al. passed Cu(CH 3 COO) 2 h 2 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053C01G23/00B82Y30/00B82Y40/00
CPCC01G23/053B82Y30/00B82Y40/00C01G23/00C01P2002/72C01P2004/03C01P2004/16C01P2004/20C01P2004/62C01P2004/84C01P2006/40
Inventor 朱建锋吕文静李学林周文静任莹莹卫丹曹敏娟牛冬娟
Owner SHAANXI UNIV OF SCI & TECH
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