Method for synthesizing carbon quantum dots by using hydrolyzed polymaleic anhydride as main raw material

A technology of polymaleic anhydride and carbon quantum dots, which is applied in the field of fluorescent materials to achieve the effects of stable chemical properties, simple preparation process, and low cost of raw materials

Inactive Publication Date: 2020-08-28
山东丰益泰和科技有限公司
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are currently no relevant patents and literature reports on the synthe

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 carbon quantum dots by using hydrolyzed polymaleic anhydride as main raw material
  • Method for synthesizing carbon quantum dots by using hydrolyzed polymaleic anhydride as main raw material
  • Method for synthesizing carbon quantum dots by using hydrolyzed polymaleic anhydride as main raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a method for synthesizing carbon quantum dots by hydrolyzing polymaleic anhydride, including the following processes:

[0039] Weigh 2.5000g HPMA (Tech, 50%) and dissolve in 46.2500g deionized water, stir well;

[0040] Add 1.2626g of ethylenediamine (Tech, 99%) solution (mass ratio HPMA / EN=1:1) to the above system, mix well, and place in a closed hydrothermal reaction synthesis kettle;

[0041] The reaction kettle was placed in an oven and heated to 180°C, reacted for 5 hours, and naturally cooled to room temperature to obtain a brownish-yellow liquid;

[0042] The above-mentioned brownish-yellow liquid passed through After filtering through the microporous membrane, the fluorescent carbon quantum dot solution is obtained.

[0043] Get this fluorescent carbon quantum dot solution dilution, by absorption spectrum scanning, the characteristic absorption peak that obtains this quantum dot is 327nm ( figure 1 ); further dilute the fluorescent c...

Embodiment 2

[0046] This embodiment provides a method for synthesizing carbon quantum dots by hydrolyzing polymaleic anhydride, including the following processes:

[0047] Weigh 3.3333g HPMA (Tech, 50%) and dissolve in 45.8334g deionized water, stir well;

[0048]Add 0.8333g of ethylenediamine (Tech, 99%) solution (mass ratio HPMA / EN=2:1) ​​to the above system, mix well, and place in a closed hydrothermal reaction synthesis kettle;

[0049] The reaction kettle was placed in an oven and heated to 180°C, reacted for 5 hours, and naturally cooled to room temperature to obtain a brownish-yellow liquid;

[0050] The above-mentioned brownish-yellow liquid passed through After filtering through the microporous membrane, the fluorescent carbon quantum dot solution is obtained.

Embodiment 3

[0052] This embodiment provides a method for synthesizing carbon quantum dots by hydrolyzing polymaleic anhydride, including the following processes:

[0053] Weigh 1.6667g HPMA (Tech, 50%) and dissolve in 46.6666g deionized water, stir well;

[0054] Add 1.6667g of ethylenediamine (Tech, 99%) solution (mass ratio HPMA / EN=0.5:1) to the above system, mix well, and place in a closed hydrothermal reaction synthesis kettle;

[0055] The reaction kettle was placed in an oven and heated to 180°C, reacted for 5 hours, and naturally cooled to room temperature to obtain a brownish-yellow liquid;

[0056] The above-mentioned brownish-yellow liquid passed through After filtering through the microporous membrane, the fluorescent carbon quantum dot solution is obtained.

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

No PUM Login to view more

Abstract

The invention discloses a method for synthesizing carbon quantum dots by using hydrolyzed polymaleic anhydride (HPMA) as a main raw material, which comprises the following steps: dissolving the hydrolyzed polymaleic anhydride (HPMA) as the raw material into deionized water, and uniformly stirring; adding an organic amine solution into the system, and carrying out a closed hydrothermal reaction at140-230 DEG C; and after the reaction is finished, cooling and filtering the reaction solution to obtain a fluorescent carbon quantum dot solution. The fluorescent carbon quantum dots obtained by themethod emit blue fluorescence under an ultraviolet light source, and have the advantages of good water solubility, stable chemical properties, simple synthesis method, low raw material cost and the like.

Description

technical field [0001] The invention belongs to the technical field of fluorescent materials, and in particular relates to a method for synthesizing carbon quantum dots by hydrolyzing polymaleic anhydride. Background technique [0002] The preparation of carbon quantum dots (CQDs) has two methods: "top-down" and "bottom-up". The top-down preparation of carbon quantum dots is to peel off large-sized carbon targets into powder; including arc discharge Many synthesis methods for CQDs, such as laser ablation method, electrochemical method, microwave heating method, etc., have been developed, but some methods require complicated equipment or complicated processing technology. The bottom-up preparation is self-assembly of small-sized carbon sources through weak interactions; the synthesis of carbon quantum dots by the "bottom-up" method mostly uses organic small molecules or oligomers as carbon sources, and the commonly used ones are Citric acid, glucose, polyethylene glycol, ure...

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): C09K11/65G01N21/64B82Y20/00B82Y30/00
CPCB82Y20/00B82Y30/00C09K11/65G01N21/643
Inventor 刘晓伟王家庚高灿柱李小明杨春丽
Owner 山东丰益泰和科技有限公司
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