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Copper ferrite spinel material as well as preparation method and application thereof

A technology of copper ferrite and spinel, applied in chemical instruments and methods, water/sludge/sewage treatment, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of large dosage of copper ferrite , the dissolution of metal copper ions and the poor reusability of materials, etc., to achieve the effect of stable crystal structure, good crystallization and uniform particle size

Active Publication Date: 2022-01-04
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current research on the copper ferrite persulfate system, there are still problems such as large dosage of copper ferrite, dissolution of metallic copper ions, and poor material reusability.

Method used

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  • Copper ferrite spinel material as well as preparation method and application thereof
  • Copper ferrite spinel material as well as preparation method and application thereof
  • Copper ferrite spinel material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of copper ferrite spinel material:

[0033] According to the chemical formula CuFe 2 o 4 The stoichiometric ratio of each element in the formula, respectively weighed raw materials: Fe(NO3) 3 9H 2 O: 4.04 g, Cu(NO 3 ) 2 ·3H 2 O: 1.28 grams, citric acid: 3.15 grams.

[0034] Cu(NO 3 ) 2 ·3H 2 O and Fe(NO3) 3 9H 2 Dissolve O in a flask filled with 100mL ultrapure water, and stir in a water bath at 60°C; dissolve citric acid powder in 100mL pure water, and add it dropwise to the salt solution with a separatory funnel, and the mixed solution continues to cool at 50°C to 60°C Stir in a water bath for 2h-4h; then adjust the temperature of the water bath to 80-90°C, continue stirring to evaporate water; transfer the obtained transparent sol into an oven, and dry at 100°C-105°C for 10-16h to obtain a gel; Transfer to a muffle furnace and calcinate for a certain period of time (rise temperature at 1°C / min from room temperature to 200°C, keep at 200°C for ...

Embodiment 2

[0038] The copper ferrite spinel material prepared in Example 1 was applied to the research on the removal of yellow orange II (AO7).

[0039] Test 1: Take 100 mL of Orange II solution with a concentration of 0.29 mM, add copper ferrite spinel material in an amount of 0.63 mM, and react at room temperature for 30 min.

[0040] Test 2: Take 100 mL of orange II solution with a concentration of 0.29 mM, add peroxymonosulfate in an amount of 0.98 mM, and react at room temperature for 30 min.

[0041] Test 3: Take 100mL of Orange II solution with a concentration of 0.29mM, add copper ferrite spinel material in an amount of 0.63mM, add peroxymonosulfate in an amount of 0.98mM, and react at room temperature for 30min.

[0042] Test 4: Take 100mL of orange II solution with a concentration of 0.29mM, add copper ferrite spinel material in an amount of 0.63mM, add persulfate in an amount of 0.98mM, add 2mM bicarbonate, and react at room temperature for 30min .

[0043] like image 3 S...

Embodiment 3

[0045] The peroxosulfate / bicarbonate / copper ferrite spinel material system was applied to the research of treating different organic pollutants.

[0046] Test 5: Take 100mL of Orange II solution with a concentration of 0.2mM, add copper ferrite spinel material in an amount of 0.15g / L, add peroxymonosulfate in an amount of 0.3g / L, and add 2mM bicarbonate, React at room temperature for 30 minutes.

[0047] Test 6: Take 100mL of rhodamine B solution with a concentration of 0.2mM, add copper ferrite spinel material in an amount of 0.15g / L, add peroxymonosulfate in an amount of 0.3g / L, and add 2mM bicarbonate , reacted at room temperature for 30min.

[0048] Test 7: Take 100mL of reactive brilliant blue solution with a concentration of 0.2mM, add copper ferrite spinel material in an amount of 0.15g / L, add peroxymonosulfate in an amount of 0.3g / L, and add 2mM bicarbonate , reacted at room temperature for 30min.

[0049] Test 8: Take 100mL of methyl orange solution with a concentr...

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Abstract

The invention provides a copper ferrite spinel material as well as a preparation method and application thereof, wherein the material is prepared by adopting an improved sol-gel method, and the obtained material is stable in crystal structure and good in particle uniformity and has the size of 10-20 nm by changing a mixing mode of citric acid and metal ions and improving a calcining procedure. The material is applied to treatment of organic pollutants in wastewater, is used as a catalyst and is combined with bicarbonate to activate persulfate, sulfate free radicals and hydroxyl free radicals can be quickly and continuously generated, and various refractory organic matters can be quickly decomposed by combining the molecular oxidation effect. Compared with the prior art, the preparation method provided by the invention is simple in process, low in production cost and suitable for large-scale production; and the method has the advantages of low cost of application technology, no pollution and high degradation efficiency, and the material has strong magnetism, is easy to separate and recover, can be recycled for multiple times, and has wide economic benefits and application prospects in the field of remediation of water bodies polluted by refractory organic pollutants.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a copper ferrite spinel material and a preparation method and application thereof. Background technique [0002] In recent years, with the rapid development of the national economy, a large number of artificially synthesized organic and inorganic pollutants have been discharged into water bodies, causing serious water pollution. Among them, the pollution of persistent refractory organic pollutants is particularly serious and difficult to solve, which has become a major problem in environmental governance and restoration. These organic pollutants stay in the environment for a long time, are not easily degraded by microorganisms, and are bioaccumulative. They will accumulate along the food chain and eventually endanger human health. Therefore, in the current situation, there is an urgent need for more efficient technologies to remove refractory organic pollutants in waste...

Claims

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Application Information

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IPC IPC(8): B01J23/745C02F1/72C02F101/30
CPCB01J23/745B01J23/005C02F1/725C02F2101/30Y02W10/37
Inventor 蔡纯刘洋帆周家恒柳玲玉陈雨张乐相
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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