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Preparation method for manganese oxide nano rods

A technology of manganese oxide nanorods and manganese oxides, which is applied in the field of nano functional materials preparation, can solve the problems of long preparation cycle, uneven size, high temperature, etc., and achieve the effect of easy control of shape, good repeatability and small diameter

Inactive Publication Date: 2014-12-17
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems of long preparation period, high temperature, large diameter and non-uniform size in the existing solvothermal preparation of basic manganese oxide nanorods, the present invention provides a preparation method of basic manganese oxide nanorods , and under different calcination conditions, manganese oxide nanorods with different valence states and different sizes were obtained by calcination of rod-shaped basic manganese oxide precursors

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  • Preparation method for manganese oxide nano rods
  • Preparation method for manganese oxide nano rods
  • Preparation method for manganese oxide nano rods

Examples

Experimental program
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Effect test

Embodiment 1

[0055] Add 0.075mmol of potassium permanganate into a beaker containing 44mL of distilled water, and stir under the action of a magnetic stirrer to obtain a purple-red solution; then add 0.6mL of ethylene glycol to the potassium permanganate solution and continue stirring for 5 A mixed solution with a black precipitate can be obtained in 1 hour. The mixed solution was put into a 50mL polytetrafluoroethylene-lined stainless steel hydrothermal reaction kettle and heated in an intelligently temperature-controllable heating furnace. The reaction conditions were: reaction temperature 120°C, reaction time 3 hours. After natural cooling, the hydrothermal product was centrifuged, washed three times with distilled water and absolute ethanol, and then dried in vacuum at 60° C. for 24 hours to obtain a light brown powder.

[0056] Its XRD spectrum is as figure 1 As shown, the analytical XRD spectrum shows that the prepared sample has a good crystal structure, and the product is basic ma...

Embodiment 2

[0058] Add 0.075mmol of potassium permanganate into a beaker containing 44mL of distilled water, and stir under the action of a magnetic stirrer to obtain a purple-red solution; then add 1.0mL of ethylene glycol to the potassium permanganate solution and continue stirring for 5 A mixed solution with a black precipitate can be obtained in 1 hour. The mixed solution was put into a 50mL polytetrafluoroethylene-lined stainless steel hydrothermal reaction kettle, and heated in an intelligently temperature-controllable heating furnace. The reaction conditions were: reaction temperature 120°C, reaction time 10 hours. After natural cooling, the hydrothermal product was centrifuged, washed three times with distilled water and absolute ethanol, and then dried in vacuum at 60° C. for 24 hours to obtain a light brown powder.

[0059] Its XRD spectrum is as Figure 4 As shown, the analytical XRD spectrum shows that the prepared sample has a good crystal structure, and the product is basic...

Embodiment 3

[0061] Add 0.0375mmol of potassium permanganate into a beaker containing 44mL of distilled water, and stir under the action of a magnetic stirrer to obtain a purple-red solution; then add 0.3mL of ethylene glycol to the potassium permanganate solution and continue stirring for 5 A mixed solution with a black precipitate can be obtained in 1 hour. The mixed solution was put into a 50mL polytetrafluoroethylene-lined stainless steel hydrothermal reaction kettle, and heated in an intelligently temperature-controllable heating furnace. The reaction conditions were: reaction temperature 120°C, reaction time 10 hours. After natural cooling, the hydrothermal product was centrifuged, washed three times with distilled water and absolute ethanol, and then dried in vacuum at 60° C. for 24 hours to obtain a light brown powder.

[0062] Its XRD spectrum is as Figure 7 As shown, the analytical XRD spectrum shows that the prepared sample has a good crystal structure, and the product is basi...

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Abstract

The invention relates to a preparation method for manganese oxide nano rods, belonging to the field of nano function materials. According to the preparation method, rod-shaped alkaline manganese oxide can be prepared by using hypermanganate and ethylene glycol under a hydrothermal condition, wherein the longest length of the alkaline manganese oxide can be up to six microns and the diameter size is 10nm-130nm; alkaline manganese oxide precursors are calcined under different calcining conditions to obtain the manganese oxide nano rods with different valence states and different sizes, namely manganese dioxide nano rods, manganese sesquioxide nano rods and trimanganese tetraoxide nano rods. By adopting the preparation method, the problems of an existing solvothermal method that the reaction time is long and the reaction temperature is high when the alkaline manganese oxide nano rods are synthesized and the diameters of the products are great and the products are not uniformly distributed are solved; and the preparation method has the advantages of simplicity in operation and many product varieties.

Description

technical field [0001] The invention belongs to the technical field of preparation of nano functional materials. Background technique [0002] Nanotechnology is a wide-coverage, multidisciplinary scientific research and industrial field developed in the 1990s. When the size of materials enters the nanometer level, some particle size-related effects will occur due to the reduction of particle size. Such as surface effects, quantum size effects, macroscopic quantum tunneling effects, etc., make nanomaterials have many physical and chemical properties different from bulk materials. In recent years, with economic development and population growth, energy and environmental issues have become more and more prominent, and the rapid development of nanotechnology has provided endless opportunities and broad prospects for solving energy and environmental crises. As an abundant resource, manganese oxide has a variety of oxidation valence states. Its excellent properties make it widely...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/02B82Y30/00B82Y40/00
Inventor 李全军蓝雷雷刘冰冰张华芳
Owner JILIN UNIV
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