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

Method for preparing iron oxide nanoparticles by utilizing tea leaves

A technology of iron oxide nanoparticles and particles, applied in the field of materials, can solve the problems of difficult control of size and performance, limited application, low biocompatibility of iron oxide nanoparticles, etc., and achieve low cost, high immobilization rate, and good cell compatibility Effect

Active Publication Date: 2019-06-14
XINYANG NORMAL UNIVERSITY
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All in all, the iron oxide nanoparticles prepared by the existing preparation methods have defects such as

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 preparing iron oxide nanoparticles by utilizing tea leaves
  • Method for preparing iron oxide nanoparticles by utilizing tea leaves
  • Method for preparing iron oxide nanoparticles by utilizing tea leaves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing iron oxide nanoparticles by using tea leaves, comprising the following steps:

[0029] 1) 7.39g FeCl 3 •6H 2 O (4.44g FeCl 3 ) and 2.714g FeCl 2 • 4H 2 O (1.732g FeCl 2 ) was dissolved in 80mL tea extract, in N 2 Under protection, at a temperature of 70°C and a stirring speed of 1000 rpm, after reflux for 30 minutes, add 20 mL of ammonia water, reflux for 30 minutes, then add 4 mL of 2 mg / mL citric acid, reflux for 60 minutes, cool to room temperature, and obtain a black mixture;

[0030] 2) Wash the black mixture in step 1) with ultrapure water, and separate with a permanent magnet to obtain iron oxide nanoparticles.

Embodiment 2

[0032] A method for preparing iron oxide nanoparticles by using tea leaves, comprising the following steps:

[0033] 1) 7.39g FeCl 3 •6H 2 O (4.44g FeCl 3 ) and 2.714g FeCl 2 • 4H 2 O (1.732g FeCl 2 ) was dissolved in 80mL tea extract, in N 2 Under protection, at a temperature of 60°C and a stirring speed of 900 rpm, after reflux for 40 minutes, add 15 mL of ammonia water, reflux for 40 minutes, then add 4 mL of 2 mg / mL citric acid, reflux for 70 minutes, cool to room temperature, and obtain a black mixture;

[0034] 2) Wash the black mixture in step 1) with ultrapure water, and separate with a permanent magnet to obtain iron oxide nanoparticles.

Embodiment 3

[0036] A method for preparing iron oxide nanoparticles by using tea leaves, comprising the following steps:

[0037] 1) 7.39g FeCl 3 •6H 2 O (4.44g FeCl 3 ) and 2.714g FeCl 2 • 4H 2 O (1.732g FeCl 2 ) was dissolved in 80mL tea extract, in N 2 Under protection, at a temperature of 70°C and a stirring speed of 1100 rpm, after reflux for 20 minutes, add 20 mL of ammonia water, reflux for 20 minutes, then add 5 mL of 2 mg / mL citric acid, reflux for 50 minutes, cool to room temperature, and obtain a black mixture;

[0038] 2) Wash the black mixture in step 1) with ultrapure water, and separate with a permanent magnet to obtain iron oxide nanoparticles.

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 method for preparing iron oxide nanoparticles by utilizing tea leaves. The method comprises the following steps: 1) dissolving iron hydrate into a tea water extracting solution; after refluxing for 20 to 40 min under the protection of N2 and under the conditions that the temperature is 60 to 100 DEG C and the stirring speed is 900 to 1100 rpm, adding a precipitating agentand refluxing for 20 to 40 min; then adding a stabilizer and refluxing for 50 to 70 min; cooling to room temperature to obtain a black mixture, wherein the iron hydrate is a mixture of FeCl3.6H2O andFeCl2.4H2O and the stabilizer is citric acid; 2) washing and separating a black mixture in step 1) to obtain the iron oxide nanoparticles. According to the method disclosed by the invention, the citric acid is fixed on the nanoparticles through a homogeneous reaction manner and influences on the immobilization rate of the nanoparticles, caused by an immobilized carrier structure factor in non-homogeneous reaction, are overcome; the obtained nanoparticles have a high immobilization rate and immobilization reaction of the citric acid and reduction reaction of the tea water extracting solution are carried out step by step; when the citric acid is immobilized, the nanoparticles are molded and a preparation process is simplified; and the prepared iron oxide nanoparticles have good monodispersity and cellular compatibility.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a method for preparing iron oxide nanoparticles from tea leaves. Background technique [0002] Tea leaves, which refer to the leaves and buds of tea trees, are currently the most used active medicine in the world, and have the advantages of high water solubility, low toxicity and biocompatibility. Tea Polyphenols (Tea Polyphenols) is a class of soluble components with the most content in tea, and it is also one of the main substances for tea to exert its health care effects, such as: caffeine, theanine, tea saponin, linalool, catechin, etc. , and catechins can also remove dangerous free radicals in the body and prevent the development of various diseases. [0003] At present, researchers at home and abroad have developed a variety of methods to prepare iron oxide nanoparticles, such as: high-temperature pyrolysis of organometallic precursors, synthesis of highly mo...

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): C01G49/06B82Y40/00
Inventor 聂磊张明慧孙韶兰侯孟娟张莹莹董婧孙萌袁红雨韩艳婷陈世锋
Owner XINYANG NORMAL UNIVERSITY
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