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Method for preparing MnOOH nano rods

A nanorod, potassium permanganate technology, applied in nanotechnology, nanotechnology, nanostructure manufacturing and other directions, can solve the problems of cumbersome operation, low solubility, no morphology of products, and achieve uniform particle size distribution, simple process, Easy to use effect

Inactive Publication Date: 2010-10-06
JIANGSU TIANHENG NANO SCI & TECH +1
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Problems solved by technology

The disadvantage of this method is: MnO 2 and Mn 3 o 4 The solubility in water is relatively small, the solid phase reaction is not uniform, impurities are easily mixed in the product, and two kinds of manganese sources are used, and the product has no specific morphology
The disadvantage of this method is that the operation is cumbersome, a magnetic field needs to be set, and nitrogen gas must be introduced, which is not suitable for industrial production.
The disadvantage of this method is that it needs reversed phase micelles as a template, and it needs to use surfactant

Method used

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  • Method for preparing MnOOH nano rods
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  • Method for preparing MnOOH nano rods

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Embodiment 1）

[0013] Weigh 0.2g of potassium permanganate, dissolve it in 15mL of N,N-dimethylformamide, raise the temperature of the reaction system to 120°C under airtight conditions, and control the reaction system at The solvothermal reaction was carried out at a temperature of 120°C for 10 hours. This reaction is also a redox reaction. The main product is basic manganese oxide (MnOOH), and the basic manganese oxide is solid, and the rest of the products are dissolved in the liquid system. The reacted mixture is subjected to solid-liquid separation by centrifugation or filtration to remove liquid substances and leave solid basic manganese oxide, and then wash the solids with distilled water and absolute ethanol in sequence, and finally wash the solids at a temperature of 80°C The washed solid is vacuum-dried for 2-3 hours, and the air pressure in the drying oven is 0.01-0.03 MPa to obtain MnOOH nanorods with a diameter of 8nm-12nm and a length of 50nm-500nm.

Embodiment 2～ Embodiment 5）

[0015] Each embodiment is basically the same as Embodiment 1, and the differences are shown in Table 1.

[0016] Table 1

[0017]

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Abstract

The invention discloses a method for preparing MnOOH nano rods, which prepares the MnOOH nano rods through a solvent thermal reaction of potassium permanganate and N,N-dimethylformamide , namely prepares the MnOOH nano rods through the following steps of: dissolving the potassium permanganate in the N,N-dimethylformamide according to a weight to volume ratio of 1:50 to 1:100 (g / ml); performing the solvent thermal reaction for 2 to 24 hours at the temperature of between 100 and 200 DEG C; then carrying out solid-liquid separation on a reaction product; washing the separated solid by using distilled water, absolute ethyl alcohol or acetone sequentially; and finally drying the washed solid at the temperature of between 30 and 100 DEG C to obtain the MnOOH nano rods. The invention aims to provide the method for preparing the MnOOH nano rods, which does not need a surface active agent or a template, has the advantages of high purity and uniform particle size distribution of the product and is suitable for industrial production. The method of the invention has simple process and simple and convenient operation and is suitable for industrial production.

Description

technical field [0001] The invention relates to a method for preparing MnOOH nanorods. Background technique [0002] Basic manganese oxide (MnOOH) is a very important substance, which has very important uses in the fields of electrochemistry, batteries, and electrochromism. MnOOH can be used as a precursor for the preparation of Li-Mn-O spinel structure, manganese dioxide and other manganese oxides. Traditionally, bulk MnOOH can be prepared by electrochemical methods. In recent years, some literatures have also reported the preparation of MnOOH by hydrothermal method and reverse micellar method. [0003] Chinese patent document CN101428860A discloses a kind of method for preparing high-purity MnOOH, and this method is hydrothermal method, and it is to use MnO 2 and Mn 3 o 4 As a reaction precursor, the MnO 2 and Mn 3 o 4 After mixing, add water and react at room temperature to 100°C for 0.5 to 60 hours. The disadvantage of this method is: MnO 2 and Mn 3 o 4 The s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/02B82B3/00
Inventor 李中春顾爱军周全法尚通明缪晓玉
Owner JIANGSU TIANHENG NANO SCI & TECH
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