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Novel application of manganese nodule and preparation method of layered intercalated ferrite composite material

A technology of composite materials and manganese nodules, which is applied in the field of layered intercalated ferrite composite materials and its preparation, can solve the problems of complex nano-ferrite technology, reduced performance of nanoparticles, and high cost, and achieve convenient and suppressed process flow. Reunion, source-rich effects

Inactive Publication Date: 2018-11-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Preparation of nanoferrite technology is complicated and expensive; in addition, the agglomeration effect of nanoparticles will lead to its performance degradation

Method used

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Examples

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Effect test

preparation example Construction

[0028] A preparation method of the layered intercalation ferrite composite material, the steps are as follows:

[0029] The first step is to pre-treat the oceanic manganese nodules. The massive manganese nodules are crushed, and the powdered manganese nodules obtained by grinding are easier to carry out the next reaction;

[0030] The second step is to extract layered minerals from the raw manganese nodules. A strong oxidant for preparing layered minerals is used to corrode and oxidize impurity minerals in manganese nodules under high-temperature calcination, and provide potassium ions to exchange sodium ions in manganese nodules; after persulfate reaction, oxides or A large number of hydroxides are dissolved to produce relatively pure layered minerals;

[0031] The third step is to prepare the ferrite precursor. Use chloride or nitrate to react with oleate to form a new oleate mixture;

[0032] The fourth step is to prepare layered intercalated ferrite composites prepared...

Embodiment 1

[0035] 1) Soak the raw oceanic manganese nodules in simulated seawater for 7 days, then crush and grind them. Sonicate for 60 min to fully disperse, and centrifuge at 15,000 rpm for 30 min to collect the lower granular precipitate and dry at 150 °C for 48 h.

[0036] 2) Mix the treated manganese nodules with a certain amount of potassium permanganate at a mass ratio of 10:1, add a small amount of oleic acid to grind them evenly, and calcinate the mixture at 1500 °C for 12 h. Put the calcined product into an Erlenmeyer flask filled with 2 mol / L ammonium persulfate solution, and stir for 120 min. After the reaction, filter and wash, and keep the filter residue at 150 °C for 24 h to obtain layered minerals.

[0037] 3) Mix ferric chloride, manganese chloride and sodium oleate at a mass ratio of 0.1:0.1:1, and add to 100 mL of water, 100 mL of absolute ethanol, and 100 mL of n-hexane. The mixture was kept at reflux at 70 °C for 12 h. After the reaction was completed, the mixtur...

Embodiment 2

[0040] 1) Soak the raw oceanic manganese nodules in simulated seawater for 1 day, then crush and grind them. Sonicate for 1 min to fully disperse, and centrifuge at 500 rpm for 1 min to collect the lower granular precipitate and dry at 25 °C for 2 h.

[0041] 2) Mix the treated manganese nodules with a certain amount of potassium nitrate at a mass ratio of 0.1:1, add a small amount of stearic acid to grind them to make them evenly mixed, and calcinate the mixture at 500 °C for 1 h. Put the calcined product into an Erlenmeyer flask filled with 0.1mol / L potassium persulfate solution, and stir for 10 min. After the reaction, filter and wash, and keep the filter residue at 60 °C for 0.5 h to obtain layered minerals.

[0042] 3) Mix ferric chloride, cobalt chloride and sodium oleate at a mass ratio of 1:1:1, and add to 100 mL of water, 100 mL of anhydrous methanol, and 100 mL of n-hexane. The mixture was kept at reflux at 70 °C for 12 h. After the reaction was completed, the mix...

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Abstract

The invention discloses a novel application of manganese nodule and a preparation method of a layered intercalated ferrite composite material. The preparation method comprises the following steps of firstly, using oceanic manganese nodule primary ore as raw materials, and using a strong oxidizing agent, persulfate and other reagents to process to synthesize a manganese nodule layered minerals; performing organic modification on the synthesized layered minerals to prepare modified layered minerals; uniformly mixing a ferrite precursor and an alcohol substances to prepare slurry, and mixing themodified layered minerals with the slurry, enabling the ferrite precursor to be introduced between the layered minerals, and performing hydrolysis and calcining to obtain the layered intercalated ferrite composite material. According to the method disclosed by the invention, by utilizing the interlayer confinement effect of the manganese nodule layered minerals, the grain diameter of the ferrite is reduced, the agglomeration of the nano-particles is inhibited, and the exposed crystal face characteristics of the intercalated ferrite are changed. Compared with the nano ferrite, the composite material has the advantages of lower cost and better adsorption, photolysis and electromagnetic performance, and has a wide application prospect in the fields of wastewater treatment, photocatalysis, electromagnetic adsorption and the like.

Description

technical field [0001] The invention relates to a compound preparation method, in particular to a layered intercalation ferrite composite material prepared from oceanic manganese nodule minerals and a preparation method thereof. Background technique [0002] Oceanic manganese nodules are a rich seabed mineral resource with large reserves and wide distribution, which have important strategic significance. In recent years, with the development of new technologies such as electron microscopy, powder X-ray diffraction, and neutron diffraction, the non-traditional utilization values ​​of manganese nodules, such as good adsorption capacity, high catalytic performance and excellent photoelectric properties, have gradually emerged. The layered minerals extracted from oceanic manganese nodules retain the pore structure of manganese nodules and have good catalytic performance and adsorption. Utilizing the physical and chemical characteristics of manganese nodules as a functional mate...

Claims

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Application Information

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IPC IPC(8): H01F1/01H01F1/03
Inventor 陈雪刚付丁陈灵乐赵方舟秦文莉艾曼青
Owner ZHEJIANG UNIV
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