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Quantum dot modified iron-cobalt oxide as well as preparation method and application thereof

A technology of quantum dots and oxides, applied in the field of environmental governance, can solve the problems of low catalytic efficiency and achieve the effects of high catalytic efficiency, low preparation cost and wide temperature range

Active Publication Date: 2020-09-04
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional metal oxide catalysts have the disadvantage of low catalytic efficiency

Method used

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  • Quantum dot modified iron-cobalt oxide as well as preparation method and application thereof
  • Quantum dot modified iron-cobalt oxide as well as preparation method and application thereof
  • Quantum dot modified iron-cobalt oxide as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A quantum dot modified iron-cobalt oxide of the present invention is mainly prepared by heat treatment after an oil bath reaction of an iron-cobalt-containing Prussian blue analogue, benzyl alcohol, an organic compound containing cobalt ions and ammonia, and the iron-cobalt-containing Prussian blue is similar The material is a metal-organic framework compound, and the quantum dot modified iron-cobalt oxide is mainly composed of iron-cobalt oxide and Co loaded on the iron-cobalt oxide. 3 o 4 Composition of quantum dots.

[0040] In this example, the iron-cobalt-containing Prussian blue analogue is prepared by coordination reaction between potassium ferricyanide solution and cobalt ion solution.

[0041] In this example, Co 3 o 4 The particle size of the quantum dots is 5nm-10nm.

[0042] A preparation method of the quantum dot modified iron cobalt oxide of the present embodiment, comprising the following steps:

[0043] S1. Mix 1 L of potassium ferricyanide solution...

Embodiment 2

[0050] An application of the quantum dot-modified iron-cobalt oxide of the present invention in the treatment of antibiotic wastewater is specifically to use the quantum-dot-modified iron-cobalt oxide prepared in Example 1 of the present invention to remove tetracycline in water, comprising the following steps:

[0051] Take a tetracycline solution with a volume of 1 L and a concentration of 50 mg / L, add 1.0 g of quantum dot-modified iron cobalt oxide and 1 g of sodium persulfate solid, mix well, adjust the initial pH value of the resulting mixture to 7, and place it at room temperature Under the persulfate activated oxidation reaction, the degradation of tetracycline is completed.

[0052] Control group 1: Take a tetracycline solution with a volume of 1 L and a concentration of 50 mg / L, add 1 g of sodium persulfate solid, mix well, adjust the initial pH value of the resulting mixture to 7, and perform persulfate activation and oxidation at room temperature reaction to complet...

Embodiment 3

[0058] Investigate the removal effect of the quantum dot-modified iron-cobalt oxide in different amounts of the present invention on tetracycline in the water body, adopt the quantum-dot-modified iron-cobalt oxide prepared in Example 1, comprising the following steps:

[0059] Get 5 parts of tetracycline solutions that have a volume of 1L and a concentration of 50mg / L, add respectively 0.5g, 1.0g, 2.0g, 3.0g and 4.0g of the quantum dot modified iron-cobalt oxides prepared in Example 1, and then each Add 1 g of sodium persulfate solid, mix well, adjust the initial pH value of the resulting mixed solution to 7, and carry out persulfate activation and oxidation reaction at room temperature to complete the degradation treatment of tetracycline.

[0060] After the persulfate activated oxidation reaction was carried out for 10min, 20min, 30min, 45min, 60min, 75min, 90min and 120min, samples were taken from the reaction system respectively, and the content of tetracycline in the solut...

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Abstract

The invention discloses a quantum dot modified iron-cobalt oxide as well as a preparation method and application thereof. The quantum dot modified iron-cobalt oxide is mainly prepared by performing oil bath reaction on an iron-cobalt-containing prussian blue analogue, benzyl alcohol, a cobalt ion-containing organic compound and ammonia water and then performing heat treatment. The preparation method comprises the following steps: coordinating a potassium ferricyanide solution and a cobalt ion solution to synthesize an iron-cobalt-containing prussian blue analogue, dispersing the iron-cobalt-containing prussian blue analogue in benzyl alcohol, adding and dissolving a cobalt ion-containing organic compound, mixing the obtained solution with ammonia water, carrying out oil bath reaction, andcarrying out heat treatment to obtain the product. The quantum dot modified iron-cobalt oxide is good in dispersity, large in specific surface area, multiple in catalytic sites, high in catalytic efficiency, good in magnetism, easy to separate and recycle, simple and convenient in preparation process, low in cost, environmentally friendly, capable of being used for treating antibiotic wastewater,high in removal efficiency, thorough in removal effect, free of secondary pollution and good in application prospect.

Description

technical field [0001] The invention belongs to the field of environmental governance, and relates to a quantum dot modified iron-cobalt oxide and a preparation method and application thereof. Background technique [0002] Antibiotics are a class of secondary metabolites with anti-pathogenic or other activities produced by microorganisms (including bacteria, fungi, actinomycetes) or higher animals and plants in the course of life. Chemicals necessary for the normal developmental function of cells. Antibiotics are widely used because of their advantages such as easy to use, stable chemical properties, broad antibacterial spectrum, low price, low toxicity, and wide application. However, antibiotics cannot be completely absorbed by organisms after use, and most of them are discharged into water bodies and soil environments in the form of prototypes or metabolites (such as conjugated states, hydrolysates, etc.) with urine and feces. Because antibiotic pollutants are not easily...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J35/10C02F1/72C02F101/38C02F103/34
CPCB01J23/75C02F1/725C02F2101/38C02F2103/343B01J35/394B01J35/61
Inventor 刘洋刘智峰程敏邵彬彬梁清华张魏吴婷罗崧豪彭赞潘园周成赟汪文军
Owner HUNAN UNIV
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