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Ti2AlC-based method for preparing titanates with different morphologies

A titanate and morphology technology, applied in titanate, chemical instruments and methods, titanium compounds, etc., can solve problems such as complex process flow, and achieve the effects of good dispersion, easy repetition and simple method

Active Publication Date: 2018-09-14
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the above technologies are two-step method, compared with one-step method, the process is more complicated

Method used

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  • Ti2AlC-based method for preparing titanates with different morphologies
  • Ti2AlC-based method for preparing titanates with different morphologies
  • Ti2AlC-based method for preparing titanates with different morphologies

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Ti with particle size less than 48 μm 2 Mix and stir AlC powder with KOH solution with a concentration of 40mol / L, Ti 2 The mass ratio of AlC powder to lye is 1:150, and the hydrothermal reaction is carried out at 180°C for 10 hours. The obtained product is filtered, washed, and dried to obtain columnar titanate, see figure 1 (a), illustrating the formation of titanates, see figure 1 (b), the complete morphology of columnar titanate can be seen.

Embodiment 2

[0021] Ti with particle size less than 48 μm 2 Mix and stir AlC powder with KOH solution with a concentration of 16mol / L, Ti 2 The mass ratio of AlC powder to lye is 1:300, and the hydrothermal reaction is carried out at 180°C for 5 hours. The obtained product is filtered, washed, and dried to obtain rod-shaped titanate. See figure 2 (a), illustrating the formation of titanates, see figure 2 (b), the complete morphology of the rod-shaped titanate can be seen.

Embodiment 3

[0023] Ti with particle size less than 48 μm 2 Mix and stir AlC powder with KOH solution with a concentration of 0.5mol / L, Ti 2 The mass ratio of AlC powder to lye is 1:500, and the hydrothermal reaction is carried out at 180°C for 5 hours. The obtained product is filtered, washed, and dried to obtain flaky titanate. See image 3 (a), illustrating the formation of titanates, see image 3 (b), the complete morphology of flaky titanate can be seen.

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Abstract

The invention discloses a Ti2AlC-based method for preparing titanates with different morphologies. The Ti2AlC-based method includes mixing Ti2AlC powder with alkali liquor with a certain concentrationand mass before stirring, conducting a hydrothermal reaction at a certain temperature for a while, and subjecting an obtained product to filtering, washing and drying to obtain the titanates with thedifferent morphologies. The Ti2AlC-based method has the advantages that alkali can react with titanium layers to form the titanates, and can also react with Al layers to remove Al, so that structuralreconstruction is realized, a titanate-carbon composite material can be formed, and the titanates with the different morphologies can be prepared; the prepared titanates are controllable in morphology, uniform in size and high in dispersity; the method is simple, the morphology is controllable, and easiness in repetition is realized.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a Ti-based 2 A method for preparing titanates with different morphologies from AlC. Background technique [0002] The MAX phase is a three-dimensional layered crystal, usually denoted as M n+1 AX n (n=1, 2, 3), wherein M represents a transition metal element, A is mainly the third or fourth main group element, and X is carbon or nitrogen. Common MAX phases include Ti 3 AlC 2 、Ti 2 AlC. to Ti 3 AlC 2 、Ti 2 Selective etching of Al layer by AlC can correspond to layered Ti 3 C 2 、Ti 2 C, this titanium-based layered material has become a research hotspot in electrochemical research due to its suitable layer spacing, low working voltage and chemical stability, and its microscopic morphology determines the electrochemical performance. The common alkalization method to prepare titanate uses tetrabutyl titanate and titanium tetrachloride as titanium sources....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/00
CPCC01G23/003C01P2002/72C01P2004/03
Inventor 刘毅李樊张利锋郑鹏原晓艳王晓飞霍京浩郭守武
Owner SHAANXI UNIV OF SCI & TECH
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