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

Method for synthesizing nitrogen doped carbon quantum dot based on one-step monocomponent hydro-thermal synthesis

A technology of hydrothermal synthesis and carbon quantum dots, applied in chemical instruments and methods, nano-carbon, luminescent materials, etc., to achieve the effect of simple steps, cheap price and easy operation

Active Publication Date: 2014-01-08
SHANGHAI JIAO TONG UNIV
View PDF2 Cites 56 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these methods all need to provide carbon source and nitrogen source at the same time

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 synthesizing nitrogen doped carbon quantum dot based on one-step monocomponent hydro-thermal synthesis
  • Method for synthesizing nitrogen doped carbon quantum dot based on one-step monocomponent hydro-thermal synthesis
  • Method for synthesizing nitrogen doped carbon quantum dot based on one-step monocomponent hydro-thermal synthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Step 1, 5g of ammonium citrate is dissolved in 25mL of water, and the ammonium citrate is completely dissolved to form a homogeneous solution;

[0021] Step 2, put the reaction liquid into a 50mL hydrothermal reaction kettle, keep it warm at 160°C for 6 hours, and then cool to room temperature;

[0022] Step 3: Rotate evaporate the reacted solution to a small amount of liquid, then transfer to a silica gel chromatographic column for elution to obtain bright blue nitrogen-doped carbon quantum dots.

Embodiment 2

[0024] Step 1, dissolve 2g of ammonium citrate in 25mL of water, the ammonium citrate is completely dissolved to form a homogeneous solution;

[0025] Step 2, put the reaction liquid into a 50mL hydrothermal reaction kettle, keep it warm at 160°C for 6 hours, and then cool to room temperature;

[0026] Step 3: Rotate evaporate the reacted solution to a small amount of liquid, then transfer to a silica gel chromatographic column for elution to obtain bright blue nitrogen-doped carbon quantum dots.

Embodiment 3

[0028] Step 1, dissolve 2g of ammonium citrate in 25mL of water, the ammonium citrate is completely dissolved to form a homogeneous solution;

[0029] Step 2, put the reaction liquid into a 50mL hydrothermal reaction kettle, keep it warm at 200°C for 11 hours, and then cool to room temperature;

[0030] Step 3: Rotate evaporate the reacted solution to a small amount of liquid, then transfer to a silica gel chromatographic column for elution to obtain bright blue nitrogen-doped carbon quantum dots.

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
volumeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for synthesizing nitrogen doped carbon quantum dots based on one-step monocomponent hydro-thermal synthesis, which comprises the following steps: mixing and dissolving ammonium citrate with water, putting the mixture in a sealed reaction vessel, performing heat preservation at 140-220 DEG C for 4-48 hours, after the reaction, naturally cooling to room temperature, and separating the product by a silica gel chromatographic column to obtain the nitrogen doped carbon quantum dots. Compared with existing methods, the method of the invention adopts a single and cheap raw material, is simple in steps, easy to operate, and suitable for mass production.

Description

technical field [0001] The invention relates to a preparation method of nanometer materials, in particular to a method for hydrothermally synthesizing nitrogen-doped carbon quantum dots. Background technique [0002] In 2004, XiaoyouXu and others obtained fluorescent carbon quantum dots for the first time in the product of multi-walled carbon nanotubes synthesized by the purified arc discharge method (J.Am.Chem.Soc.2004, 126, 12736-12737.), which This discovery started an upsurge in research on carbon quantum dots. [0003] Because the scale of carbon quantum dots is between 1 and 10nm, it has quantum confinement effect and boundary effect, which can make it emit fluorescence of various colors. In addition, carbon quantum dots have the advantages of good water solubility, high quantum efficiency, strong fluorescence intensity, easy surface modification, and low biological toxicity, so they can be widely used in cell / tissue labeling, drug carriers, solar cells, and photocata...

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 Applications(China)
IPC IPC(8): C09K11/65C01B31/02C01B32/15
Inventor 杨志徐明瀚刘芸苏言杰张亚非
Owner SHANGHAI JIAO TONG 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