Two-dimensional composite photocatalyst namely h-BN/Ti3C2/TiO2, and preparation method and application thereof

A catalyst, composite light technology

Active Publication Date: 2019-11-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are relatively few synthetic methods of xylonic acid, and some reported methods even have certain limitations, such as cumbersome catalyst preparation process, harsh reaction conditions, etc.

Method used

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  • Two-dimensional composite photocatalyst namely h-BN/Ti3C2/TiO2, and preparation method and application thereof
  • Two-dimensional composite photocatalyst namely h-BN/Ti3C2/TiO2, and preparation method and application thereof
  • Two-dimensional composite photocatalyst namely h-BN/Ti3C2/TiO2, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Accurately weigh 1.0 g of LiF powder and add it to 30 mL of 9 mol / L hydrochloric acid solution, add magnetons, place the reaction system in a water bath, and keep the temperature at 0 o C, react at 500 r / min for 30 min; then weigh 1.0 gTi 3 AlC2 Slowly added to the above system, after continuing to react for 60 min under the reaction conditions, adjust the temperature of the water bath to 35 o C. After 24 hours of reaction, take out the reaction solution, add an appropriate amount of deionized water, centrifuge repeatedly, remove the supernatant, and obtain a precipitate that is multilayer Ti 3 C 2 ;

[0037] (2) The product obtained in step (1) was dispersed in deionized water, ultrasonically stripped for 8 h, and then the stripped dispersion was freeze-dried to obtain a few-layer Ti 3 C 2 ;

[0038] (3) Accurately weigh 0.1 g of the few-layer Ti obtained in step (2) 3 C 2 and 0.1 g h-BN were placed in a polytetrafluoroethylene liner containing 30 mL of deio...

Embodiment 2

[0041] LiF and Ti in step (1) 3 AlC 2 Consumption is all changed into 3.0 g, and others are with embodiment 1;

[0042] Step (3) few layers of Ti 3 C 2 and h-BN consumption are changed into 0.2 g, other with embodiment 1;

[0043] Steps (2), (4) are the same as in Example 1.

Embodiment 3

[0045] Change step (3) temperature to 200 o C, other with embodiment 1;

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PUM

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Abstract

The invention discloses a two-dimensional composite photocatalyst namely h-BN / Ti3C2 / TiO2, and a preparation method and an application thereof. The catalyst has a two-dimensional composite structure, wherein wafer-shaped h-BN is loaded on a Ti3C2 nanosheet; meanwhile, a TiO2 particle obtained by oxidation of Ti3C2 is located between the wafer-shaped h-BN and the Ti3C2 nanosheet. The preparation method for the catalyst provided by the invention is simple and highly-efficient and has easily-controllable reaction conditions. The catalyst provided by the invention has the advantages of high catalytic activity, good thermal stability, recyclability and the like, realizes simple and highly-efficient catalytic synthesis of xylosic acid, and has good application prospect.

Description

technical field [0001] The invention belongs to the technical field of catalysis and the field of xylose acid, in particular to a two-dimensional composite photocatalyst h-BN / Ti 3 C 2 / TiO 2 And its preparation method and application. Background technique [0002] With the continuous development of the world economy, human beings have an increasing demand for resources and energy. However, the traditional non-renewable resources such as oil and coal on the earth are becoming increasingly depleted, which requires people to fully utilize some sustainable resources that have not been efficiently utilized. Use to alleviate the earth's energy crisis. Biomass resources are abundant renewable resources on the earth, and their efficient utilization is of great significance to alleviate the global energy crisis. As an important biomass resource, hemicellulose has the advantages of wide sources and abundant reserves, but the current utilization status of hemicellulose is not optim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C07C51/295C07C59/105
CPCB01J27/24B01J35/004C07C51/295C07C59/105
Inventor 彭新文陈亮钟林新杨韵怡马纪亮李铭赛
Owner SOUTH CHINA UNIV OF TECH
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