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Method for preparing magnetic iron containing graphene-manganese dioxide nano material

A manganese dioxide and nanomaterial technology, applied in ferrous oxides, chemical instruments and methods, iron compounds, etc., can solve the problems of inability to exert special properties and advantages, poor electronic conductivity, and low utilization rate, etc. Achieving the effect of good preparation method, improved electrical conductivity and easy control

Active Publication Date: 2016-11-16
GUANGXI GUILIU CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the products obtained by most methods are powders or particles with different shapes, wide particle size distribution, and serious agglomeration phenomenon.
Nano-manganese dioxide will have serious agglomeration during storage and use, making it unable to exert its special properties and advantages in a monodisperse state
When used as an electrode material, there are also disadvantages such as poor electronic conductivity and low utilization rate when manganese dioxide is used alone.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of a graphene-manganese dioxide nanomaterial containing magnetic iron, comprising the steps of:

[0029] (1) adding graphite oxide into double distilled water, the weight ratio of graphite oxide to the double distilled water is 1.2:100, and ultrasonicating at 600 W for 90 min to obtain a graphene oxide dispersion;

[0030] (2) Add sodium humate and hydrazine hydrate in the amount of 0.3 g / 20 ml and 0.2 g / 20 ml to the graphene oxide dispersion, stir evenly, and transfer to the hydrothermal reaction in which the lining material is polytetrafluoroethylene Reactor at 95°C for 80 h;

[0031] (3) Filter the product in the reaction kettle, wash with 100 ml of 70% ethanol for 3 times, and then wash with double distilled water until neutral to obtain graphene;

[0032] (4) Dissolve graphene and ferric chloride hexahydrate in 0.2 mol / L manganese sulfate solution at a weight percentage of 6% and 0.4%, respectively, and then add an equal volume of 0.3 mol / L po...

Embodiment 2

[0034] A preparation method of a graphene-manganese dioxide nanomaterial containing magnetic iron, comprising the steps of:

[0035] (1) adding graphite oxide into double distilled water, the weight ratio of graphite oxide to the double distilled water is 0.8:100, and ultrasonicating at 800 W for 80 min to obtain a graphene oxide dispersion;

[0036] (2) Add sodium humate and hydrazine hydrate in the amount of 0.8 g / 20 ml and 0.1 g / 20 ml to the graphene oxide dispersion, stir evenly, and transfer to the hydrothermal reaction in which the lining material is polytetrafluoroethylene Reactor at 110°C for 6 h;

[0037] (3) Filter the product in the reaction kettle, wash with 100 ml of 70% ethanol for 3 times, and then wash with double distilled water until neutral to obtain graphene;

[0038] (4) Dissolve graphene and ferric chloride hexahydrate in 0.15 mol / L manganese sulfate solution at a weight percentage of 5% and 0.8%, respectively, and then add an equal volume of 0.35 mol / L ...

Embodiment 3

[0040] A preparation method of a graphene-manganese dioxide nanomaterial containing magnetic iron, comprising the steps of:

[0041] (1) adding graphite oxide into double distilled water, the weight ratio of graphite oxide to the double distilled water is 1.5:100, and ultrasonicating at 200 W for 100 min to obtain a graphene oxide dispersion;

[0042] (2) Add sodium humate and hydrazine hydrate in the amount of 0.2 g / 20 ml and 0.5 g / 20 ml to the graphene oxide dispersion, stir evenly, and transfer to the hydrothermal reaction in which the lining material is polytetrafluoroethylene Reactor at 90°C for 10 h;

[0043] (3) Filter the product in the reaction kettle, wash it twice with 100 ml of 70% ethanol, and then wash it with double distilled water until neutral to obtain graphene;

[0044] (4) Dissolve graphene and ferric chloride hexahydrate in 0.25 mol / L manganese sulfate solution at a weight percentage of 10% and 0.2%, respectively, and then add an equal volume of 0.3 mol / L p...

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Abstract

The invention discloses a method for preparing a magnetic iron containing graphene-manganese dioxide nano material. The method comprises the following steps: firstly, preparing graphite oxide into graphene, respectively dissolving graphene and ferric chloride hexahydrate in a manganese sulfate solution, adding a potassium permanganate solution and acid, and performing ultrasonic treatment to obtain the magnetic iron containing graphene-manganese dioxide nano material. The manganese dioxide nano crystal in the magnetic iron containing graphene-manganese dioxide nano material is relatively large in specific surface area, the reaction area of active substances is increased, and graphene and ferroferric oxide can be introduced as efficient carriers, so that the use efficiency of manganese dioxide can be improved, and agglomeration can be prevented; when the material is used as an electrode material, the internal resistance of an electrode can be greatly reduced, electrons can be smoothly transferred in the material, the conductivity of the composite material can be greatly improved, and the material is an excellent electrode material.

Description

technical field [0001] The invention belongs to the field of preparation of manganese dioxide nanocomposite materials, and in particular relates to a preparation method of a graphene-manganese dioxide nanomaterial containing magnetic iron. Background technique [0002] Manganese dioxide material is widely used in dry batteries, alkaline manganese batteries, zinc manganese batteries, magnesium manganese batteries, In chemical power sources such as buried manganese batteries, as a multifunctional fine inorganic functional material, it can be applied as molecular sieves, advanced catalyst materials, etc. As an amphoteric transition metal oxide, it is widely used in industrial production and environmental treatment, such as the adsorption and degradation of organic pollutants, and the treatment of heavy metal wastewater containing mercury, mercury, lead, chromium, and metalloid arsenic. Application prospect. In particular, nano-manganese dioxide has many unique properties, suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/08C01B31/04
CPCC01G49/0018C01P2004/80
Inventor 罗驰飞许雄新陈建强覃胜先吴元花
Owner GUANGXI GUILIU CHEM CO LTD
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