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Method and product of in-situ synthetic TiO2@Ti3C2 by using dimethylsulfoxide intercalated and layered Ti3C2

A technology of in-situ synthesis of dimethyl sulfoxide, applied in the field of preparation of Ti3C2, can solve the problems of poor catalytic performance, achieve the effect of increasing interlayer spacing, improving purity and crystallinity, and facilitating catalytic degradation

Inactive Publication Date: 2019-01-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to bulk Mxene-Ti 3 C 2 The layer spacing is relatively small, Ti 3 C 2 Only limited TiO on the surface after heat treatment 2 resulting in poor catalytic performance

Method used

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  • Method and product of in-situ synthetic TiO2@Ti3C2 by using dimethylsulfoxide intercalated and layered Ti3C2
  • Method and product of in-situ synthetic TiO2@Ti3C2 by using dimethylsulfoxide intercalated and layered Ti3C2
  • Method and product of in-situ synthetic TiO2@Ti3C2 by using dimethylsulfoxide intercalated and layered Ti3C2

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1) 15g Ti 3 AlC 2 -MAX phase ceramic powder was slowly added to 300mL HF solution with a mass concentration of 49%, and reacted for 36h under the condition of an oil bath at 50°C in a magnetic stirrer;

[0048] 2) After the reaction, the obtained solution was centrifuged at 3000 rpm for 5 minutes, the supernatant was poured out, and the precipitate was washed with deionized water, shaken and then centrifuged under the same conditions, repeated 6 times. The pH of the final supernatant was measured to be between 5 and 6, and then the precipitate was washed with absolute ethanol, centrifuged after shaking, and kept at the same speed and centrifugation time, repeated twice, and after centrifugation, the resulting solution was suction filtered to obtain a precipitate, and the The resulting precipitate was vacuum dried at 60°C for 24 hours to obtain Mxene-Ti 3 C 2 Material;

[0049] 3) the Mxene-Ti obtained in step 2) 3 C 2 The material and dimethyl sulfoxide were mixed...

Embodiment 2

[0053] The preparation process refers to the process in Example 1. The difference is that the final temperature maintained in step 5) is 320° C. for 1 hour. After the program ends, natural cooling is adopted. When the temperature drops to room temperature, the sample is taken out to obtain TiO 2 @Ti 3 C 2 Material.

Embodiment 3

[0055] The preparation process refers to the process in Example 1. The difference is that the final temperature maintained in step 5) is 340 ° C for 1 h. After the program ends, natural cooling is adopted. When the temperature drops to room temperature, the sample is taken out to obtain TiO 2 @Ti 3 C 2 Material.

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Abstract

The invention relates to a method and product of in-situ synthetic TiO2@Ti3C2 by using dimethylsulfoxide intercalated and layered Ti3C2. The synthetic method comprises the following steps: 1) enablingTi3AlC2-MAX-phase ceramic powder to be dispersed in HF solution for etching, to obtain Mxene-Ti3C2; 2) enabling the Mxene-Ti3C2 to be dispersed in dimethylsulfoxide for performing dimethylsulfoxide intercalation, to obtain dimethylsulfoxide intercalated Ti3C2; 3) enabling the dimethylsulfoxide intercalated Ti3C2 to be dispersed in water, performing ultrasonic treatment in an argon atmosphere, after drying, to obtain dimethylsulfoxide intercalated and layered Ti3C2; and 4) performing in-situ oxidation on the dimethylsulfoxide intercalated and layered Ti3C2 in an oxygen condition, to obtain TiO2@Ti3C2. The method is capable of improving an interlayer spacing distance of the Mxene-Ti3C2 by using the dimethylsulfoxide and the ultrasonic treatment, providing more attachment sites for the generated TiO2, and more advantageously performing catalytic degradation on a pollutant.

Description

technical field [0001] The present invention relates to Ti 3 C 2 The field of preparation, specifically related to a Ti 3 C 2 In situ synthesis of TiO 2 @Ti 3 C 2 methods and products. Background technique [0002] In 2011, Professor Yury Gogotsi and Professor Michel W.Barsoum from Drexel University in the United States discovered a new type of two-dimensional structure nanomaterial - two-dimensional transition metal carbide or carbonitride, which It has a layered structure similar to graphene, has good electrical conductivity and strong charge storage capacity, and has good application prospects in Li batteries. [0003] Due to its excellent photochemical properties, such as: photochemical stability, thermochemical stability, good dispersion and weather resistance, nano-titanium dioxide is widely used in cosmetics, functional fibers, plastics, coatings, paints and other fields. In the process of environmental pollution restoration , can also be used as a photocataly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22
CPCB01J27/22
Inventor 林道辉柯涛
Owner ZHEJIANG UNIV
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