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Mesoporous Fe-based MOF@AgI high-efficiency composite visible light photocatalysis material, and preparation method and application thereof

A photocatalytic material and visible light technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., to increase specific surface area, increase absorption rate, and enhance visible light Effect of photocatalytic degradation of organic dye activity

Active Publication Date: 2017-08-04
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a mesoporous Fe-based MOF@AgI high-efficiency composite visible light photocatalyst and its preparation method and application to overcome the defects of a single catalytic material and improve the degradation of organic pollutants through the separation of photogenerated charges promoted by the composite. Such as the photocatalytic effect of Rhodamine B

Method used

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  • Mesoporous Fe-based MOF@AgI high-efficiency composite visible light photocatalysis material, and preparation method and application thereof
  • Mesoporous Fe-based MOF@AgI high-efficiency composite visible light photocatalysis material, and preparation method and application thereof
  • Mesoporous Fe-based MOF@AgI high-efficiency composite visible light photocatalysis material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This example prepares mesoporous Fe-MIL-88B-NH according to the following steps 2 @AgI efficient composite visible light photocatalytic material:

[0034] 1. Preparation of polystyrene template

[0035] Dissolve 2.040g of stabilizer polyvinylpyrrolidone in 60.147g of absolute ethanol, transfer the resulting solution into a three-necked flask, stir for 0.5h under nitrogen protection and a constant temperature of 60°C, and then dissolve 0.260g of azobisiso Butyronitrile and 25.214g of styrene, which was sealed and stored in closed light after vacuum distillation at 60°C, were added to the above system, and then 9.523g of deionized water was added to the system, the temperature was raised to 70°C, and the temperature was reacted for 12 hours. The obtained product was cooled to Centrifuge at room temperature at a speed of 6000 r / min, wash twice with ethanol, and dry under vacuum at 60° C. to obtain white polystyrene template powder.

[0036] 2. Sulfonation of polystyrene ...

Embodiment 2

[0046] This embodiment prepares Fe-MIL-88B-NH in the same manner as in Example 1 2 @AgI high-efficiency composite visible light photocatalytic material, the only difference is: AgNO in step 4 3 The volume of the solution and the KI solution was changed to 7.37mL and 5.65mL respectively, and the resulting product Fe-MIL-88B-NH 2 The photocatalytic properties of @AgI(2:1) are as follows image 3 shown.

Embodiment 3

[0048] This embodiment prepares Fe-MIL-88B-NH in the same manner as in Example 1 2 @AgI high-efficiency composite visible light photocatalytic material, the only difference is: AgNO in step 4 3 The volume of the solution and the KI solution was changed to 22.0mL and 17.0mL respectively, and the resulting product Fe-MIL-88B-NH 2 The photocatalytic performance of @AgI(2:3) as image 3 shown.

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Abstract

The invention discloses a mesoporous Fe-based MOF@AgI high-efficiency composite visible light photocatalysis material, and a preparation method and an application thereof. The photocatalysis material is obtained through loading AgI particles on the surface and the internal of a mesoporous microsphere Fe-MIL-88B-NH2MOF material. Sulfonated polystyrene microspheres are synthesized through a dispersion polymerization technology, and are adopted as a template to synthesize the mesoporous microsphere Fe-MIL-88B-NH2MOF material, and the AgI parts are loaded on the mesoporous microsphere Fe-MIL-88B-NH2MOF material to obtain the target product. In the composite material, the mesoporous microsphere Fe-MIL-88B-NH2MOF material has large adsorption capacity, and the AgI particles have strong photocatalytic performance, so the binary photocatalysts synthesized through combining the advantages of above two materials has substantially enhanced organic dye visible light photocatalytic degradation activity under the synergistic action of composite promoted photogenerated charge separation, and has a wide application prospect in the field of photocatalytic environment purification.

Description

technical field [0001] The invention belongs to the fields of material preparation, visible light photocatalysis technology and environmental protection, and specifically relates to the preparation of a binary high-efficiency composite photocatalyst Fe-based MOF@AgI and its application in catalytically degrading organic pollutants in water under visible light. Background technique [0002] Today's energy shortages and environmental pollution have attracted more and more attention, and the sustainable development of human society is facing enormous challenges. Photocatalytic technology is a new type of environmental protection and energy technology with broad application prospects. It has the advantages of high processing efficiency, simple process equipment, long cycle life, easy control of operating conditions, non-selective degradation of organic pollutants, green and pollution-free, etc. Therefore, it is an ideal way to solve energy and environmental problems. [0003] A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28C02F1/28C02F1/30C02F101/30
CPCC02F1/288C02F1/30B01J31/28C02F2101/308C02F2305/10B01J35/51B01J35/39
Inventor 刘雪霆王芳卢叶婧祎梁俊燊孙冬文侯鑫赵明
Owner HEFEI UNIV OF TECH
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