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Method for preparing low dimensional manganese oxide nanometer crystal

A technology of nanocrystals and manganese oxides, applied in nanotechnology, nanotechnology, manganese oxide/manganese hydroxide, etc., can solve the problems of low production costs, achieve low cost, easy promotion and application, and simple methods

Active Publication Date: 2012-10-24
重庆天渝新材料技术研究院有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing manganese oxide nanocrystals by addressing the shortcomings of the existing hydrothermal method for preparing manganese oxide nanocrystals. Actively control the synthesis of manganese oxide nanocrystals with different shapes and crystal structures, which makes up for the shortcomings of the single morphology and crystal structure synthesized by the existing hydrothermal method

Method used

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  • Method for preparing low dimensional manganese oxide nanometer crystal
  • Method for preparing low dimensional manganese oxide nanometer crystal
  • Method for preparing low dimensional manganese oxide nanometer crystal

Examples

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Embodiment 1

[0030] A method for preparing low-dimensional manganese oxide nanocrystals, comprising the following preparation processes:

[0031] (1) Preparation of amorphous manganese dioxide nanoparticles by water-oil two-phase method

[0032] (2) Manganese dioxide nanoparticles were used as seeds, and low-dimensional manganese oxide nanocrystals were prepared by hydrothermal synthesis

[0033] 2. The manganese dioxide nanoparticles with amorphous structure, its preparation steps are as follows:

[0034] Potassium permanganate, tetra-n-octylammonium bromide and sodium borohydride are used as raw materials, water and toluene are used as solvents, according to the quality of potassium permanganate: the quality of tetra-n-octylammonium bromide: the quality of sodium borohydride: The volume of deionized water: the volume ratio of the toluene solution is 16mg: 110mg: 38mg: 10ml: 10ml. In the container, first add the aqueous solution of potassium permanganate, then add the toluene solution of...

Embodiment 2

[0041] A method for preparing low-dimensional manganese oxide nanocrystals, same as example 1, wherein:

[0042] In step (1), deionized water is used as a solvent, and the mass of manganese dioxide: the ratio of deionized water is 10 mg: 35 ml, and the mixture is magnetically stirred for 10 minutes.

[0043] In step (2), at a temperature of 140° C., a hydrothermal reaction was carried out for 24 hours.

Embodiment 3

[0045] A method for preparing low-dimensional manganese oxide nanocrystals, same as example 1, wherein:

[0046] In step (1), 10 mol / L NaOH is used as a solvent, and the mass of manganese dioxide: 10 mol / L NaOH ratio is 10 mg: 35 ml, and magnetically stirred for 10 minutes.

[0047] In step (2), at a temperature of 140° C., a hydrothermal reaction was carried out for 24 hours.

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Abstract

The invention discloses a method for preparing a low dimensional manganese oxide nanometer crystal and belongs to the technical field of function materials. According to the method, deionized water, sodium hydroxide and a dilute sulphuric acid are used as solvents, an amorphous manganese dioxide nanoparticle is used as a 'seed' to synthesize the low dimensional manganese oxide nanometer crystal, a surface active agent is not required, the cost is low, and the production is easy to expand. The prepared low dimensional manganese oxide nanometer material crystal is rich in the structure and shape, and the particle size and shape of a synthesized product are uniform. The prepared low dimensional manganese oxide by means of the method can be widely applied to new energy devices of lithium ion batteries, solar cells, supercapacitors and the like, the prepared low dimensional manganese oxide can also be applied to the fields of catalyst carriers, information materials and the like, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a preparation method of low-dimensional manganese oxide nanocrystals. Background technique [0002] Manganese oxides are rich in resources, low in price, environmentally friendly, and have a variety of oxidation valences and crystal forms. They have received great attention in research fields such as lithium-ion batteries, supercapacitors, catalysis, and molecular sieves. At present, there are many methods for preparing manganese oxide nanomaterials, such as sol-gel method, hydrothermal method, and electrochemical deposition method. They synthesized a series of nanowires, nanorods, nanobelts, nanosheets, and nanoflower-like low-dimensional manganese oxide nanomaterials, which are widely used in research in various fields. [0003] Hydrothermal method is one of the most common methods for the synthesis of low-dimensional manganese oxide nanocrystals. For...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/02B82Y30/00
Inventor 张育新董萌邱鑫郝晓东刘佳黄明柳红东曾莉张淑平李新禄黄佳木
Owner 重庆天渝新材料技术研究院有限公司
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