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Iron-based carbon-nitrogen compound catalytic material for efficiently treating organic wastewater and preparation method thereof

A technology of iron-based carbon-nitrogen compounds and catalytic materials, which is applied in the field of environmental governance, can solve the problems that affect the degradation of organic pollutants in the catalytic system, low graphite carbon and graphite nitrogen content, and limit electron transfer rates, etc., to achieve good reusability, High catalytic activity and mild reaction conditions

Pending Publication Date: 2020-06-30
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current study, the content of graphitic carbon and graphitic nitrogen in heterogeneous iron-based catalytic materials supported by metal-organic framework materials is generally low, which limits their electron transfer rate in the catalytic system, thereby affecting the catalytic The ability of the system to degrade organic pollutants makes the catalytic degradation time longer

Method used

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  • Iron-based carbon-nitrogen compound catalytic material for efficiently treating organic wastewater and preparation method thereof
  • Iron-based carbon-nitrogen compound catalytic material for efficiently treating organic wastewater and preparation method thereof
  • Iron-based carbon-nitrogen compound catalytic material for efficiently treating organic wastewater and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] Dissolve 9 μmol of zinc nitrate hexahydrate in 90 mL of methanol to obtain solution A, dissolve 36 μmol of 2-methylimidazole in 30 mL of methanol to obtain solution B, mix A and B, react at 25°C for 24 hours, wash with methanol three times, and wash The final solid was dried to obtain a metal-organic framework material; 4.95 mmol ferric nitrate nonahydrate and 0.5 g metal-organic framework material were dispersed in 50 mL of absolute ethanol to obtain a mixed solution, which was reacted at 25 ° C for 24 hours and washed with ethanol 3 times, the washed solid was dried to obtain the precursor powder; the precursor powder was transferred to the crucible, and under the protection of argon, it was calcined in a tube furnace at 800°C for 2 hours, and naturally cooled to room temperature to obtain the iron-based carbon Nitrogen compound catalytic materials. SEM, TEM and Mapping diagrams of iron-based carbonitride catalytic materials (attached figure 1 ) indicates that the ma...

Embodiment 2-5

[0032] Using ferric nitrate nonahydrate, cobalt nitrate hexahydrate, nickel nitrate hexahydrate, copper nitrate hydrate compound to replace the zinc nitrate compound hexahydrate in Example 1, and react with 2-methylimidazole compound to obtain the corresponding metal organic framework material, Other condition steps are consistent with embodiment 1.

Embodiment 6

[0034] Dissolve 9 μmol of zinc nitrate hexahydrate in 90 mL of methanol to obtain solution A, dissolve 36 μmol of 2-methylimidazole in 30 mL of methanol to obtain solution B, mix A and B, react at 25°C for 24 hours, wash with methanol three times, and wash The final solid was dried to obtain a metal-organic framework material; 4.95mmol ferric chloride hexahydrate and 0.5g metal-organic framework material were dispersed in 50mL of absolute ethanol to obtain a mixed solution, which was reacted at 25°C for 24 hours and then washed with ethanol Wash 3 times, dry the washed solid to obtain the precursor powder; transfer the precursor powder to the crucible, under the protection of argon, calcinate in a tube furnace at 800°C for 2 hours, and cool naturally to room temperature to obtain the iron-based Carbonitride Catalytic Materials.

[0035] Application of iron-based carbonitride catalytic materials to degrade organic pollutants: add 60 mg of iron-based carbonitride catalytic materia...

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Abstract

The invention provides an iron-based carbon-nitrogen compound catalytic material for efficiently treating organic wastewater and a preparation method of the iron-based carbon-nitrogen compound catalytic material. The invention belongs to the technical field of environmental governance. The method comprises the following steps: under the condition that the pH value is equal to 5 to 10, the iron-based carbon-nitrogen compound catalytic material prepared by the invention can efficiently activate a peroxide to generate active oxygen species so as to realize effective degradation of organic pollutants such as dyes, phenols and antibiotics in wastewater, and the iron-based carbon-nitrogen compound in the system is obtained by calcining in a tubular furnace after ferric ions are fully adsorbed bya metal organic framework compound; the catalytic material disclosed by the invention has a microstructure in which carbon nanotubes penetrate through iron carbide and a zero-valent iron nanoparticle-loaded carbon-nitrogen compound framework; the contents of graphite carbon and graphite nitrogen are very high, the efficiency of catalytically oxidizing and degrading organic pollutants is improved,and the catalytic system has the advantages of high catalytic efficiency, good stability, environmental friendliness and the like, and has a wide application prospect in the field of environmental governance.

Description

technical field [0001] The invention relates to an iron-based carbon-nitrogen compound catalytic material for efficiently treating organic wastewater and a preparation method thereof, belonging to the technical field of environmental treatment. Background technique [0002] Organic pollutants in water, such as dyes, phenols, and antibiotics, have potential hazards to the ecological environment and human health due to their bioaccumulation, long-term hazards, and refractory biodegradability. Therefore, how to efficiently remove organic pollutants in wastewater is a difficult and hot spot in environmental governance at home and abroad. Due to the advantages of mild reaction conditions, continuous operation, and fast degradation rate of organic pollutants in water, advanced oxidation technology has become one of the most promising wastewater treatment methods today. Advanced oxidation technology produces active species with strong oxidation ability through the reaction of cata...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/00B01J37/08C02F1/72C02F101/30C02F101/34C02F101/36C02F101/38
CPCB01J27/24B01J37/086C02F1/722C02F1/725C02F2101/308C02F2101/345C02F2101/36C02F2101/38C02F2101/40B01J35/33
Inventor 姚玉元王文涛沈卓
Owner ZHEJIANG SCI-TECH UNIV
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