ZnO/mesoporous C3N4 composite photocatalyst and preparation method thereof

A catalyst and composite light technology, applied in the field of photocatalytic material research, can solve the problems of reducing energy level matching and affecting the catalytic activity of visible light, so as to improve the utilization rate, excellent performance of simulating sunlight photocatalytic degradation of pollutants, and cheap raw materials Effect

Inactive Publication Date: 2015-03-25
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although such a preparation process is relatively simple, it cannot fully load ZnO to C 3 N 4 , which reduces the energy level matching between the two, which affects the improvement of visible light catalytic activity

Method used

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  • ZnO/mesoporous C3N4 composite photocatalyst and preparation method thereof
  • ZnO/mesoporous C3N4 composite photocatalyst and preparation method thereof
  • ZnO/mesoporous C3N4 composite photocatalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Weigh 0.025g of mpg-C 3 N 4 powder, added in 50ml ethylene glycol, ultrasonically dispersed for 0.5 hour, and then stirred for 1 hour; then weighed 0.6g of Zn(CH 3 COO) 2 .2H 2 O, ultrasonically dissolve into 60ml of ethylene glycol, add it to the above dispersion, and keep stirring for 0.5 hours; then weigh 0.219g of sodium hydroxide and dissolve it in 50ml of ethylene glycol, add it dropwise to the above mixed solution in, and continue to stir for 1 hour; then transfer the formed solution to a 200ml polytetrafluoroethylene-lined autoclave, and heat it at 160 degrees for 24 hours; after the product is centrifuged, washed and separated, it is dried in an oven for 24 hours. hours, the corresponding ZnO-loaded mesoporous mpg-C 3 N 4 Composite photocatalyst, labeled ZnO / mpg-C 3 N 4 (10wt.%).

Embodiment 2

[0027] Experimental procedure is identical with embodiment 1, and difference is that the mpg-C that takes by weighing 3 N 4 The powder is 0.095g. The corresponding ZnO-supported mesoporous mpg-C was obtained 3 N 4 Composite photocatalyst, labeled ZnO / mpg-C 3 N 4 (30wt.%).

Embodiment 3

[0029] Experimental procedure is identical with embodiment 1, and difference is that the mpg-C that takes by weighing 3 N 4 The powder was 0.222 g. The corresponding ZnO-supported mesoporous mpg-C was obtained 3 N 4 Composite photocatalyst, labeled ZnO / mpg-C 3 N 4 (50wt.%).

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Abstract

The invention relates to a ZnO loaded mesoporous mpg-C3N4 composite photocatalyst and a preparation method thereof. The method comprises the following steps: weighing mpg-C3N4 powder, ultrasonically dispersing the mpg-C3N4 powder into ethylene glycol, and stirring; weighing Zn(CH3COO) 2.2H2O, ultrasonically dissolving Zn(CH3COO)2.2H2O into ethylene glycol, adding the solution into the dispersion liquid, and stirring; weighing sodium hydroxide, dissolving the sodium hydroxide into ethylene glycol, adding the ethylene glycol solution into the formed solution and stirring; heating the finally-obtained solution in a solvent at a temperature of 160 DEG C for 24 hours; and centrifuging, washing and drying the obtained precipitate to obtain the ZnO loaded mesoporous mpg-C3N4 composite photocatalyst. The ZnO loaded mesoporous mpg-C3N4 composite photocatalyst provided by the invention has excellent pollutant catalytic degradation functions of visible light and simulated sunlight; the preparation method provided by the invention is cheap in raw materials and simple in process, thereby effectively reducing the product cost, expanding the light absorption range by the composition of the two components, improving the utilization rate of sunlight and having very high practical value and application prospect.

Description

technical field [0001] The present invention relates to a kind of ZnO / mesoporous carbon nitride (mpg-C 3 N 4 ) Composite photocatalyst and preparation method thereof belong to the technical field of photocatalytic material research. Background technique [0002] With the rapid development of modern industry, the problem of environmental pollution is becoming more and more serious, and it is particularly urgent to seek more economical and efficient environmental pollution control technologies. Compared with the traditional chemical oxidation method and high temperature incineration method, because the semiconductor photocatalytic technology can use cheap solar energy, it can completely degrade the pollutants in the air and water under normal temperature and pressure, and has no secondary pollution. Environmental governance technology. [0003] semiconductor material C 3 N 4 Because of its special semiconductor characteristics (band gap E g =2.7eV), has absorption in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26C02F1/30
Inventor 陈代梅王珂玮朱洪雷谢垚
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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