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Method for preparing manganese dioxide one-dimensional nanometer material

A nanomaterial, manganese dioxide technology, applied in the field of preparation of one-dimensional manganese dioxide nanomaterials, can solve the problems of product purity and yield reduction, cumbersomeness, etc., and achieve the effect of easy operation, convenient control and high yield

Inactive Publication Date: 2009-09-16
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods are relatively cumbersome, and multi-step synthesis will greatly reduce the purity and yield of the product. Therefore, one-step synthesis of nano-MnO with uniform and controllable morphology 2 It is particularly important, and currently simple inorganic salts are used to simultaneously control MnO 2 The crystal form and morphology of the product have not been reported yet

Method used

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  • Method for preparing manganese dioxide one-dimensional nanometer material
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  • Method for preparing manganese dioxide one-dimensional nanometer material

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Inject 10 ml of pure water into a 50 ml beaker, dissolve 1.5 mmol of manganese chloride in water to form a clear solution, and then dissolve 3 mmol of sodium fluoride in it to obtain solution a. In addition, 10 ml of pure water was injected into a 50 ml beaker, and 1 mmol of potassium permanganate was dissolved in water to obtain solution b. Mix and stir solution a and solution b for 30 minutes, then transfer to a 35 ml stainless steel autoclave containing polytetrafluoroethylene liner, add pure water to 70% to 90% of the volume of the autoclave, seal the autoclave, and put React in a high-temperature oven at 180°C for 24 hours. After natural cooling, the obtained product was washed and centrifuged several times with pure water and ethanol, and then dried in an oven at 60°C for 6 hours to obtain α-MnO 2 One-dimensional nanomaterials. figure 1 It is a scanning electron microscope photo of the nanowires prepared in this embodiment.

Embodiment 2

[0024] Inject 10 ml of pure water into a 50 ml beaker, dissolve 1.5 mmol of manganese chloride in water to form a clear solution, and then dissolve 1 mmol of sodium fluoride in it to obtain solution a. In addition, 10 ml of pure water was injected into a 50 ml beaker, and 1 mmol of potassium permanganate was dissolved in water to obtain solution b. Solution a and solution b were mixed and stirred for 30 minutes and then transferred to a stainless steel autoclave with a polytetrafluoroethylene liner with a volume of 35 milliliters, and pure water was added to 70% to 90% of the volume of the kettle. The kettle was sealed and put into a high-temperature oven at 180° C. to react for 24 hours. After natural cooling, the obtained product was washed and centrifuged several times with pure water and ethanol, and then dried in an oven at 60°C for 6 hours to obtain β-MnO 2 One-dimensional nanomaterials. figure 2 It is a scanning electron microscope photo of the nanowires prepared in ...

Embodiment 3

[0026] Inject 10 ml of pure water into a 50 ml beaker, dissolve 1.5 mmol of manganese chloride in water to form a clear solution, and then dissolve 1 mmol of sodium sulfate therein to obtain solution a. In addition, 10 ml of pure water was injected into a 50 ml beaker, and 1 mmol of potassium permanganate was dissolved in water to obtain solution b. Solution a and solution b were mixed and stirred for 30 minutes and then transferred to a stainless steel autoclave with a polytetrafluoroethylene liner with a volume of 35 milliliters, and pure water was added to 70% to 90% of the volume of the kettle. The kettle was sealed and put into a high-temperature oven at 180° C. to react for 24 hours. After natural cooling, the obtained product was washed and centrifuged several times with pure water and ethanol, and then dried in an oven at 60°C for 6 hours to obtain β-MnO 2 One-dimensional nanomaterials. image 3 It is a scanning electron microscope photo of the nanowires prepared in ...

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Abstract

The invention provides a method for preparing a manganese dioxide one-dimensional nanometer material in the field of inorganic nanometer material. The method comprises the following steps: solvent a and solvent b are prepared, wherein the solvent a is prepared by dissolving manganese chloride in pure water, adding a dressing agent into the water to be mixed, and the ratio of molar weight of the manganese chloride and the dressing agent is 3:2-1:2; the solvent b is prepared by dissolving potassium permanganate in the pure water; the solvent a and the solvent b in the step one are mixed, wherein the mixing is carried out according to the molar ratio of the manganese chloride and the potassium permanganate of 3:2; the mixed solvent is stirred, and the mixed solution is transferred into a high pressure autoclave containing a polyfluortetraethylene liner to react for 2 to 24 hours at a temperature of between 100 and 200 DEG C, then naturally cooled; a product obtained after cooling in the step two is washed and dried to obtain the manganese dioxide one-dimensional nanometer material. The method has the advantages of simple and convenient operation, high yield, even and controllable product crystal formation and appearance and the like.

Description

technical field [0001] The invention relates to a preparation method in the field of inorganic nanomaterials, in particular to a preparation method of manganese dioxide one-dimensional nanomaterials. technical background [0002] Manganese dioxide is an important inorganic material with abundant sources, low price, and environmental friendliness. It has a wide range of applications and can be used in molecular sieves, magnetic materials, glass, ceramics, advanced catalysts, and electrode materials for rechargeable batteries. In particular, nano-manganese dioxide has good electrochemical performance, superior ion / electronic conductivity and relatively high potential, making it very important in the field of electrochemical applications, such as alkaline manganese battery cathode material, high energy density lithium Battery cathode materials and supercapacitor electrode materials, etc. At present, there are many methods for preparing nano-manganese dioxide, such as: sol-gel ...

Claims

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Application Information

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IPC IPC(8): C01G45/02B82B3/00
Inventor 桂义才吴梦玲钱雪峰
Owner SHANGHAI JIAO TONG UNIV
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