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A kind of nano-carbon-coated cobaltous oxide and its preparation method and application

A cobalt oxide, nano-carbon technology, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the feasibility of hindering practical application, the complex preparation process of adsorbents, and the need for adsorption capacity. Improve and other problems, to achieve the effect of strong ferromagnetism, short adsorption equilibrium time, and easier recovery

Active Publication Date: 2021-05-28
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For now, the adsorbent used to remove tetracycline has a complex preparation process, the adsorption rate needs to be accelerated, and the adsorption capacity needs to be improved, which hinders the feasibility from laboratory to practical application.

Method used

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  • A kind of nano-carbon-coated cobaltous oxide and its preparation method and application
  • A kind of nano-carbon-coated cobaltous oxide and its preparation method and application
  • A kind of nano-carbon-coated cobaltous oxide and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0038] The preparation method of a kind of nano-carbon-coated cobaltous oxide of the present embodiment, the specific preparation steps are as follows:

[0039] (1) Calculated according to the mass ratio, the ratio of citric acid particles: cobalt acetate powder is 10:3, weigh 1g of citric acid particles and 0.3g of cobalt acetate powder and pour them into the magnetic boat, and accurately add 2mL of Distilled water, placed the magnetic boat in an ultrasonic cleaner to ultrasonically dissolve the experimental drug, and after it was completely dissolved, placed the magnetic boat in an oven at 80°C for 3 hours to obtain a mixed colloid.

[0040] (2) The resulting mixed colloid is put into a tube furnace, under Ar / H 2 Under the protective effect of (5% Ar), the calcination temperature was raised from room temperature to 450° C. over 5 hours, and then the temperature drop program was started and the ventilation was continued, and then cooled to room temperature. The burnt sample ...

Embodiment 2

[0043] The preparation method of a kind of nano-carbon-coated cobaltous oxide of the present embodiment, the specific preparation steps are as follows:

[0044] (1) Calculated according to the mass ratio, the ratio of citric acid particles: cobalt acetate powder is 10:3, weigh 1g of citric acid particles and 0.3g of cobalt acetate powder and pour them into the magnetic boat, and accurately add 2mL of Distilled water, placed the magnetic boat in an ultrasonic cleaner to ultrasonically dissolve the experimental drug, and after it was completely dissolved, placed the magnetic boat in an oven at 80°C for 3 hours to obtain a mixed colloid.

[0045] (2) The resulting mixed colloid is put into a tube furnace, under Ar / H 2 Under the protective effect of (5% Ar), the calcination temperature was raised from room temperature to 400° C. over 4 hours, and then the cooling procedure was started and the ventilation was continued, and then cooled to room temperature. The burnt sample is put ...

Embodiment 3

[0048] The preparation method of a kind of nano-carbon-coated cobaltous oxide of the present embodiment, the specific preparation steps are as follows:

[0049] (1) Calculated according to the mass ratio, the ratio of citric acid particles: cobalt acetate powder is 10:3, weigh 1g of citric acid particles and 0.3g of cobalt acetate powder and pour them into the magnetic boat, and accurately add 2mL of Distilled water, placed the magnetic boat in an ultrasonic cleaner to ultrasonically dissolve the experimental drug, and after it was completely dissolved, placed the magnetic boat in an oven at 80°C for 3 hours to obtain a mixed colloid.

[0050] (2) The resulting mixed colloid is put into a tube furnace, under Ar / H 2 Under the protective effect of (5% Ar), the temperature was raised from room temperature to 500° C. for calcination over 6 hours, and then the temperature drop program was started and the ventilation was continued, and then cooled to room temperature. The burnt sampl...

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Abstract

The invention belongs to the field of metal inorganic oxide adsorption materials, and discloses a nanometer carbon-coated cobaltous oxide, a preparation method and an application thereof. The citric acid and cobalt acetate were ultrasonically dissolved in water, and the resulting mixed solution was dried to a colloidal state, and then heated in Ar / H 2 Under the protection of a mixed atmosphere, the temperature is raised to 400-500° C. for roasting treatment, cooled to room temperature, and the obtained product is ground to obtain a nanometer carbon-coated cobaltous oxide material. The preparation process of the present invention is simple, the raw material is economical, and is applicable to large-scale production. The obtained nano-carbon-coated cobaltous oxide for removing tetracycline has the characteristics of short adsorption equilibrium time and high adsorption capacity, and has the characteristics of convenient recovery and recycling use.

Description

technical field [0001] The invention belongs to the field of metal inorganic oxide adsorption materials, and in particular relates to a nanometer carbon-coated cobaltous oxide, a preparation method and application thereof. Background technique [0002] As a broad-spectrum antibiotic, tetracycline plays an important role in animal husbandry and pharmaceutical industries. It can be used as a food additive to promote animal growth, and it can also inhibit bacterial survival by affecting protein synthesis. However, tetracycline cannot be completely metabolized by humans, animals, and microorganisms, and up to 90% of the unabsorbed tetracycline is excreted from the organism through excretion. At the same time, most of the parent compound enters surface water and groundwater through soil infiltration. , soil and other environments, due to the slow rate of natural biodegradation in water bodies, microorganisms in the water will develop resistance to tetracyclines, and human beings ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/38C02F101/34
CPCB01J20/06B01J20/205C02F1/281C02F2101/34C02F2101/38
Inventor 张声森杨莞榕高琼芝杨思源方岳平
Owner SOUTH CHINA AGRI UNIV
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