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Method for easily and conveniently preparing Mn3O4 nanopowder and product of method

A nano powder, a simple technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve the effect of pure product, low price and uniform particle size

Inactive Publication Date: 2016-10-12
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no simple and effective method for mass production of high-purity Mn 3 o 4

Method used

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  • Method for easily and conveniently preparing Mn3O4 nanopowder and product of method
  • Method for easily and conveniently preparing Mn3O4 nanopowder and product of method
  • Method for easily and conveniently preparing Mn3O4 nanopowder and product of method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 0.05mol Mn(Ac) 2 4H 2 Add 300ml of deionized water to O crystals, dissolve in a three-necked flask, heat and stir in a water bath, and the water temperature is 80°C. Measure 0.1 mol of hydrogen peroxide and add 100 ml of deionized water to dilute, then measure 0.1 mol of ammonia water and add 100 ml of deionized water to dilute, and mix the two to obtain a mixed solution. After the crystals in the flask are completely dissolved and the temperature of the water bath is stable, slowly add the mixed solution of hydrogen peroxide and ammonia water dropwise, keep stirring rapidly, seal the flask after the dropwise addition, and continue the reaction for 2 to 3 hours. After the reaction, the flask was removed, the reactant was transferred to a beaker, sealed and ultrasonically treated for 30 min, and then left to stand in a fume hood. Pour off the supernatant repeatedly, add deionized water and let it stand until the pH of the supernatant is close to 7. If the standst...

Embodiment 2

[0037] Weigh 0.05mol Mn(Ac) 2 4H 2 Add 300ml of deionized water to O crystals, dissolve in a three-necked flask, heat and stir in a water bath, and the water temperature is 80°C. Measure 0.1 mol each of hydrogen peroxide and ammonia water, add 100 ml of deionized water to dilute, and then mix the two to obtain a mixed solution. After the crystals in the flask are completely dissolved and the temperature of the water bath is stable, slowly add the mixed solution of hydrogen peroxide and ammonia water dropwise, keep stirring rapidly, seal the flask after the dropwise addition, and continue the reaction for 2 to 3 hours. After the reaction, the flask was removed, and the reactant was transferred to a beaker for ultrasonication for 45 min, sealed and placed in a fume hood to stand still. Pour off the supernatant repeatedly, add deionized water and let it stand until the pH of the supernatant is close to 7, centrifuge the last reactant, pour off the supernatant, transfer the sedi...

Embodiment 3

[0040] Weigh 0.05mol Mn(Ac) 2 4H 2 Add 300ml of deionized water to O crystals, dissolve in a three-necked flask, heat and stir in a water bath, and the water temperature is 75°C. Measure 0.15 mol of hydrogen peroxide and 0.1 mol of ammonia water, respectively add 100 ml of deionized water to dilute, and then mix the two to obtain a mixed solution. After the crystals in the flask are completely dissolved and the temperature of the water bath is stable, slowly add the mixed solution of hydrogen peroxide and ammonia water dropwise, keep stirring rapidly, seal the flask after the dropwise addition, and continue the reaction for 2 to 3 hours. After the reaction, the flask was removed, and the reactant was transferred to a beaker for ultrasonication for 60 min, sealed and placed in a fume hood to stand still. Filter the product, wash it repeatedly with deionized water for 4 to 5 times until the pH of the washed deionized water is close to 7, transfer the precipitate on the filter ...

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Abstract

The invention discloses a method for preparing Mn 3 o 4 The method of the nano powder, comprising: (1) taking manganese salt and deionized water and mixing to obtain a manganese salt solution, stirring in a water bath until the manganese salt is completely dissolved; the manganese salt is selected from manganese chloride tetrahydrate or manganese acetate tetrahydrate, The concentration of the manganese salt solution is 0.167-0.333mol / L; the temperature of the water bath heating is 60-100°C; (2) the hydrogen peroxide and the ammonia water are respectively diluted with deionized water and then mixed to obtain a mixed solution, which is added dropwise to the step In the manganese salt solution of (1), continue to react for 1 to 3 hours under stirring, and obtain the Mn after standing, washing and drying. 3 o 4 The molar ratio of nanometer powder, manganese salt, hydrogen peroxide and ammonia water is 1:0.25-3:1-3. The present invention prepares Mn through one-step method 3 o 4 Nano powder, simple process, low cost, convenient for industrial production; the prepared Mn 3 o 4 The yield and purity of the nanopowder are high.

Description

technical field [0001] The invention relates to the field of preparation of nanopowders, in particular to a simple method for preparing Mn 3 o 4 The method of nanopowder and its product. Background technique [0002] As a typical transition metal oxide, manganese oxide plays an important role in the fields of catalysis, magnetism and electrochemistry. Especially in recent years, due to the intensification of the energy crisis and environmental crisis, the exploration of new environmentally friendly energy storage materials has become a research hotspot. As one of the main raw materials for lithium-ion batteries, manganese oxide has been deeply studied for its electrochemical properties. where Mn 3 o 4 As a kind of manganese oxide, its own conductivity is low, but after compounding with graphene, it is a good electrode material and is widely used in the fields of lithium batteries and supercapacitors. At the same time Mn 3 o 4 As a semiconductor material, it has a nega...

Claims

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Application Information

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IPC IPC(8): C01G45/02B82Y30/00
CPCC01G45/02B82Y30/00C01P2002/72C01P2004/04C01P2004/64C01P2006/80
Inventor 马晓磊李志祥许高杰廖广鑫孙爱华段雷郭建军
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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