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Preparing method and application of core-shell structure Fe3O4@MIL(Fe) composite material

A composite material, core-shell structure technology, applied in nanotechnology for materials and surface science, chemical instruments and methods, alkali metal compounds, etc., can solve unsatisfactory catalytic effect, incomplete degradation of organic matter, utilization of oxidants problems such as low rate, to achieve the effect of easy promotion, easy acquisition and easy recycling

Inactive Publication Date: 2016-01-06
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has the advantages of being environmentally friendly, easy to magnetically separate, and cheap, but its catalytic effect is not satisfactory, and there are problems such as low catalytic activity, low oxidant utilization rate, and incomplete degradation of organic matter.

Method used

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  • Preparing method and application of core-shell structure Fe3O4@MIL(Fe) composite material
  • Preparing method and application of core-shell structure Fe3O4@MIL(Fe) composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation of MIL-101(Fe): ultrasonically disperse 0.206g of terephthalic acid in 15mL of DMF, then add 0.675g of FeCl 3 ·6H 2 O, magnetically stirred for 15 min, reacted in a polytetrafluoroethylene-lined autoclave at 110°C for 24h; cooled to room temperature, centrifuged, washed with water and ethanol, and finally vacuum-dried at 60°C for 24h.

[0029] (2) Core-shell structure Fe 3 o 4Preparation of MIL-101(Fe) composite material: ultrasonically disperse 100mgMIL-101(Fe) in 15mL of n-octanol, and then add 0.2mL of FeCl with a concentration of 0.12mol / L 3 Ethylene glycol solution, magnetically stirred for 6h, then packaged in a polytetrafluoroethylene-lined reactor, reacted at 200°C for 8h, cooled to room temperature, washed several times with ethanol and deionized water, and dried under vacuum at 60°C.

[0030] (3) Degradation of organic wastewater: the present invention uses the organic dye Acid Orange 7 as a probe molecule to evaluate the performance of the ...

Embodiment 2

[0033] (1) Preparation of MIL-100(Fe): ultrasonically disperse 0.4102g trimesic acid in 15mLH 2 O, then add 0.605gFeCl 3 ·6H 2 O, magnetically stirred for 15 min, reacted in a polytetrafluoroethylene-lined autoclave at 150°C for 15h; cooled to room temperature, centrifuged, washed with water and ethanol, and finally vacuum-dried at 60°C for 24h.

[0034] (2) Core-shell structure Fe 3 o 4 Preparation of MIL-100(Fe) composite material: ultrasonically disperse 100mgMIL-100(Fe) in 15mL of n-octanol, and then add 0.2mL of FeCl with a concentration of 0.022mol / L 3 Ethylene glycol solution, magnetically stirred for 6h, then packaged in a polytetrafluoroethylene-lined reactor, reacted at 200°C for 8h, cooled to room temperature, washed several times with ethanol and deionized water, and dried under vacuum at 60°C.

[0035] (3) Degradation of organic wastewater: same as in Example 1.

[0036] Add 10 mg of Fe to acid orange 7 dye wastewater 3 o 4 MIL-100(Fe), Fe 3 o 4 and MIL-1...

Embodiment 3

[0038] (1) Preparation of MIL-88B(Fe): 0.348g terephthalic acid was ultrasonically dispersed in 15mLDMF and 1.2mL2mol / LNaOH mixed solution, and then 1.212gFe(NO 3 ) 3 9H 2 O, magnetically stirred for 15 min, reacted in a polytetrafluoroethylene-lined autoclave at 100°C for 12h; cooled to room temperature, centrifuged, washed with water and ethanol, and finally vacuum-dried at 60°C for 24h.

[0039] (2) Core-shell structure Fe 3 o 4 Preparation of MIL-88B(Fe) composite material: ultrasonically disperse 100mgMIL-88B(Fe) in 15mL of n-octanol, and then add 0.2mL of FeCl with a concentration of 0.12mol / L 3 Ethylene glycol solution, magnetically stirred for 6h, then packaged in a polytetrafluoroethylene-lined reactor, reacted at 200°C for 8h, cooled to room temperature, washed several times with ethanol and deionized water, and dried under vacuum at 60°C.

[0040] (3) Degradation of organic wastewater: same as in Example 1.

[0041] Add 10 mg of Fe to acid orange 7 dye wastewat...

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Abstract

The invention discloses a preparing method and application of a core-shell structure Fe3O4@MIL(Fe) composite material. According to the method, MIL(Fe) is prepared firstly with the solvothermal method, then FeCl3 ethylene glycol solution is transferred into a pore canal of MIL(Fe), nanometer Fe3O4 is obtained in the pore canal with the solvothermal method through in situ formation, and then the core-shell structure Fe3O4@MIL(Fe) composite material is obtained. A catalyst is high in catalytic activity, environmentally friendly, easy to recover and capable of being used repeatedly. Furthermore, equipment adopted in the method is simple, operation is convenient, organic pollutants in water can be degraded efficiently within a wide pH range, and application prospects are great.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, in particular to a core-shell structure Fe 3 o 4 Preparation method and application of MIL (Fe) composite material. Background technique [0002] In recent years, based on sulfate free radicals (SO 4 ?· ) advanced oxidation technology is widely used in the treatment of organic wastewater, especially for the degradation of biologically refractory organic pollutants in wastewater. Persulfates include peroxodisulfates (S 2 o 8 2? , PDS) and permonosulfate (HSO 5 ? , PMS), usually under the action of ultraviolet light, heat, ultrasonic waves, transition metals, etc. to produce strong oxidizing SO 4 ?· . In these activation modes, transition metal ions (such as Co 2+ 、Cu 2+ , Fe 2+ and Ag + etc.) Activation is more widely used due to its low energy consumption and low cost. However, the catalytic activity of transition metal ions is greatly affected by the pH value, cannot be recycl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28B82Y40/00B82Y30/00B01J23/745C02F101/30
Inventor 岳馨馨国伟林李祥惠刘中华张琪颖王瑞芹刘华
Owner UNIV OF JINAN
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