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Preparation method and antibacterial application of copper iron oxide and mixed nanoparticles

A copper-iron oxide and nanoparticle technology, which is applied in the fields of botanical equipment and methods, chemical instruments and methods, and applications, can solve problems such as toxicity of human cells, and achieve the effects of rapid sterilization ability and simple synthesis process.

Active Publication Date: 2022-02-01
赵奕平 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In summary, the existing problems in the prior art are: the existing silver nanoparticles or copper oxide nanoparticles are toxic to human cells

Method used

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  • Preparation method and antibacterial application of copper iron oxide and mixed nanoparticles
  • Preparation method and antibacterial application of copper iron oxide and mixed nanoparticles
  • Preparation method and antibacterial application of copper iron oxide and mixed nanoparticles

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] The present invention now passes the cuprous oxide (Cu 2 O), iron oxide (Fe 2 o 3 ) and copper iron oxide (CuFeO 2 ) nanoparticles (called Cu x Fe y o z NPs) have high antibacterial activity against many Gram-positive and negative bacteria. The material can also inhibit the growth of bacteria in the growth medium. Cytotoxicity assays on mouse fibroblasts showed that these nanoparticles were less toxic to mammalian cells at low working concentrations (≤1 mg / ml).

[0035] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0036...

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Abstract

The invention belongs to the technical field of nanoparticle preparation, and discloses a preparation method and antibacterial application of copper iron oxide and mixed nanoparticle. A certain proportion of Cu(NO 3 ) 2 ·3H 2 O and Fe(NO 3 ) 3 9H 2 O was dissolved in deionized water; NaOH solution was added dropwise to the mixture under constant stirring; then formaldehyde was added to the mixture, and the resulting solution was transferred to a silicon carbide (SiC) reaction tube and reacted in a microwave chamber to produce copper Iron oxides and mixed nanoparticles; after cooling, the synthesized samples were centrifuged and washed with deionized water; the collected samples were then placed in an oven to dry overnight. Experiments of the present invention show that they have high-efficiency antibacterial properties to at least 9 kinds of important human pathogenic bacteria, such as can be used in 15 minutes with 10 9 kills E. coli at a logarithmic reduction; after 4 hours of incubation, about 10 8 Log reduction.

Description

technical field [0001] The invention belongs to the technical field of nanoparticle preparation, and in particular relates to a preparation method and antibacterial application of copper iron oxide and mixed nanoparticle. Background technique [0002] Currently, the state of the art in the industry is that infectious disease is the second leading cause of death in the world (and third in the United States) and the leading cause of disability-adjusted life years globally. Infections caused by bacteria, including those caused by Salmonella, E. coli or Shigella, make up a large proportion of infectious diseases. For example, recent outbreaks of Listeria infection in ham and Salmonella infection in ground beef have seen Penicillin and other antibiotics essential to treating infections caused by the bacteria, but increased antibiotic resistance that has been observed in many pathogens has become a very serious public health problem. Even if resistance is not a factor limiting t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/20A01N59/16A01P1/00B01J23/745C02F1/72A61K33/34A61K9/12A61P31/04A61P17/02A61L15/18A61L15/46A61L31/08A61L31/16A61K33/26C02F101/30C02F101/34C02F101/38
CPCA01N59/20A01N59/16B01J23/745B01J23/002B01J35/004C02F1/725C02F1/72A61K33/34A61K33/26A61K9/12A61K9/0014A61P31/04A61P17/02A61L15/18A61L15/46A61L31/088A61L31/16C02F2101/308C02F2101/34C02F2101/38C02F2101/40C02F2305/023A61L2300/102A61L2300/404A61L2300/606A61K2300/00Y02A50/30
Inventor 赵奕平朱露
Owner 赵奕平
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