Preparation method of extra-long manganese dioxide nanowires

A manganese dioxide nanometer and ultra-long technology, applied in manganese oxide/manganese hydroxide, nanotechnology and other directions, can solve the problem of inability to prepare manganese dioxide nanowires, etc., and achieve the effect of environmental friendliness and uniform distribution

Active Publication Date: 2013-07-10
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, none of the current methods can prepare manganese dioxide nanowires with a length greater than 100 μm under mild conditions, and acetic acid and potassium acetate are used as additives to control The preparation of long nanowires has not yet been reported in literature or patents

Method used

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  • Preparation method of extra-long manganese dioxide nanowires
  • Preparation method of extra-long manganese dioxide nanowires
  • Preparation method of extra-long manganese dioxide nanowires

Examples

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Embodiment 1

[0021] Add 2 mol / L of manganese sulfate, potassium chlorate, and 1 mol / L of potassium acetate and acetic acid into water, and stir until they are evenly mixed. Then transfer to an autoclave lined with polytetrafluoroethylene, react in a constant temperature box at 160 °C for 12 h, wash, filter, and dry to obtain ultra-long manganese dioxide nanowires.

Embodiment 2

[0023] Add 1 mol / L of manganese sulfate, potassium chlorate, and 1 mol / L of potassium acetate and acetic acid into water, and stir until evenly mixed. Then transfer to an autoclave lined with polytetrafluoroethylene, react in a constant temperature box at 160 °C for 12 h, wash, filter, and dry to obtain ultra-long manganese dioxide nanowires.

Embodiment 3

[0025] Add 2 mol / L of manganese sulfate, potassium chlorate, and 1.5 mol / L of potassium acetate and acetic acid into water, and stir until they are evenly mixed. Then transfer to an autoclave lined with polytetrafluoroethylene, react in a constant temperature box at 160 °C for 12 h, wash, filter, and dry to obtain ultra-long manganese dioxide nanowires.

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Abstract

The invention discloses a preparation method of extra-long manganese dioxide nanowires. The method comprises using manganese sulfate as a reducing agent, potassium chlorate as an oxidizing agent, and potassium acetate and acetic acid as an additive, performing a hydrothermal reaction for 6-24 hours under 140-200 DEG C in a polytetrafluoroethylene-lined autoclave, naturally cooling, washing and filtering products, and drying to obtain the extra-long manganese dioxide nanowires with a diameter of 50-150 nanometers and a length of more than 100 [mu]m. The method can synthesize the extra-long manganese dioxide nanowires for one step, is relatively low in synthesis temperature and production cost, accords with conditions of large-scale industrial application, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanometer materials, and relates to a preparation method of superlong manganese dioxide nanowires. Background technique [0002] Manganese dioxide is an oxide with important industrial uses. It has ion exchange and molecular adsorption properties and can be used as ion sieve, molecular sieve and catalyst. At the same time, it has excellent electrochemical and magnetic properties and can be used as lithium ion Battery cathode materials and new magnetic materials. At the same time, the specific properties of nanomaterials, such as one-dimensional manganese dioxide nanowires, are conducive to the conduction of electrons. For example, it has been reported in the British "Chemical Communications" (Chemical Communications, 2011 Issue 4, page 1264) that one-dimensional manganese dioxide nanowires can be used in supercapacitors. Moreover, there is also a document in the American "Nano Letters" (Nano L...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/02B82Y40/00
Inventor 余林蓝邦林婷孙明叶飞程高成晓玲
Owner GUANGDONG UNIV OF TECH
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