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

Simple method for preparing nano-silver based on plumeria rubra extracting solution

A frangipani and nano-silver technology, applied in the biological field, can solve the problems of high preparation technology requirements and environmental pollution, and achieve the effects of strong operability, less pollution, and mild reaction conditions

Active Publication Date: 2021-11-09
GUANGDONG INST OF MICROBIOLOGY GUANGDONG DETECTION CENT OF MICROBIOLOGY
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, chemical methods are more common, but most of the reducing agents and stabilizers used are toxic reagents, which seriously pollute the environment. At the same time, the reaction conditions need to be strictly controlled, and the requirements for the preparation technology are very high.

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
  • Simple method for preparing nano-silver based on plumeria rubra extracting solution
  • Simple method for preparing nano-silver based on plumeria rubra extracting solution
  • Simple method for preparing nano-silver based on plumeria rubra extracting solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The frangipani leaves were picked, washed three times with ultrapure water, dried at 65° C. for 2 days, pulverized by a pulverizer, and passed through a 40-mesh sieve to obtain frangipani powder. Weigh 6g of frangipani powder, add 180mL of 70% ethanol aqueous solution, heat reflux at 75°C for 2h, keep stirring during the period, cool to room temperature; 350W, ultrasonic 3sec off and 3sec in an ice bath for 20min, 200 mesh gauze to filter the extract , filter the extract with a 0.22 μM membrane filter. AgNO with a concentration of 8mmol / L 3 The solution and the frangipani extract were mixed according to a volume ratio of 2:1, heated and stirred at 60° C. in the dark for 30 minutes to prepare a nano-silver solution.

[0029] determined, as figure 1 As shown, the nano-silver solution prepared in this embodiment has a silver ion particle size of 1-36 nm, and an average particle size of 10 nm.

Embodiment 2

[0031] The frangipani leaves were picked, washed three times with ultrapure water, dried at 65° C. for 2 days, pulverized by a pulverizer, and passed through a 40-mesh sieve to obtain frangipani powder. Weigh 6g of frangipani powder, add 180mL of 70% ethanol aqueous solution by volume fraction, heat reflux at 75°C for 2h, keep stirring during this period, cool to room temperature; 350W, ultrasonication for 3sec and off for 3sec in an ice bath for 20min, and 200 mesh gauze to filter and extract Liquid, the extract was filtered through a 0.22 μM membrane filter. AgNO with a concentration of 8mmol / L 3 The solution and the frangipani extract were mixed according to a volume ratio of 7:1, heated and stirred at 70° C. in the dark for 15 minutes to prepare a nano-silver solution.

[0032] determined, as figure 2 As shown, the nano-silver solution prepared in this embodiment has a silver ion particle size of 1-57 nm, and an average particle size of 15 nm.

Embodiment 3

[0034] The frangipani leaves were picked, washed three times with ultrapure water, dried at 65° C. for 2 days, pulverized by a pulverizer, and passed through a 40-mesh sieve to obtain frangipani powder. Weigh 6g of frangipani powder, add 180mL of 70% ethanol aqueous solution, heat reflux at 75°C for 2h, keep stirring during the period, cool to room temperature; 350W, ultrasonic 3sec off and 3sec in an ice bath for 20min, and 200 mesh gauze to filter the extract , filter the extract with a 0.22 μM membrane filter. AgNO with a concentration of 8mmol / L 3 The solution and the frangipani extract were mixed according to a volume ratio of 8:1, heated and stirred at 75° C. in the dark for 1 hour to prepare a nano-silver solution.

[0035] determined, as image 3 As shown, the nano-silver solution prepared in this embodiment has a silver ion particle size of 1-19 nm, and an average particle size of 5 nm.

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 diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a simple method for preparing nano-silver based on a plumeria rubra extracting solution. A plumeria rubra ethanol extracting solution is mixed with a silver ion solution to react to generate the nano-silver. The plumeria rubra extracting solution is used for reducing silver ions to prepare the elementary substance nano-silver. The method can prepare nano-silver particles with the particle size of 1-57nm. According to the method, the plumeria rubra extracting solution is used for preparing the nano-silver particles, and the preparation method is simple, easy to implement, high in operability and low in cost. The plumeria rubra extracting solution serves as a reducing agent and a stabilizing agent at the same time, other chemical components do not need to be added in the reaction process, and a large number of nano-silver particles are prepared within a short time. The method is a simple and environmental-friendly nano-silver preparation method.

Description

Technical field: [0001] The invention belongs to the field of biotechnology, and in particular relates to a simple method for preparing nano-silver based on frangipani extract. Background technique: [0002] Nano silver (Silver nanoparticles, referred to as Ag-NPs) is called a new generation of antibacterial agent in the 21st century. It has broad-spectrum and high-efficiency antibacterial performance, long-lasting antibacterial, strong permeability, safe and non-toxic, repairing and regenerating, and is not easy to make microorganisms Advantages of developing drug resistance. Nanosilver has been widely used in various medical materials, such as wound dressings, surgeon's masks, medical catheters, medical surgical instruments, implanted in human tissues, etc. Based on the excellent antibacterial performance of nano-silver, its application prospect is broad, and it has a wide range of market demands in the fields of daily necessities, medical and health care, building materi...

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): B22F9/24B22F1/00B82Y5/00B82Y40/00
CPCB22F9/24B82Y5/00B82Y40/00
Inventor 张志清李文茹谢小保刘德赞姚俊伟张丹丹施庆珊
Owner GUANGDONG INST OF MICROBIOLOGY GUANGDONG DETECTION CENT OF MICROBIOLOGY
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