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Nano-confinement zero-valent iron@spindle type porous carbon catalytic oxidation water treatment method

A nano-confinement and catalytic oxidation technology, which is applied in the field of nano-materials and water treatment, can solve the problems of easy damage to the metal frame structure and high use temperature, and achieve the effect of wide pH range, low usage, and inhibition of clusters

Active Publication Date: 2018-11-06
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, carbon-based metal-wrapped composite materials can be prepared by calcining MOFs at high temperature, but the use temperature is high, and the structure of the original metal frame is easy to be destroyed.

Method used

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  • Nano-confinement zero-valent iron@spindle type porous carbon catalytic oxidation water treatment method
  • Nano-confinement zero-valent iron@spindle type porous carbon catalytic oxidation water treatment method
  • Nano-confinement zero-valent iron@spindle type porous carbon catalytic oxidation water treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 Method for preparing nano-confined zero-valent iron@spindle-type porous carbon

[0025] Take 10g of urea in an alumina crucible with a cover, place it in a muffle furnace, raise it from room temperature to 550°C at a heating rate of 2°C / min, keep it at this temperature for 4h, and cool it down to room temperature naturally block g-C 3 N 4 , then block the g-C 3 N 4 Grind into powder; 0.674g FeCl 3 ·6H 2 O, 0.415g 2-aminoterephthalic acid, 56mL N,N-dimethylformamide were added to the beaker, and stirred at room temperature to a transparent solution; take the synthesized g-C 3 N 4 Take 280 mg and add it to the solution under stirring, ultrasonicate it for 30 minutes, then stir at room temperature for 30 minutes to obtain a suspension; transfer the suspension to a high-pressure reactor with a polytetrafluoroethylene liner, seal it with a stainless steel shell Put it in an oven at 443K for 24 hours; cool slowly to room temperature, centrifuge the mixture to...

Embodiment 2

[0027]The nano-confined zero-valent iron@spindle-shaped porous carbon material prepared in Example 2 is used as a catalyst to remove organic pollutants in water

[0028] Adopt 250mL beaker as reactor, dispose 200mL reaction solution, adjust solution pH with 0.1M NaOH to be 7.0, wherein catalyst dosage is 50mg / L, potassium persulfate concentration is 0.65mM, the concentration of organic pollutant benzocaine It was 10mg / L, and the reaction was carried out with sufficient stirring at room temperature for 1h.

[0029] The nano-confined zero-valent iron@spindle-shaped porous carbon material activated persulfate in this embodiment can effectively oxidize and degrade benzocaine in water, and the benzocaine is basically completely removed after 1 hour of reaction. Depend on image 3 It can be seen that the effect of activated persulfate degrading pollutants by carbon nitride alone is not good, and the catalytic effect of activated persulfate degraded by a single metal organic framewo...

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Abstract

The invention discloses a nano-confinement zero-valent iron@spindle type porous carbon catalytic oxidation water treatment method. In-situ coupling of graphite phase carbon nitride (g-C3N4) with a metal-organic framework enhances the confinement effect of the metal-organic framework on the basis of retaining the original framework structure. Nano-confinement zero-valent iron@spindle type porous carbon can be used as a catalytic oxidation water treatment catalyst to activate monopersulfate, peroxodisulfate and hydrogen peroxide in order to achieve efficient degradation of non-degradable organicpollutants in water, and the catalyst is easy to recover, and can be reused. The catalyst has a small use amount and a short reaction time. The method has the advantages of simplicity and conveniencein operation, realization of uniform dispersion of nano-iron particles in the carbon frame, and good application prospect in the field of catalytic oxidation water treatment.

Description

technical field [0001] The invention relates to the technical field of nanomaterials and water treatment, in particular to a nano-confined zero-valent iron@spindle-type porous carbon catalytic oxidation water treatment method. Background technique [0002] With the development of modern industry and agriculture, a large number of artificially synthesized organic substances, such as personal skin care products, antibiotics, pesticides, dyes, etc., are directly discharged into the environment, causing water pollution. These substances have attracted widespread attention because of their stable chemical structure, refractory biodegradation, long-term existence in nature, and potential biotoxicity to humans and animals. For these refractory pollutants, it is extremely necessary to effectively treat the sewage containing these pollutants before entering the environment. There are many methods for dealing with organic pollutants, such as physical (physical adsorption, flocculatio...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/02B01J37/08C02F1/72C02F101/30
CPCC02F1/725B01J27/24B01J37/082B01J37/086C02F2101/30C02F2305/023C02F2305/02B01J35/394B01J35/393B01J35/33B01J35/50
Inventor 齐飞刘超张钰婷王一平
Owner BEIJING FORESTRY UNIVERSITY
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