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Ultrasound-assistant preparation method of layered Mxene-Ti3C2

An ultrasonic-assisted and ultrasonic treatment technology is applied in the field of preparation of Mxene-Ti3C2 to achieve the effect of less by-products, speeding up the reaction process and improving the purity

Active Publication Date: 2017-11-07
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is no one-step method to complete Mxene-Ti in the prior art 3 C 2 preparation and layering

Method used

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  • Ultrasound-assistant preparation method of layered Mxene-Ti3C2
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  • Ultrasound-assistant preparation method of layered Mxene-Ti3C2

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Experimental program
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Effect test

Embodiment 1

[0041] 1) 5g Ti 3 AlC 2 -MAX phase ceramic powder is slowly added to 100mL of HF solution with a mass concentration of 49%, and then 100mL of dimethyl sulfoxide (DMSO) solution is added;

[0042] 2) Ultrasound (100% power and 45Hz frequency) at 50°C for 2h, then reacted in a magnetic stirrer in an oil bath at 50°C for 6h, this process was repeated 3 times, and the reaction time was 24h in total;

[0043] 3) After the reaction is over, divide the obtained solution into 6 parts and pour it into 6 centrifuge bottles of 350mL, add distilled water to 2 / 3, shake and shake, and centrifuge at 3000rpm for 5min, take the supernatant to measure the pH Pour out the supernatant after the value, and wash the precipitate with deionized water, shake it well and then centrifuge under the same conditions, repeat 6 times. Measure the pH of the final supernatant = 5.6, then wash the precipitate with absolute ethanol, shake and centrifuge, keep the same rotation speed and centrifugation time and...

Embodiment 2

[0046] 1) 5g Ti 3 AlC 2 -MAX phase ceramic powder is slowly added to 100mL of HF solution with a mass concentration of 49%, and then 100mL of dimethyl sulfoxide (DMSO) solution is added;

[0047] 2) Ultrasonic (power is 100% and frequency is 45Hz) at 50°C for 2h, then reacted in a magnetic stirrer in an oil bath at 50°C for 6h, this process was repeated 5 times, and the last time was reacted in a magnetic stirrer The time is 2h, and the total reaction time is 36h;

[0048] 3) After the reaction is over, divide the obtained solution into 6 parts and pour it into 6 centrifuge bottles of 350mL, add distilled water to 2 / 3, shake and shake, and centrifuge at 3000rpm for 5min, take the supernatant to measure the pH Pour out the supernatant after the value, and wash the precipitate with deionized water, shake it well and then centrifuge under the same conditions, repeat 6 times. Measure the pH of the final supernatant = 5.1, then wash the precipitate with absolute ethanol, shake a...

Embodiment 3

[0051] 1) 5g Ti 3 AlC 2 -MAX phase ceramic powder is slowly added to 100mL of HF solution with a mass concentration of 49%, and then 100mL of dimethyl sulfoxide (DMSO) solution is added;

[0052] 2) Ultrasonic (power 100% and frequency 45Hz) at 50°C for 2h, then reacted in a magnetic stirrer in an oil bath at 50°C for 6h, this process was repeated 6 times, and the total reaction time was 48h;

[0053] 3) After the reaction is over, divide the obtained solution into 6 parts and pour it into 6 centrifuge bottles of 350mL, add distilled water to 2 / 3, shake and shake, and centrifuge at 3000rpm for 5min, take the supernatant to measure the pH Pour out the supernatant after the value, and wash the precipitate with deionized water, shake it well and then centrifuge under the same conditions, repeat 6 times. Measure the pH of the final supernatant = 5.3, then wash the precipitate with absolute ethanol, shake and centrifuge, keep the same rotation speed and centrifugation time and re...

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Abstract

The invention relates to an ultrasound-assistant preparation method of layered Mxene-Ti3C2. The method comprises the following steps: (1) Ti3AlC2-MAX phase ceramic powder and an HF solution are mixed, and then dimethyl sulfoxide is added in order to obtain mixed liquor; (2) ultrasonic treatment of the mixed liquor is carried out, and after ultrasonic treatment is completed, a stirring reaction is carried out in an oil bath condition; ultrasonic treatment and the stirring reaction are alternatively and repeatedly carried out, and after the reaction ends, a middle solution is obtained; (3) washing and centrifugation of the middle solution are carried out by using deionized water till pH of supernatant is equal to 5-6; ethanol is used continuously in order to carry out washing and centrifugation, a sediment is obtained, drying treatment is carried out, and layered Mxene-Ti3C2 is obtained. Preparation and layering of Mxene-Ti3C2 are realized simultaneously.

Description

technical field [0001] The present invention relates to Mxene-Ti 3 C 2 The field of preparation, specifically relates to a kind of Mxene-Ti that utilizes ultrasound to assist in the preparation of layers 3 C 2 Methods. Background technique [0002] With the rapid development of nanomaterials, more and more nanomaterials have been discovered by research, such as the recently researched two-dimensional material graphene. Since the two-dimensional material graphene was successfully stripped from graphite in 2004, due to its very good Strength, flexibility, electrical conductivity, thermal conductivity, and optical properties, graphene has been greatly developed in the fields of physics, materials science, electronic information, computers, aerospace and other fields, and thus set off a research boom on two-dimensional materials. [0003] Mxene-Ti 3 C 2 As a new type of two-dimensional transition metal carbide, it has a similar sheet structure to graphene and has good elec...

Claims

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Application Information

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IPC IPC(8): C01B32/921
CPCC01P2002/72C01P2002/77C01P2004/03
Inventor 林道辉克里斯哈拉莫斯·拉贾威尔柯涛
Owner ZHEJIANG UNIV
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