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

Green preparation method of copper nano particles based on citrus pectin and application of copper nano particles

A copper nano and pectin technology, applied in the field of green preparation of copper nanoparticles, can solve problems such as few reports, and achieve the effects of short reaction time, avoiding the use of toxic reducing agents, and broad-spectrum anti-bacteria and mold.

Active Publication Date: 2019-08-09
GUILIN UNIVERSITY OF TECHNOLOGY
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the preparation of AgNPs and AuNPs from pectin has been reported, there are few reports on the preparation of CuNPs from pectin.

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
  • Green preparation method of copper nano particles based on citrus pectin and application of copper nano particles
  • Green preparation method of copper nano particles based on citrus pectin and application of copper nano particles
  • Green preparation method of copper nano particles based on citrus pectin and application of copper nano particles

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] A kind of preparation method of copper nanoparticles based on citrus pectin of the present invention comprises the following steps:

[0026] Copper chloride is used as copper precursor, alkali-soluble pectin is used as stabilizer and reducing agent, ascorbic acid is also used as reducing agent, copper nanoparticles are synthesized by microwave assistance, and nano copper powder is obtained by high-speed centrifugation. To overcome the deficiencies of the prior art, a method for preparing copper nanoparticles based on citrus pectin with green environmental protection, low toxicity, low cost and high yield and its application are provided.

Embodiment 1

[0028] A kind of preparation method of copper nanoparticles based on citrus pectin of the present embodiment, comprises the following steps:

[0029] (1) Take 10mL 0.015mol / L CuCl 2 Put into a 50mL Erlenmeyer flask;

[0030] (2) Add 10 mL of 0.2% (w / v) pectin solution containing 5 g / L sodium hydroxide, and stir evenly;

[0031] (3) Add 2mL of 10% (w / v) ascorbic acid and stir well;

[0032] (4) Put the reaction reagent into a microwave oven with a power of 320W and heat it for 3 minutes;

[0033] (5) After bottling the obtained flocculent liquid and its precipitate and standing for 6 hours, filter the obtained supernatant;

[0034] (6) Take the filtered liquid and centrifuge at a high speed, the centrifugation condition is 10000rpm, the centrifugation time is 10min, remove the supernatant, add an equal volume of distilled water for ultrasonication, and repeat the centrifugation three times;

[0035] (7) drying the product of step (6) at 50° C. overnight, and the obtained re...

Embodiment 2

[0039] This embodiment is roughly the same as Example 1, except that the concentration of sodium hydroxide (step (2)) is different, which are respectively 0g / L, 1g / L, 2g / L, 3g / L, 4g / L, 6g / L.

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
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of copper nano particles based on citrus pectin, and belongs to the field of nano materials. According to the preparation method, copper chloride is adopted as a copper precursor, pectin dissolved by sodium hydroxide serves as a stabilizer and a reducing agent, meanwhile, ascorbic acid is also used as a reducing agent, the copper nano particles are synthesized through simple microwave assistance to obtain a reddish brown copper nano-liquid, and finally, the powder copper nano particles are obtained through high-speed centrifugation, washing and drying. Under ultraviolet visible light, the maximum absorption peak of the nano particles is 590 nm. Meanwhile, the invention further provides application of the copper nano particles based on the citruspectin in the bacteriostasis field. The copper nano particles have the advantages of good dispersibility, high safety performance and the like. The method is simple in production process, green and environment-friendly, and has a wide prospect in the field of medical bacteriostasis.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a green preparation method and application of citrus pectin-based copper nanoparticles. Background technique [0002] Nanoparticles refer to those particles that show different properties from bulk materials due to the reduction of particle size. The particle size is generally less than 100nm. It is a typical mesoscopic system with a series of novel physical and chemical properties. It has a wide range of applications in the fields of medicine, biotechnology, optics and catalysis. Among the numerous metal nanoparticles, copper nanoparticles (CuNPs) have attracted more and more attention due to their low cost, excellent optical, medical, catalytic, electrical, thermal conductivity and antibacterial properties, but they are prone to agglomeration and oxidation. The characteristics become the bottleneck of preparation. During the past decades of research, many ef...

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): B22F9/24B22F1/00A01N59/20A01P1/00A01P3/00B82Y30/00B82Y40/00
CPCB22F9/24A01N59/20B82Y30/00B82Y40/00B22F1/054Y02A50/30
Inventor 李培骏梁金叶单杨黄盈彭明芳卢慧李东阳陶丽君
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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