Method for preparing TiO2@SiO2 coaxial nanotube

A technology of silicon dioxide and titanium dioxide, which is used in the preparation of spinning solutions, chemical characteristics of fibers, conjugated artificial filaments, etc.

Inactive Publication Date: 2012-04-04
CHANGCHUN UNIV OF SCI & TECH
View PDF6 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, no three-layer coaxial electrospinning technology has be

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing TiO2@SiO2 coaxial nanotube
  • Method for preparing TiO2@SiO2 coaxial nanotube
  • Method for preparing TiO2@SiO2 coaxial nanotube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] Example: After stirring a mixture of sesame oil and sorbitan oleate Span-80 at a volume ratio of 1:1 at room temperature for 3 h, an equal volume of butyl titanate Ti(OC 4 h 9 ) 4 , continue to stir for 6 hours and then stand still for 3 hours to obtain a uniform [sesame oil+Span-80+Ti(OC 4 h 9 ) 4 ] mixed solution, as the middle layer spinning solution, wherein the mass percentages of butyl titanate, sesame oil and sorbitan oleate are respectively 50.1%, 23.9% and 26.0%; polyvinylpyrrolidone PVP is added to an appropriate amount of water ethanol C 2 h 5 OH and chloroform CHCl 3 After magnetically stirring for 3 hours at room temperature, add a certain amount of ethyl orthosilicate TEOS, continue to stir for 6 hours and then let it stand for 3 hours to obtain a uniform and transparent [PVP+TEOS+C 2 h 5 OH+CHCl 3 ] solution, as the shell spinning solution, wherein the mass percentages of PVP, TEOS, ethanol and chloroform are respectively 8.0%, 14.7%, 61.7% and 1...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Lengthaaaaaaaaaa
Login to view more

Abstract

Belonging to the technical field of nano-material preparation, the invention relates to a method for preparing a TiO2@SiO2 coaxial nanotube. The method comprises three steps: (1) spinning solution preparation: mixing polyvinylpyrrolidone, ethyl orthosilicate, absolute ethanol and chloroform so as to form a shell layer spinning solution, and mixing sesame oil, sorbitan oleate and butyl titanate soas to form an intermediate layer spinning solution; (2) preparation of a [sesame oil+Span-80+Ti(OC4H9)4]@[PVP+TEOS] coaxial hollow composite fiber: employing a coaxial electrospinning technology and using a three-layer coaxial spinning head, placing the shell layer spinning solution in an outer tube of the apparatus, putting the intermediate layer spinning solution in an intermediate tube of the apparatus, and leaving the inner tube empty and communicated with the atmosphere; (3) preparation of a TiO2@SiO2 coaxial nanotube: subjecting the coaxial hollow composite fiber to heat treatment so asto obtain the TiO2@SiO2 coaxial nanotube with an average diameter of 650nm. For the obtained TiO2@SiO2 coaxial nanotube, the hollow part has a diameter of 530nm, the inner wall is crystalline TiO2 and has thickness of 30nm, while the shell layer is non-crystalline SiO2 and has thickness of 30nm and length of over 20 micrometers. The method provided in the invention is simple and practicable, thusboasting wide application prospects.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a method for preparing coaxial titanium dioxide and silicon dioxide nanotubes. Background technique [0002] The preparation and properties research of one-dimensional nanomaterials such as nanowires, nanobelts, nanotubes and nanocables is one of the frontier hotspots in the field of material science research. In particular, nanotubes have a larger specific surface area, so they are widely used in protein analysis, cell manipulation, artificial blood vessels, diagnostics, fluorescence correlation spectroscopy, catalytic industry, sensors, tap water purification, hydrogen storage industry, energy conversion and environmental protection. It has a wide range of applications and has attracted great attention from the scientific community. [0003] Since the discovery of carbon nanotubes by Iijima in 1991, one-dimensional nanomaterials such as nanowires, nanotubes, n...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): D01F8/18D01D5/00D01D1/02D01D4/02D01D10/02
Inventor 董相廷徐淑芝盖广清王进贤于文生刘桂霞
Owner CHANGCHUN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap