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

Rare earth oxide synergistic nano-silver antibacterial agent and preparation method thereof

A rare earth oxide and nano-silver technology, which is applied in the field of antibacterial materials, can solve the problems of poor weather resistance, high antibacterial cost, and easy reduction and agglomeration, and achieve high antibacterial efficacy, high-efficiency antibacterial effect, and the effect of expanding the scope of application

Active Publication Date: 2020-03-13
XIAMEN INST OF RARE EARTH MATERIALS
View PDF31 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most widely used inorganic antibacterial agents are mainly silver-based antibacterial agents. Although silver-based antibacterial agents have the characteristics of high bactericidal efficiency, strong antibacterial activity, wide antibacterial range, long-lasting antibacterial, and non-volatile, there are high antibacterial costs in the actual application process. , Easy to migrate from the matrix to cause failure, poor weather resistance, sensitive to light and heat, easy to be reduced and agglomerated, etc.
[0003] CN 102763678 B and CN 1313005C respectively adopt zirconium phosphate and sodium zirconium hydroxyphosphate as the method of carrying silver on the carrier. Although some defects of silver antibacterial can be overcome, zirconium phosphate and sodium zirconium hydroxyphosphate carrier themselves do not have antibacterial function, so in The antibacterial efficiency will be reduced

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
  • Rare earth oxide synergistic nano-silver antibacterial agent and preparation method thereof
  • Rare earth oxide synergistic nano-silver antibacterial agent and preparation method thereof
  • Rare earth oxide synergistic nano-silver antibacterial agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) 0.5g silver nitrate, 1g polyvinylpyrrolidone and 20g deionized water are mixed into the first solution, and 0.1g sodium borohydride and 10g deionized water are mixed into the second solution;

[0035] (2) Disperse the first solution evenly under magnetic stirring at 30°C, and then add the second solution dropwise to the first solution at a constant speed within 1 hour. times, to obtain nano-silver sol;

[0036] (3) 60g cerium nitrate, 60g citric acid and 250g deionized water are mixed with the third solution;

[0037] (4) The third solution was magnetically stirred at 30° C. for 3 hours to obtain a rare earth wet gel;

[0038] (5) blending and stirring the above-mentioned nano-silver sol and the above-mentioned rare earth wet gel at 40° C. for 2 hours to obtain a mixed wet gel;

[0039] (6) Dry the above mixed wet gel in a constant temperature drying oven at 150°C for 3 hours to obtain a dry gel;

[0040] (7) Put the above dry gel into a muffle furnace after crus...

Embodiment 2

[0042] (1) 1g silver nitrate, 2g chitosan and 25g deionized water are mixed into the first solution, and 0.15g ascorbic acid and 15g deionized water are mixed into the second solution;

[0043] (2) Stir the first solution at 30°C to disperse evenly, and then add the second solution dropwise to the first solution at a constant speed within 1.5 hours. After the addition, keep it warm for 3 hours, and then wash it centrifugally with deionized water. 3 times to obtain nano-silver sol;

[0044] (3) 40g neodymium sulfate, 40g zinc citrate and 150g deionized water are mixed with the third solution;

[0045] (4) The third solution was magnetically stirred at 15° C. for 2 hours to obtain a rare earth wet gel;

[0046] (5) blending and stirring the above-mentioned nano-silver sol and the above-mentioned rare earth wet gel at 15° C. for 1 hour to obtain a mixed wet gel;

[0047] (6) Dry the above mixed wet gel in a constant temperature drying oven at 120°C for 2 hours to obtain a dry g...

Embodiment 3

[0050] (1) 1g silver nitrate, 2g chitosan and 25g deionized water are mixed into the first solution, and 0.15g sodium biborate and 15g deionized water are mixed into the second solution;

[0051] (2) Stir the first solution at 30°C to disperse evenly, and then add the second solution dropwise to the first solution at a constant speed within 1.5 hours. After the addition, keep it warm for 3 hours, and then wash it centrifugally with deionized water. 3 times to obtain nano-silver sol;

[0052] (3) 30g lanthanum nitrate, 30g citric acid and 180g deionized water are mixed with the third solution;

[0053] (4) The third solution was magnetically stirred at 60° C. for 4 hours to obtain a rare earth wet gel;

[0054] (5) blending and stirring the above-mentioned nano-silver sol and the above-mentioned rare earth wet gel at 100° C. for 4 hours to obtain a mixed wet gel;

[0055] (6) drying the above mixed wet gel in a constant temperature drying oven at 200°C for 4 hours to obtain a...

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 rare earth oxide synergistic nano-silver antibacterial agent and a preparation method thereof. The permeability of cell membrane can be changed by utilizing rare earth ions,so that silver ions can enter into bacteria more easily, and antibacterial agent antibacterial performance is improved. According to the invention, a nano-silver sol and a rare earth wet gel compoundare respectively prepared by adopting synthesis processes of oxidation-reduction method and sol-gel method; then pre-compounding is carried out in a wet gel; subsequently calcination is carried out toobtain stable nano-silver and a rare earth oxide compound; rare earth oxide and nano-silver unique antibacterial effect is achieved; the defects of light and heat sensitivity, easy discoloration, easy migration and failure, high antibacterial cost and the like of silver antibacterial agents are effectively avoided; in addition, rare earth has certain antibacterial effect, has higher antibacterialefficiency compared with zeolite, phosphate, white carbon black and the like used as a silver-loaded carrier, and the application range of silver series antibacterial agents is widened greatly.

Description

technical field [0001] The invention belongs to the technical field of antibacterial materials, and in particular relates to a rare earth oxide synergistic nano-silver antibacterial agent and a preparation method thereof. Background technique [0002] Antibacterial materials refer to a class of functional materials that can kill or inhibit the proliferation of non-beneficial bacteria. They are compounded into rubber, plastic, ceramics, cotton fabrics, coatings and other substrates to make antibacterial products, which can effectively prevent bacteria. , the invasion and spread of viruses, and provide people with a healthy living environment. Antibacterial materials can be divided into three categories: natural antibacterial agents, organic antibacterial agents and inorganic antibacterial agents. Among them, inorganic antibacterial agents have both the advantages of organic antibacterial agents and natural antibacterial agents, so inorganic antibacterial agents are the futur...

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): A01N59/16A01N25/08A01P1/00B82Y30/00B82Y40/00
CPCA01N59/16A01N25/08B82Y30/00B82Y40/00
Inventor 宋立军吴银财林凤龙陈建任
Owner XIAMEN INST OF RARE EARTH MATERIALS
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