Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of carbon dot-porous inorganic oxide composite nanofiber

A technology of composite nanofibers and inorganic oxides, applied in chemical instruments and methods, fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of fluorescence intensity reduction, agglomeration, and limit the application of carbon quantum dots, etc., to achieve simple and convenient operation, The effect of high yield

Active Publication Date: 2019-11-15
YANBIAN UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the yield of carbon quantum dots prepared by this method is not very ideal, and the prepared carbon quantum dots are prone to agglomeration after being placed for a long time, which reduces the fluorescence intensity, which limits the application of carbon quantum dots to a certain extent.

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
  • Preparation method of carbon dot-porous inorganic oxide composite nanofiber
  • Preparation method of carbon dot-porous inorganic oxide composite nanofiber
  • Preparation method of carbon dot-porous inorganic oxide composite nanofiber

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The invention provides a method for preparing carbon dot-porous inorganic oxide composite nanofibers, including: preparing a mixed solution of high molecular polymer, chitosan and inorganic oxide to obtain a spinning solution; using the spinning solution Electrospinning is performed to obtain composite nanofibers; the composite nanofibers are calcined to obtain porous inorganic oxide composite nanofibers; the carbon precursor powder and the porous inorganic oxide composite nanofibers are added to water, and water is carried out in the reactor. Thermal response.

[0022] In one of the embodiments, the process of preparing the above spinning solution includes: separately preparing chitosan solution, high molecular polymer solution and inorganic oxide solution, adding the inorganic oxide solution to the chitosan solution, and stirring uniformly to obtain Mix the solution, and then add the above-mentioned mixed solution to the high-molecular polymer solution, stir evenly, and ...

Embodiment 1

[0034] (1) Weigh a certain amount of nylon (PA) and dissolve it in formic acid, stir at room temperature for 5 hours until it is completely dissolved, and add a certain amount of chitosan (CS, molecular weight 100,000) powder to make the volume of PA and CS The ratio is 70:30;

[0035] (2) Mix absolute ethanol, tetraethyl silicate (TEOS), and hydrochloric acid, stir at a constant speed until complete hydrolysis, add to step (1) and continue to stir until complete mixing, then stand still to remove bubbles to obtain a spinning solution;

[0036] (3) Inject the spinning solution into a 20mL syringe (needle size 17G) and fix it on the electrospinning device. The fixed static voltage is 25KV, the liquid supply rate is 1mL / h, and the pole pitch is 20cm. Electrospinning is performed. Obtain composite nanofibers. Dry it. The above-mentioned fibers are calcined in a muffle furnace at 650°C for 4 hours to obtain mesoporous silica composite nanofibers.

[0037] (4) Mix 1g of corn stalk powd...

Embodiment 2

[0039] (1) Dissolve a certain amount of chitosan (molecular weight 100,000) in a 2% concentration of acetic acid aqueous solution, and stir at room temperature for 2 hours to completely dissolve;

[0040] (2) Weigh a certain amount of polyvinyl alcohol (PVA) and dissolve it in water, stir at 90°C for 6 hours until it is completely dissolved. The volume ratio of PVA to CS is 90:10;

[0041] (3) Mix absolute ethanol, tetraethyl silicate (TEOS), and hydrochloric acid, stir at a constant speed until complete hydrolysis, add to step (1) and continue stirring until completely mixed, then add to step (2) until completely mixed , Let stand to remove air bubbles to obtain electrostatic spinning solution;

[0042] (4) Inject the electrospinning solution into a 20mL syringe (needle size 17G) and fix it on the electrospinning device. The fixed static voltage is 25KV, the liquid supply rate is 0.8mL / h, and the pole pitch is 15cm for electrospinning. , Get the composite nanofiber. Dry it. Put t...

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
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a carbon dot-porous inorganic oxide composite nano fiber. The preparation method comprises the following steps: preparing a mixed solution of high-molecular polymer, chitosan, and inorganic oxides to obtain a spinning solution; using the spinning solution to carry out electrostatic spinning to obtain composite nano fibers; burning the composite nano fibers to obtain porous inorganic oxide composite nano fibers; adding carbon precursor powder and the porous inorganic oxide composite nano fibers into water, and carrying out hydrothermal reactions in a reactor.

Description

Technical field [0001] The invention relates to a carbon dot material, in particular to a method for preparing carbon dot-porous inorganic oxide composite nanofibers. Background technique [0002] Carbon Dots, also known as carbon quantum dots or carbon nanodots, are a new type of carbon nanomaterial. Compared with metal quantum dots, carbon quantum dots are non-toxic, less harmful to the environment, cheaper to manufacture, and have good optical properties, water solubility, and biocompatibility. They are used in chemistry, physics, materials, and biology. And other fields are widely concerned. At present, researchers have developed a series of new methods for preparing carbon quantum dots with excellent fluorescence properties by selecting different precursors, designing different synthetic routes and modification methods. Among them, the fluorescent carbon quantum dots are prepared by the hydrothermal synthesis method using biomass carbon precursors. For example, Zhan Hongbi...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/02C09K11/65D01F9/10
CPCC09K11/025C09K11/65D01F9/10
Inventor 孟龙月孟万王晨迪张研
Owner YANBIAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com