Method for preparing NiO@SiO2@TiO2 coaxial three-layer nano cable

A nano-cable, coaxial electrospinning technology, used in the manufacture of coaxial cables, spinning solution preparation, filament/wire forming, etc.

Inactive Publication Date: 2011-09-21
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, no coaxial electrospinning technology has been used to prepare NiO@SiO 2 @TiO 2 Related reports on coaxial three-layer nano-cable

Method used

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  • Method for preparing NiO@SiO2@TiO2 coaxial three-layer nano cable
  • Method for preparing NiO@SiO2@TiO2 coaxial three-layer nano cable
  • Method for preparing NiO@SiO2@TiO2 coaxial three-layer nano cable

Examples

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Embodiment

[0019] Embodiment: nickel acetate tetrahydrate Ni(CH 3 COO) 2 4H 2 O and polyvinylpyrrolidone PVP (molecular weight: 90,000) were added to N, N-dimethylformamide DMF, magnetically stirred at room temperature for 6 hours, and left to stand for 3 hours to form a core spinning solution. The mass percent of each substance is: Ni(CH 3 COO) 2 4H 2 O is 7%, PVP is 11%, DMF is 82%; the (C 2 h 5 O) 4 Si and PVP added to CH 3 CH 2 In OH, under room temperature magnetic stirring 6h, and leave standstill 3h, namely form the middle layer spinning solution, the mass percent of each material in the middle layer spinning solution is: (C 2 h 5 O) 4 Si is 31%, PVP is 17%, CH 3 CH 2 OH is 52%; Butyl titanate Ti(OC 4 h 9 ) 4 , PVP and glacial acetic acid CH 3 Add COOH to absolute ethanol CH 3 CH 2 OH, magnetically stirred at room temperature for 6 hours, and left to stand for 3 hours to form a shell spinning solution. The mass percentage of each substance in the shell spinning ...

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Abstract

The invention relates to a method for preparing a NiO@SiO2@TiO2 coaxial three-layer nano cable and belongs to the technical field of preparation of nano materials. The method comprises three steps of: (1) preparing spinning solution, namely adding 4-H2O nickel acetate and polyvinylpyrrolidone (PVP) into N,N-dimethylformamide (DMF) and forming core spinning solution, adding tetraethoxysilane and PVP into ethanol and forming middle spinning solution, and adding tetrabutyl titanate, PVP and glacial acetic acid into the ethanol and forming shell spinning solution; (2) preparing [Ni(CH3COO)2+PVP]@[(C2H5O)4Si+PVP]@[Ti(OC4H9)4+CH3COOH+PVP] precursor compound cable, namely adopting a coaxial electrostatic spinning technology and using a coaxial three-layer spinning nozzle under voltage of 17kV, acuring distance of 15 centimeters, room temperature of 21 to 25 DEG C, relative humidity of 50 to 62 percent; and (3) preparing the NiO@SiO2@TiO2 coaxial three-layer nano cable, namely thermally treating the precursor compound cable at a temperature rising rate of 1 DEG C per minute, preserving the temperature for 8 hours at 800 DEG C, reducing the temperature at the speed of 1 DEG C per minute to 200 DEG C and naturally cooling to room temperature so as to obtain the NiO (core) @SiO2 (middle)@TiO2 (shell) coaxial three-layer nano cable, wherein the diameter of the NiO@SiO2@TiO2 coaxial three-layer nano cable is 200 to 250 nanometers; and the length of the cable is larger than 300 microns.

Description

technical field [0001] The invention relates to the technical field of preparation of inorganic nanomaterials, in particular to a NiO@SiO 2 @TiO 2 Preparation method of coaxial three-layer nanocable. Background technique [0002] The preparation and properties of one-dimensional nanostructured materials are one of the frontier hotspots in the field of material science research. Nanocables (Nanocables) have attracted great attention in recent years because of their unique properties, rich scientific connotations, broad application prospects and important strategic positions in future nanostructure devices. The research on coaxial nano-cables started in the mid-1990s, and developed rapidly after 2000. So far, people have successfully prepared hundreds of coaxial nano-cables by using different synthesis methods and different types of materials, such as: Fe / C, Zn / ZnO, C / C, SiC / C, SiGaN / SiO x N y And the three-layer structure of Fe-C-BN and α-Si 3 N 4 -Si-SiO 2 Wait. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D01D5/34D01D1/02D01F8/18H01B13/016
Inventor 董相廷宋超王进贤于文生刘桂霞徐佳
Owner CHANGCHUN UNIV OF SCI & TECH
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