Preparation method of nanometer manganese sesquioxide with a hollow cone shape

A technology of manganese trioxide and hollow circle is applied in the field of nanomaterials to achieve the effects of easy control, novel structure and good application prospects

Active Publication Date: 2013-05-29
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved in the present invention is to disclose a kind of Mn with hollow nano-cone structure. 2 o 3 preparation method, to overcome the defects of the prior art above, to provide a low cost, simple operation, no need for complex equipment Mn 2 o 3 Preparation method of hollow nanocone

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  • Preparation method of nanometer manganese sesquioxide with a hollow cone shape
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  • Preparation method of nanometer manganese sesquioxide with a hollow cone shape

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Embodiment 1

[0016] Dissolve 0.1g of P123 in 30ml of deionized water, then add 30mg of carbon nanotubes, after ultrasonic dispersion, add 4ml of 0.2mol / L manganese nitrate solution, stir, ultrasonically disperse for 2 hours, then add dropwise 10ml of 0.1mol / L manganese nitrate solution into the solution Potassium manganate solution, then the mixed solution was transferred to a 50ml hydrothermal kettle, hydrothermally reacted at a temperature of 130°C for 6h, and finally cooled to room temperature, suction filtered, washed, and dried at 60°C for 6h. What is obtained is a homogeneously doped manganese dioxide hollow nanocone / carbon nanotube composite material (scanning electron microscope photos such as figure 1 shown), the product was transferred to a tube furnace and calcined at 550 °C in air for 4 h. What is obtained is a high-purity nano-Mn with a hollow cone shape 2 o 3 , transmission electron microscope pictures as figure 2 As shown, the XRD curve is as image 3 shown.

Embodiment 2

[0018] Dissolve 0.1g of P123 in 30ml of deionized water, then add 60mg of carbon nanotubes, after ultrasonic dispersion, add 1ml of 0.6mol / L manganese nitrate solution, stir, ultrasonically disperse for 2 hours, then add 10ml dropwise to the solution with a concentration of 0.1mol / L Potassium permanganate solution, then the mixed solution was transferred to a 50ml hydrothermal kettle, hydrothermally reacted at a temperature of 120°C for 5h, and finally cooled to room temperature, suction filtered, washed, and dried at 60°C for 6h. The homogeneously doped manganese dioxide hollow nanocone / carbon nanotube composite material was obtained. The product was transferred to a tube furnace and calcined at 550° C. for 6 hours in air. What is obtained is a high-purity nano-Mn with a hollow cone shape 2 o 3 .

Embodiment 3

[0020] Dissolve 0.1g of P123 in 30ml of deionized water, then add 30mg of activated carbon, after ultrasonic dispersion, add 1.5ml of 0.5mol / L manganese nitrate solution, stir, ultrasonically disperse for 2 hours, then add dropwise 10ml of 0.1mol / L permanganese into the solution Potassium acid potassium solution, then the mixed solution was transferred to a 50ml hydrothermal kettle, hydrothermally reacted at a temperature of 120°C for 6h, and finally cooled to room temperature, suction filtered, washed, and dried at 60°C for 6h. The homogeneously doped manganese dioxide hollow nanocone / activated carbon composite material was obtained. The product was transferred to a tube furnace and calcined at 550°C for 2 hours in air. What is obtained is a high-purity nano-Mn with a hollow cone shape 2 o 3 .

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Abstract

The invention discloses a manganese sesquioxide nano-structure with a hollow cone shape and a preparation method thereof. The cavity of a hollow cone has the diameter being 60-100nm and the wall thickness being 20-30nm. The preparation method comprises the following steps of: with a tri-block copolymer PEO-PPO-PEO (P123) as a structure-directing agent, dissolving the structure-directing agent in an aqueous solution, then adding co-reducer carbon powder and manganese nitrate, dispersing and mixing, adding potassium permanganate, stirring for a period of time, carrying out hydro-thermal treatment at a certain temperature, washing to obtain manganese dioxide hollow cone/carbon composite material; and baking the manganese dioxide hollow cone/carbon composite material for a period of time in 550 DEG C-air to obtain a manganese sesquioxide hollow nanometer cone with high purity. The preparation method disclosed by the invention is simple in a reaction process and easy to control. The manganese sesquioxide structure is novel in structure and has good application prospect in fields of energy storage, catalysis and the like.

Description

technical field [0001] The invention relates to the field of nanometer materials, in particular to a method for preparing manganese trioxide with hollow nano-cone shape. Background technique [0002] Energy is an important basis for the survival and development of human society. In recent years, with the rapid development of microelectronics technology, traditional capacitors as a backup power supply have been difficult to meet the growing energy storage requirements, and providing high-power backup power for multi-functional electronic products has become more and more popular among workers in the field of electrochemistry. focus on. Lithium-ion batteries and supercapacitors are the most popular energy storage components today, and their performance mainly depends on the electrode materials used. The quality of the electrode material directly affects the energy storage performance. Therefore, preparing new materials with high capacitance or improving the performance of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/02B82Y40/00
Inventor 江浩李春忠戴义辉陈维纳
Owner EAST CHINA UNIV OF SCI & TECH
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