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Mixed crystal TiO2/g-C3N4 nano hollow tube composite material and preparation method thereof

A composite material, g-c3n4 technology, applied in the field of preparation of high-efficiency photocatalysts, can solve the problems of difficult preparation of high specific surface, complicated preparation process, difficult to control the shape, etc., to achieve low cost, simple preparation process, good light The effect of catalytic activity

Active Publication Date: 2020-06-09
重庆郎岭新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at preparing rutile and anatase TiO in the prior art 2 / g -C 3 N 4 The preparation method of nano-hollow tube composites is complex, costly, and difficult to control the shape, especially it is difficult to prepare rutile and anatase mixed crystal TiO with high specific surface area. 2 / g -C 3 N 4 Due to the disadvantages of hollow nanotubes, a method for preparing one-dimensional g-C by thermal stress exfoliation is proposed. 3 N 4 hollow nanotube

Method used

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  • Mixed crystal TiO2/g-C3N4 nano hollow tube composite material and preparation method thereof
  • Mixed crystal TiO2/g-C3N4 nano hollow tube composite material and preparation method thereof
  • Mixed crystal TiO2/g-C3N4 nano hollow tube composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0014] (1) Weigh 10 g of urea, put it into a crucible with a lid, raise the temperature to 550° C. at a heating rate of 5° C. / min, and keep it warm for 4 hours. After cooling to room temperature, the product was collected. After grinding, heat up to 500°C at a heating rate of 5°C / min, keep it warm for 4 hours, and cool to room temperature to obtain g-C 3 N 4 nanotubes.

[0015] (2) Weigh 80 mg of g-C prepared in step (1) 3 N 4 The hollow nanotubes were ultrasonically dispersed in deionized water, and 0.02ml of TiCl was added 4 , stir evenly;

[0016] (3) Weigh 0.028g of hexamethylenetetramine and dissolve it in deionized water, pour the hexamethylenetetramine solution into the mixture obtained in step (2), after stirring evenly, transfer the mixture to the autoclave Put it in an oven at 180°C for 1 h, take it out, and after cooling, wash the product three times with distilled water and ethanol, and dry at 60°C to obtain rutile and anatase mixed crystal TiO 2 / g -C 3 N ...

Embodiment 2

[0018] (1) Weigh 10 g of urea, put it into a crucible with a lid, raise the temperature to 550° C. at a heating rate of 5° C. / min, and keep it warm for 4 hours. After cooling to room temperature, the product was collected. After grinding, heat up to 500°C at a heating rate of 5°C / min, keep it warm for 4 hours, and cool to room temperature to obtain g-C 3 N 4 nanotubes.

[0019] (2) Weigh 80 mg of g-C prepared in step (1) 3 N 4 The hollow nanotubes were ultrasonically dispersed in deionized water, and 0.01ml of TiCl was added 4 , stir evenly;

[0020] (3) Weigh 0.014g of hexamethylenetetramine and dissolve it in deionized water, pour the hexamethylenetetramine solution into the mixture obtained in step (2), after stirring evenly, transfer the mixture to the autoclave Put it in an oven at 180°C for 1 h, take it out, and after cooling, wash the product three times with distilled water and ethanol, and dry at 60°C to obtain rutile and anatase mixed crystal TiO 2 / g -C 3 N ...

Embodiment 3

[0022] (1) Weigh 10 g of urea, put it into a crucible with a lid, raise the temperature to 550° C. at a heating rate of 5° C. / min, and keep it warm for 4 hours. After cooling to room temperature, the product was collected. After grinding, heat up to 500°C at a heating rate of 5°C / min, keep it warm for 4 hours, and cool to room temperature to obtain g-C 3 N4 nanotubes.

[0023] (2) Weigh 80 mg of g-C prepared in step (1) 3 N 4 The hollow nanotubes were ultrasonically dispersed in deionized water, and 0.03ml of TiCl was added 4 , stir evenly;

[0024] (3) Weigh 0.042g of hexamethylenetetramine and dissolve it in deionized water, pour the hexamethylenetetramine solution into the mixture obtained in step (2), after stirring evenly, transfer the mixture to the autoclave Put it in an oven at 180°C for 1 h, take it out, and after cooling, wash the product three times with distilled water and ethanol, and dry at 60°C to obtain rutile and anatase mixed crystal TiO 2 / g -C 3 N 4...

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Abstract

The invention discloses a mixed crystal TiO2 / g-C3N4 nano hollow tube composite material and a preparation method thereof. The TiO2 mixed crystal / g-C3N4 nano hollow tube composite material disclosed bythe invention can be used as an efficient photocatalyst. Urea, titanium tetrachloride and hexamethylenetetramine are used as raw materials, g-C3N4 nano hollow tubes are obtained through a secondary roasting reaction, then the rutile and anatase type TiO2 mixed crystal / g-C3N4 nano hollow tube composite material is obtained through a hydrothermal reaction, and preparation and loading of the rutileand anatase type TiO2 mixed crystal are completed in one step. The preparation method has the advantages that the used precursors are cheap urea and inorganic salt titanium tetrachloride, the preparation process is simple, and the cost is low; and the rutile and anatase type mixed crystal TiO2 / g-C3N4 nano hollow tube photocatalyst prepared by the method has good photocatalytic activity in the aspects of hydrogen production by photolysis of water, degradation of organic pollutants in water, degradation of formaldehyde in air, bacteriostasis, antibiosis and the like.

Description

technical field [0001] The invention belongs to the field of new energy and environmental materials, and relates to a mixed crystal TiO 2 / g -C 3 N 4 Nano hollow tube composite material and preparation method thereof, specifically, relate to a kind of mixed crystal TiO by rutile and anatase type 2 Nanoparticles are uniformly dispersed in g-C 3 N 4 A method for preparing a high-efficiency photocatalyst compounded on the surface of nanometer hollow tubes. Background technique [0002] Visible light-responsive photocatalysis technology provides a promising technical path for clean and efficient use of solar energy, elimination of environmental pollution, and sustainable development, which has attracted widespread attention from scholars at home and abroad. Therefore, the development of high-efficiency, low-cost photocatalytic materials that respond to visible light has become a research hotspot in photocatalytic technology. g-C 3 N 4 The bandgap width of ~2.7eV can abso...

Claims

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Application Information

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IPC IPC(8): B01J27/24C01B3/04C02F1/30B01D53/86B01D53/72A61L2/08C08K9/12C08K3/22C08K7/24C09D5/16C09D7/61C02F101/30
CPCB01J27/24C02F1/30B01D53/8668C01B3/042A61L2/08C08K9/12C08K3/22C08K7/24C09D5/1687C09D7/61C09D7/70C02F2305/10C02F2101/30B01D2258/06C08K2201/011C08K2003/2241B01J35/39Y02E60/36
Inventor 王德宝王晓牟红宇宋彩霞
Owner 重庆郎岭新材料科技有限公司
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