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Method for preparing cerium dioxide/two-dimensional layered titanium carbide composite material through precipitation process

A ceria, two-dimensional layered technology, which is applied in the field of preparation of ceria/two-dimensional layered titanium carbide composite materials by precipitation method, can solve the problems of not suitable for mass production, narrow application range, small surface area, etc., and achieve load The method is simple and effective, the shape is diverse, and the effect of increasing the specific surface area

Active Publication Date: 2016-05-04
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Existing MXene-Ti 3 C 2 , single performance, small surface area, narrow application range, and not suitable for mass production

Method used

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  • Method for preparing cerium dioxide/two-dimensional layered titanium carbide composite material through precipitation process
  • Method for preparing cerium dioxide/two-dimensional layered titanium carbide composite material through precipitation process
  • Method for preparing cerium dioxide/two-dimensional layered titanium carbide composite material through precipitation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1, refine the powder

[0031] Refinement of ternary layered Ti with a purity greater than 97 wt% by high energy ball milling 3 AlC 2 Ceramic powder, ball milling conditions: the mass ratio of ball stone, mixing material and absolute ethanol is 10:1:1, the ball milling speed is 350r / min, the high energy ball milling time is 2h, and then the obtained solid-liquid mixture is baked at 40°C Dry, get Ti 3 AlC 2 ceramic powder;

[0032] Step 2, two-dimensional layered nanomaterial MXene-Ti 3 C 2 preparation of

[0033] Ti obtained in step 1 3 AlC 2 The ceramic powder is immersed in HF acid solution, in which 5gTi 3 AlC 2 The powder was immersed in 80ml mass concentration of 40wt% HF acid solution and reacted for 24h; magnetic stirring, the Ti 3 AlC 2 After the powder was corroded, it was centrifugally washed with deionized water until the pH was 6, and the obtained solid sample was dried at room temperature to obtain the two-dimensional layered nanomaterial MX...

Embodiment 2

[0041] Step 1, refine the powder

[0042] Refinement of ternary layered Ti with a purity greater than 97 wt% by high energy ball milling 3 AlC 2 Ceramic powder, ball milling conditions: the mass ratio of ball stone, mixing material and absolute ethanol is 10:1:1, the ball milling speed is 350r / min, the high energy ball milling time is 2h, and then the obtained solid-liquid mixture is baked at 40°C Dry, get Ti 3 AlC 2 ceramic powder;

[0043] Step 2, two-dimensional layered nanomaterial MXene-Ti 3 C 2 preparation of

[0044] Ti obtained in step 1 3 AlC 2 The ceramic powder is immersed in HF acid solution, in which 5gTi 3 AlC 2 The powder was immersed in 80ml mass concentration of 40wt% HF acid solution and reacted for 24h; magnetic stirring, the Ti 3 AlC 2 After the powder was corroded, it was centrifugally washed with deionized water until the pH was 6, and the obtained solid sample was dried at room temperature to obtain the two-dimensional layered nanomaterial MX...

Embodiment 3

[0052] Step 1, refine the powder

[0053] Refinement of ternary layered Ti with a purity greater than 97 wt% by high energy ball milling 3 AlC 2 Ceramic powder, ball milling conditions: the mass ratio of ball stone, mixing material and absolute ethanol is 10:1:1, the ball milling speed is 350r / min, the high energy ball milling time is 2h, and then the obtained solid-liquid mixture is baked at 40°C Dry, get Ti 3 AlC 2 ceramic powder;

[0054] Step 2, two-dimensional layered nanomaterial MXene-Ti 3 C 2 preparation of

[0055] Ti obtained in step 1 3 AlC 2 The ceramic powder is immersed in HF acid solution, in which 5gTi 3 AlC 2 The powder was immersed in 80ml mass concentration of 40wt% HF acid solution and reacted for 24h; magnetic stirring, the Ti 3 AlC 2 After the powder was corroded, it was centrifugally washed with deionized water until the pH was 6, and the obtained solid sample was dried at room temperature to obtain the two-dimensional layered nanomaterial MX...

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Abstract

The invention provides a method for preparing a cerium dioxide / two-dimensional layered titanium carbide composite material through a precipitation process. The method comprises the following steps: high-energy ball milling and crystal grain refinement so as to obtain high-purity three-component layered Ti3AlC2 powder; preparation of two-dimensional layered nano-material MXene-Ti3C2 through hydrofluoric acid corrosion; and formation of CeO2 on the surface and interlayers of MXene-Ti3C2 through the precipitation process so as to allow CeO2 to be loaded with MXene-Ti3C2, thereby obtaining the CeO2 / MXene-Ti3C2 nanocomposite material. The method has the advantages of simple process, controllable technology and low cost; and the prepared nanocomposite material has the characteristics of uniform lamellas of the two-dimensional layered MXene-Ti3C2, uniform distribution of CeO2 and the like and the advantages of a large specific surface area, good conductivity and good photocatalysis performance, which facilitates application of the nanocomposite material in fields like photocatalysis, lithium ion batteries and supercapacitors.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanocomposite materials, in particular to a method for preparing ceria / two-dimensional layered titanium carbide composite materials by a precipitation method. 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 at a h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22B01J37/03B82Y30/00B82Y40/00
CPCB01J27/22B01J37/035B82Y30/00B82Y40/00
Inventor 朱建锋周文静汤祎曹敏娟吕文静任莹莹鹿萧
Owner SHAANXI UNIV OF SCI & TECH
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