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Bead chain manganese borate Mn2BO3 one-dimensional nano-fiber and preparation method thereof

A technology of nanofibers and fibers, applied in the field of manganese borate Mn2OBO3 one-dimensional nanomaterials and its preparation

Inactive Publication Date: 2012-08-15
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, no manganese borate (Mn 2 OBO 3 )Related reports on one-dimensional nanofibers

Method used

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  • Bead chain manganese borate Mn2BO3 one-dimensional nano-fiber and preparation method thereof
  • Bead chain manganese borate Mn2BO3 one-dimensional nano-fiber and preparation method thereof
  • Bead chain manganese borate Mn2BO3 one-dimensional nano-fiber and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. Prepare the precursor electrospinning solution, use manganese acetate as the manganese source, boric acid as the boron source, polymer polyvinylpyrrolidone (PVP) as the complex, and absolute ethanol as the solvent, and the mixed solution is stirred by magnetic force After more than 10h, static aging, waiting for electrospinning.

[0018] 2. Conduct electrospinning. Take the electrospinning precursor solution and add it to the spinner made of glass syringe. The injection needle (0.8mm inner diameter) is used as the spinning nozzle, the electrospinning voltage is 12kV, and the vertical distance between the nozzle and the collecting plate is 10cm. A white non-woven fabric-like PVP / [Mn(CH 3 COO) 2 +H 3 BO 3 ] The composite fiber membrane was dried at 80°C.

[0019] 3. Heat treatment. Put the electrospun composite fibers into a crucible and sinter in a muffle furnace to remove organic components and residual solvents to obtain an inorganic phase. The heating rate is...

Embodiment 2

[0021] 1. Prepare the precursor electrospinning solution, use manganese acetate as the manganese source, boric acid as the boron source, polymer polyvinylpyrrolidone (PVP) as the complex, and absolute ethanol as the solvent, and the mixed solution is stirred by magnetic force After more than 10h, static aging, waiting for electrospinning.

[0022]2. Conduct electrospinning. Take the electrospinning precursor solution and add it to the spinner made of glass syringe. The injection needle (0.8mm inner diameter) is used as the spinning nozzle, the electrospinning voltage is 12kV, and the vertical distance between the nozzle and the collecting plate is 10cm. A white non-woven fabric-like PVP / [Mn(CH 3 COO) 2 +H 3 BO 3 ] The composite fiber membrane was dried at 80°C.

[0023] 3. Heat treatment. Put the electrospun composite fibers into a crucible and sinter in a muffle furnace to remove organic components and residual solvents to obtain an inorganic phase. Stay at a constant ...

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Abstract

The invention relates to a manganese borate (Mn2BO3) one-dimensional nano-material and a preparation method of the nano-material, belonging to the technical field of the nano-material. The existing Mn2BO3 material is in a state of blocks or powder, and Mn2BO3 with a one-dimensional nano-structure is not reported. The method belongs to an electrostatic spinning method, and comprises the three steps of: 1. preparing an electric spinning solution by taking manganese acetate as a manganese source, boric acid as a boron source, polymer polyvinylpyrrolidone (PVP) as a high polymer template and absolute ethyl alcohol as solvent; 2. preparing organic / inorganic complex fiber by electric spinning, wherein the electric spinning parameters are as follows: electric spinning voltage is 10-12kV, and the vertical distance between a spray head and a collection plate is 10cm; and 3. preparing manganese borate nano-fiber by adopting a heat treatment method, wherein the technical parameters are as follows: the sintering temperature is 700 DEG C or 800 DEG C, the sintering time is 2h and the heating rate is 2 DEG C / min. The prepared Mn2BO3 nano-fiber has a bead chain structure, and has the average diameter of 230-290nm and the length of at least more than dozens of microns.

Description

technical field [0001] The present invention relates to a kind of manganese borate Mn 2 OBO 3 One-dimensional nanomaterials and preparation methods thereof, Mn with a bead-like one-dimensional nanostructure prepared by electrospinning 2 OBO 3 A nanowire belongs to the technical field of nanomaterials. Background technique [0002] mn 2 OBO 3 It is a mixed valence transition metal borate with a Warwickite structure. In 1995, the R.Norrestam research group synthesized Mn for the first time 2 OBO 3 Crystals and a detailed description of the crystal structure. in Mn 2 OBO 3 In crystal, MnO 6 Octahedral by means of BO 3 Groups are linked to each other by common vertices. Since Mn has two valence states, that is, Mn 2+ and Mn 3+ , so the unit cell contains two unequal MnO 6 Octahedral complex group, namely Mn (2+) o 6 and Mn (3+) o 6 octahedron. where Mn (3+) o 6 The Jahn-Teller effect produced by the twisting of the octahedron along the axial direction indi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B35/12B82Y40/00D01F9/10
Inventor 李霜许大鹏
Owner CHANGCHUN UNIV OF SCI & TECH
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