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Method for preparing inorganic Nano / micro tube

An inorganic nano- and micro-tube technology, which is applied in separation methods, chemical instruments and methods, welding equipment, etc., can solve the problems of inability to prepare nano-tubes with uniform morphology, and limit the application of materials, so as to avoid design problems and preparation processes. Simple and low cost effect

Inactive Publication Date: 2007-12-26
XI AN JIAOTONG UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology uses an electric field force to create tiny threads or tubing from metals that can be easily dissolved into solvents without damaging their properties. These techniques have been developed over time with different types of charged molecules being added together at specific points along the thread pathway. By controllably adjusting these steps, it becomes possible to make many new forms of material such as carbon fibre bundles, wires, films, tapes, etc., each containing thousands of atoms of certain elements arranged regularly around them.

Problems solved by technology

This patented technology describes various ways for making small cylindrical structures called microstructures that are useful in applications like chemical reactions or separating gases from liquids. There exist different techniques available depending upon how these tiny objects were made up: Chemical Vapor Deposition Method (CNDM); Electrostatic Spraying; Laser Ablative Drying System (LADS)-The technical problem addressed in this patents is finding an efficient way to make stable and concave microspheres without requiring specialized equipment and processes while also producing uniformly shaped nanoparticles containing only one type of molecules at any given size.

Method used

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  • Method for preparing inorganic Nano / micro tube
  • Method for preparing inorganic Nano / micro tube
  • Method for preparing inorganic Nano / micro tube

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preparation example Construction

[0030] The method for preparing inorganic nanometer / microtube of the present invention, carries out as follows successively:

[0031] First weigh an appropriate amount of solvent, then weigh the weak acid salt of the metal ion to prepare a concentration and polymer to prepare a polymer solution with a concentration range of 1% to 80%, and the molar ratio of the inorganic salt ion to the polymer ranges from 0.05 to 3 ;The aging temperature range of electrospinning precursor solution is -10℃~95℃;

[0032] Put the mixed solution into a constant temperature water bath for low-temperature aging, and the aging time is 0-120 days to obtain an electrospinning precursor solution;

[0033] The precursor solution was electrospun on a conventional single-tube electrospinning device, and the electrospun product was collected with a conductive metal plate covered with aluminum foil; the ambient temperature range during the electrospinning process was 0°C to 150°C, and the environment during...

Embodiment 1

[0053] First add 14g methanol and 3g ethanol solution into the reaction flask, after stirring evenly, add 1.0g Zn(CH 3 CH 2 O) 2 4H 2 O and 1.0gMn(CH 3 CH 2 O) 2 4H 2 O crystal, after stirring to completely dissolve the inorganic salt, add 2.0g of polyvinylpyrrolidone (referred to as PVP, K90, Mw=1,000,000~1,500,000) powder, after the PVP powder is completely dissolved, weigh the solution and put it in a constant temperature water bath The pot is aged at 24°C. During the aging process, the volatilized solvent is timely compensated. After the solution was aged for 20 days, the required electrospinning precursor solution was prepared. Take an appropriate amount of this electrospinning precursor solution and add it to a glass nozzle equipped with a No. 9 injection needle, turn on the power supply, and perform electrospinning at a DC voltage of 12.0 kV. The distance between the needle and the collecting plate is 9.0 cm. The temperature was 23°C and the relative humidity wa...

Embodiment 2

[0055] First add 14g methanol and 1g ethanol solution into the reaction flask, stir evenly, then add 2.0g Mn(CH 3 CH 2 O) 2 4H 2 O was added to the volumetric flask, and after the inorganic salt was completely dissolved, 2.0g of PVP (K90) powder was added and stirred. After the PVP powder was completely dissolved, the solution was weighed and placed in a constant temperature water bath for aging at 26°C. During the aging process, timely compensate for the volatilized solvent. After the solution was aged for 14 days, the electrospinning precursor solution was obtained. Take an appropriate amount of precursor solution and add it to a glass nozzle equipped with a No. 8 needle for injection, turn on the power supply, and perform electrospinning at a DC voltage of 9.0kV. The distance between the needle and the collecting plate is 10.0cm, and the electrospinning ambient temperature The temperature is 24°C and the relative humidity is 53%. A plain copper plate covered with alumi...

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Abstract

The invention discloses a new method used mono-tube electric spinning device to make inorganic nanometer tubular material. It fully utilizes coordination between the polymer and metallic ion to make the metallic ion combine with macromolecule chain hard, uses high voltage caused by electric spinning to make the metallic ion concentrate on the surface of the polymer/inorganic complex fiber which is processed by burning to remove the polymer, finally gain the corresponding inorganic nanometer/micrometer tubular material. Thus the invention has the advantages of simple manufacture technology, high yield, and suiting for large scale application.

Description

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Claims

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Application Information

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Owner XI AN JIAOTONG UNIV
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