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Insoluble magnetic cobalt/defective g-C3N4 composite catalyst and application thereof to catalytic Oxone wastewater degradation

A composite catalyst, g-c3n4 technology, applied in catalyst activation/preparation, physical/chemical process catalyst, light water/sewage treatment, etc., can solve problems such as ecological environment and human health hazards, and achieve good insolubility and good catalytic performance. Effect

Inactive Publication Date: 2018-05-04
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soluble cobalt salts will be discharged with water after the reaction is completed. However, cobalt is a heavy metal element that can be enriched in organisms and can accumulate in the human body through the food chain, so it has potential hazards to the ecological environment and human health.

Method used

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  • Insoluble magnetic cobalt/defective g-C3N4 composite catalyst and application thereof to catalytic Oxone wastewater degradation
  • Insoluble magnetic cobalt/defective g-C3N4 composite catalyst and application thereof to catalytic Oxone wastewater degradation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Take 2.703g FeCl 3 ·6H 2 O, 2.780g FeSO 4 ·7H 2 O and 6.033g CoSO 4 ·7H 2 O was dissolved in 20mL of deionized water. After the dissolution was complete, an orange-red mixed solution was obtained. The above mixed solution was heated to 60°C in a water bath and added dropwise to 45mL of ammonia solution with a molar concentration of 3mol / L. During the reaction, black Solids are generated. After the reaction, the turbid liquid containing a large amount of black solids is ultrasonicated at 60°C for 30 minutes under the ultrasonic conditions of 20KHz and 100W, and then cooled to room temperature. After the solid-liquid separation, the black solids are washed with deionized water until neutral, and then Filter, air-dry to obtain the magnetic cobalt catalyst that the mass percentage composition of cobalt is 11%;

[0017] (2) Take 0.7g of melamine, 0.07g of sodium hydroxide and 0.07g of magnetic cobalt catalyst and mix them evenly in a crucible, put the crucible in a ...

Embodiment 2

[0020] (1) Take 2.703g FeCl 3 ·6H 2 O, 2.780g FeSO 4 ·7H 2 O and 6.033g CoSO 4 ·7H2 O was dissolved in 20mL of deionized water. After the dissolution was complete, an orange-red mixed solution was obtained. The above mixed solution was heated to 60°C in a water bath and added dropwise to 45mL of ammonia solution with a molar concentration of 3mol / L. During the reaction, black Solids are generated. After the reaction, the turbid liquid containing a large amount of black solids is ultrasonicated at 60°C for 30 minutes under the ultrasonic conditions of 20KHz and 100W, and then cooled to room temperature. After the solid-liquid separation, the black solids are washed with deionized water until neutral, and then Filter, air-dry to obtain the magnetic cobalt catalyst that the mass percentage composition of cobalt is 11%;

[0021] (2) At room temperature, 10 mL of Oxone with a molar concentration of 0.01 mol / L was added to 50 mL of a levofloxacin solution with a mass concentrati...

Embodiment 3

[0023] (1) Take 2.703g FeCl 3 ·6H 2 O, 2.780g FeSO 4 ·7H 2 O and 6.033g CoSO 4 ·7H 2 O was dissolved in 20mL of deionized water. After the dissolution was complete, an orange-red mixed solution was obtained. The above mixed solution was heated to 60°C in a water bath and added dropwise to 45mL of ammonia solution with a molar concentration of 3mol / L. During the reaction, black Solids are generated. After the reaction, the turbid liquid containing a large amount of black solids is ultrasonicated at 60°C for 30 minutes under the ultrasonic conditions of 20KHz and 100W, and then cooled to room temperature. After the solid-liquid separation, the black solids are washed with deionized water until neutral, and then Filter, air-dry to obtain the magnetic cobalt catalyst that the mass percentage composition of cobalt is 11%;

[0024] (2) Put 0.1.77g of melamine, 0.177g of sodium hydroxide and 0.07g of magnetic cobalt catalyst into a crucible and mix evenly, put the crucible into ...

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Abstract

The invention discloses an insoluble magnetic cobalt / defective g-C3N4 composite catalyst and application thereof to catalytic Oxone wastewater degradation, and belongs to the technical field of composite catalytic material synthesis and organic wastewater catalytic degradation. The composite catalyst is characterized in that a preparation method of the insoluble magnetic cobalt / defective g-C3N4 composite catalyst concretely comprises the steps of preparation of magnetic cobalt catalysts with the cobalt mass percentage content being 11 percent, preparation of insoluble magnetic cobalt / defectiveg-C3N4 composite catalysts with the cobalt mass percentage content being 1.2 percent and the like. The insoluble magnetic cobalt / defective g-C3N4 composite catalyst can be used for efficiently catalyzing Oxone to degrade levofloxacin wastewater. The prepared insoluble magnetic cobalt / defective g-C3N4 composite catalyst has better infusibility in neutral environment; meanwhile, better catalytic performance is realized; certain photocatalytic performance is also realized; the insoluble magnetic cobalt / defective g-C3N4 composite catalyst can be applied to the degradation of nonbiodegradable organic pollutants.

Description

technical field [0001] The invention belongs to the technical field of synthesis of composite catalytic materials and catalytic degradation of organic waste water, in particular to an insoluble magnetic cobalt / defective g-C 3 N 4 Preparation method of composite catalyst and its application in catalytic Oxone degradation of levofloxacin wastewater. Background technique [0002] Levofloxacin is an antibiotic drug with optical activity among quinolones. It has obvious inhibitory effect on most Gram-positive bacteria and Gram-negative bacteria, and the effect is long-lasting. Therefore, levofloxacin has been widely used clinically. Due to their long half-lives, traditional water treatment techniques cannot effectively remove these drugs, so their potential harm to public health has attracted widespread attention. [0003] Oxone (2KHSO 5 ·KHSO 4 ·K 2 SO 4 ) is the trade name of potassium peroxysulfate complex salt, and its active substance is potassium monoperoxysulfate KH...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J37/03B01J37/34B01J37/08C02F1/30C02F101/34C02F101/36C02F101/38
CPCC02F1/30B01J27/24B01J37/031B01J37/082B01J37/343C02F2101/34C02F2101/36C02F2101/38B01J35/33B01J35/39
Inventor 皮运清唐艺玮李银玲冯珊珊李镁玲曹治国孙剑辉
Owner HENAN NORMAL UNIV
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