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Simple synthesis method capable of controlling three-dimensional structure of nanometer cobaltosic oxide

A technology of cobalt tetroxide and three-dimensional structure, applied in cobalt oxide/cobalt hydroxide, nanotechnology and other directions, can solve the problems of complex process, high cost, easy to pollute the environment, etc. Effect

Pending Publication Date: 2022-04-15
ZUNYI NORMAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned method for preparing the three-dimensional structure of cobalt tetroxide is complicated because the process requires the use of templates, substrates, organic solvents or structure-directing agents, which makes the preparation process costly, and the use of organic reagents is very easy to pollute the environment

Method used

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  • Simple synthesis method capable of controlling three-dimensional structure of nanometer cobaltosic oxide
  • Simple synthesis method capable of controlling three-dimensional structure of nanometer cobaltosic oxide
  • Simple synthesis method capable of controlling three-dimensional structure of nanometer cobaltosic oxide

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Experimental program
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Effect test

Embodiment 1

[0036] 1) Using cobalt nitrate hexahydrate as the cobalt source, threonine as the ligand, and deionized water as the solvent, the ligand and Co 2+ A solution with a substance ratio of 2.0, ultrasonically stirred for 20 minutes at room temperature to form a dark red transparent solution;

[0037] 2) Prepare a 1mol / L NaOH aqueous solution, add it and concentrated nitric acid with a concentration of 36% (wt) dropwise to the solution prepared in step 1), and stir fully to obtain a solution with a pH value of 9.3;

[0038] 3) Transfer the mixed system obtained in step 2) to a self-pressurized hydrothermal reaction kettle, seal it, and place it in a high-temperature oven at 120° C. for 12 hours;

[0039] 4) After the reaction, the product was collected by centrifugation, washed three times with deionized water and absolute ethanol, and then dried in air at 80°C for 6 hours;

[0040] 5) The dried samples were taken for phase and morphology characterization. Scanning electron micros...

Embodiment 2

[0043] 1) Using cobalt nitrate hexahydrate as the cobalt source, threonine as the ligand, and deionized water as the solvent, the ligand and Co 2+ A solution with a substance ratio of 2.0, ultrasonically stirred for 20 minutes at room temperature to form a dark red transparent solution;

[0044] 2) Prepare a 1mol / L NaOH aqueous solution, add it and concentrated nitric acid with a concentration of 36% (wt) dropwise to the solution prepared in step 1), and stir fully to obtain a solution with a pH value of 6.0;

[0045] 3) Transfer the mixed system obtained in step 2) to a self-pressurized hydrothermal reaction kettle, seal it, and place it in a high-temperature oven at 120° C. for 12 hours;

[0046] 4) After the reaction, the product was collected by centrifugation, washed three times with deionized water and absolute ethanol, and then dried in air at 80°C for 6 hours;

[0047] 5) The dried samples were taken for phase and morphology characterization. Scanning electron micros...

Embodiment 3

[0049] 1) Using cobalt nitrate hexahydrate as the cobalt source, threonine as the ligand, and deionized water as the solvent, the ligand and Co 2+ A solution with a substance ratio of 2.0, ultrasonically stirred for 20 minutes at room temperature to form a dark red transparent solution;

[0050] 2) Prepare a 1mol / L NaOH aqueous solution, add it and concentrated nitric acid with a concentration of 36% (wt) dropwise to the solution prepared in step 1), and stir fully to obtain a solution with a pH value of 7.3;

[0051] 3) Transfer the mixed system obtained in step 2) to a self-pressurized hydrothermal reaction kettle, seal it, and place it in a high-temperature oven at 120° C. for 12 hours;

[0052] 4) After the reaction, the product was collected by centrifugation, washed three times with deionized water and absolute ethanol, and then dried in air at 80°C for 6 hours;

[0053] 5) The dried samples were taken for phase and morphology characterization. Scanning electron micros...

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Abstract

The invention discloses a simple synthesis method capable of controlling a three-dimensional structure of nano cobaltosic oxide. According to the preparation method, threonine and cobalt nitrate hexahydrate are taken as reaction raw materials, NaOH and concentrated nitric acid are taken as pH value regulators, and nano cobaltosic oxide with a three-dimensional structure is synthesized by a hydrothermal method; by changing the ratio of the amount of substance of threonine to cobalt salt, whether a dispersing agent is added, the pH value of a reaction system, the reaction temperature and other experiment conditions, nanometer cobaltosic oxide three-dimensional structures (a three-dimensional structure formed by assembling nanosheets, a dandelion-shaped structure, a three-dimensional net film structure, a three-dimensional net film structure, a three-dimensional net film structure, a three-dimensional net film structure, a three-dimensional net film structure and a three-dimensional net film structure) with different structures and morphologies can be synthesized in a controlled manner. ), a sea urchin-shaped structure, a Dali chrysanthemum-shaped structure and the like. The method disclosed by the invention has the advantages of low raw material price, simple and feasible synthesis process, environment friendliness, controllable material morphology and the like.

Description

technical field [0001] The invention relates to a simple synthesis method capable of controlling the three-dimensional structure of nanometer cobalt trioxide, belonging to the technical field of inorganic material synthesis. Background technique [0002] In recent years, research related to cobalt tetroxide particles has become very active. On the one hand, the controllable preparation of cobalt tetroxide particles and the study of their corresponding properties have high theoretical value. On the other hand, because cobalt tetroxide, as a functional material, can Widely used in construction materials, coatings, pigments, catalysts, ceramic modification, textiles, biomedicine, cosmetics and magnetic recording materials and other fields. The three-dimensional structure of cobalt tetroxide has attracted widespread attention of researchers because of its large surface area, which can provide more reaction sites and shorter ion diffusion channels. At present, there are many thr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G51/04B82Y40/00
CPCY02E60/10
Inventor 康敏周海
Owner ZUNYI NORMAL COLLEGE
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