Bimetal supported magnetic visible-light composite catalytic material, and preparation method and application thereof

A composite catalytic material, catalytic material technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc. Small specific surface area, etc., to achieve the effect of large adsorption capacity, good load stability, and high specific surface area

Active Publication Date: 2019-01-15
TAIZHOU VOCATIONAL & TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it only uses single metal graphite phase carbon nitride, and it is directly mixed with the prepared graphite phase carbon nitride and metal salt, and its loading effect is poor, and it cannot effectively solve the above-mentioned existence. Electronic holes are easy to recombine, and the specific surface area is small. At the same time, this kind of catalyst is not easy to separate, which affects the industrial application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 15g urea and dissolve it in 50mL water, add 0.4g Fe 3 o 4 , sonicated for 4 hours to make Fe 3 o 4 Disperse evenly, heat slowly to volatilize the solvent until half-dry, then put it into an oven and control the temperature at 70°C for 24 hours, then put the obtained mixture powder into a tube furnace, under the protection of nitrogen, with each Raise the temperature at a rate of 5°C per minute to 550°C for 3 hours to obtain Fe 3 o 4 -g -C 3 N 4 , and Fe 3 o 4 -g -C 3 N 4 with 0.5g Fe(NO 3 ) 3 , 0.5g ZrCl 4 , 0.5g terephthalic acid was dissolved in 48mL DMF, ultrasonically dispersed evenly, in a programmed temperature rise furnace, the temperature was raised and controlled at 100°C for 24 hours to obtain a bimetallic supported magnetic visible light composite catalytic material Fe 3 o 4 -g -C 3 N 4 @Fe / Zr-MOF 3.0g. Based on the mass of the carrier Fe / Zr-MOF, Fe 3 o 4 The doping amount is 8%, g-C 3 N 4 The load capacity is 120%.

Embodiment 2

[0030] Weigh 15g urea and dissolve it in 50mL water, add 0.4g Fe 3 o 4 , sonicated for 4 hours to make Fe 3 o 4 Disperse evenly, heat slowly to volatilize the solvent until half-dry, put the mixture powder into the tube furnace after putting it into an oven and control the temperature at 80°C for 20 hours Calcined at a rate of 5°C to 600°C for 4 hours to obtain Fe 3 o 4 -g -C 3 N 4 , the Fe 3 o 4 -g -C 3 N 4 with 0.25g Fe(NO 3 ) 3 , 0.5gZrCl 4 , 0.5g of terephthalic acid was dissolved in 50mL of DMF, ultrasonically dispersed evenly, in a temperature-programmed furnace, the temperature was controlled at 150°C and heated for 20 hours to obtain a bimetallic-loaded magnetic-visible light composite catalytic material Fe 3 o 4 -g -C 3 N 4 @Fe / Zr-MOF3.2g. Based on the mass of the carrier Fe / Zr-MOF, Fe 3 o 4 The doping amount is 7.8%, g-C 3 N 4 The loading capacity is 125%.

Embodiment 3

[0032] Weigh 15g urea and dissolve it in 50mL ethanol, add 0.4g Fe 3 o 4 , sonicated for 3 hours to make Fe 3 o 4 Fully disperse and evenly, then heat slowly to make the volatile solvent semi-dry, then put it into the oven and control the temperature at 80°C for 20 hours, then put the obtained mixture powder into the tube furnace, under nitrogen Under protection, the temperature was raised to 450°C at a rate of 10°C per minute and calcined for 4 hours to obtain Fe 3 o 4 -g -C 3 N 4 , and then the obtained Fe 3 o 4 -g -C 3 N 4 with 0.5g Fe(NO 3 ) 3 , 1.0g ZrCl 4 Dissolve 1.0g of terephthalic acid in 50mL of anhydrous methanol, disperse evenly by ultrasonic, and heat in a temperature-programmed furnace at 200°C for 15 hours to obtain a bimetallic-loaded magnetic-visible light composite catalytic material Fe 3 o 4 -g -C 3 N 4 @Fe / Zr-MOF3.8g. Based on the mass of the carrier Fe / Zr-MOF, Fe 3 o 4 The doping amount is 6.0%, g-C 3 N 4 The loading amount is 105%. ...

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Abstract

The invention relates to a bimetal supported magnetic visible-light composite catalytic material, and a preparation method and application thereof, belonging to the technical field of photocatalytic degradation. The invention provides the bimetal supported magnetic visible-light composite catalytic material, and the preparation method and application thereof to overcome problems in realization ofboth high catalytic activity and easy recoverability. The visible-light composite catalytic material comprises Fe/Zr-MOF, Fe3O4 and g-C3N4. Fe3O4 is doped into g-C3N4 to form Fe3O4-g-C3N4; and Fe/Zr-MOF is used as a carrier. The method comprises the following steps: adding urea and Fe3O4 into a solvent, carrying out dispersion and mixing, and performing desolventization and drying; then performingcalcining at a high temperature to obtain Fe3O4-g-C3N4; and adding Fe3O4-g-C3N4, an iron source, a zirconium source and an organic ligand into a water-soluble solvent and performing sintering. The composite catalytic material can be used for catalytic degradation of organic pollutants, is easy to recover and has high catalytic activity.

Description

technical field [0001] The invention relates to a bimetallic-loaded magnetic visible light composite catalytic material and its preparation method and application, belonging to the technical field of photocatalytic degradation. Background technique [0002] The traditional sewage treatment methods mainly include physicochemical treatment and biochemical treatment. The application of such methods has greatly promoted sewage treatment and environmental improvement. However, the above methods have strong selectivity for the target treatment and have a narrow application range. , there are also disadvantages such as large energy consumption in practical applications. Therefore, the development of sewage treatment technology with high efficiency, low consumption, wide application range and deep degradation of organic pollutants has become a hot spot of social concern. [0003] Photocatalytic oxidation technology uses photocatalysts to completely convert various refractory organi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38B01J35/10C02F1/30C02F1/72C02F101/30
CPCB01J31/38B01J35/0033B01J35/004B01J35/10C02F1/30C02F1/725C02F2101/30
Inventor 陶雪芬张明涛金银秀王玉新刘永丽章颖
Owner TAIZHOU VOCATIONAL & TECHN COLLEGE
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