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Preparation method of metal oxide doped nanoparticle, dispersoid or powder for resisting bacteria and preventing mildew

A technology of oxide particles and nanoparticles, which is applied in the field of antibacterial materials, can solve the problems that it cannot be used as an antibacterial agent, it is difficult to achieve antibacterial effect, and the antibacterial effect is poor.

Active Publication Date: 2021-08-24
XIANGTAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above patents disclose methods for the preparation of single-component metal oxides or chalcogenides. These monodisperse single-component chalcogenide particles and dispersions cannot be used as antibacterial agents, or even if used as antibacterial agents, Its antibacterial effect is relatively poor, and it is usually difficult to achieve more than 90% antibacterial effect required by antibacterial products

Method used

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  • Preparation method of metal oxide doped nanoparticle, dispersoid or powder for resisting bacteria and preventing mildew
  • Preparation method of metal oxide doped nanoparticle, dispersoid or powder for resisting bacteria and preventing mildew
  • Preparation method of metal oxide doped nanoparticle, dispersoid or powder for resisting bacteria and preventing mildew

Examples

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Effect test

Embodiment 1～4

[0066] Examples 1-4: Copper-doped nano-zinc oxide particles, dispersions, and powder preparation examples

Embodiment 1

[0068] Take an appropriate amount of copper chloride ethanol solution and add it to the zinc chloride solution, so that the ratio of the amount of copper chloride to zinc chloride is 1:19. The mixed solution is the doped metal oxide precursor solution, and the sodium hydroxide solution is used as the precipitant solution. The microchannel tubular device described in the publication specification of the international patent application PCT / CN2010 / 071651 and the common four-neck round bottom flask with mechanical stirring together constitute a strong mixing zone. The precipitant solution that will contain the precipitant solution that the precursor solution that contains zinc chloride and cupric chloride solution (both total concentration is 0.15mol / L) and concentration about 0.3mol / L sodium hydroxide solution is passed through rapidly such as figure 2 The A and B inlets of the microchannel tubular device, the precursor solution and the precipitant solution are quickly and stro...

Embodiment 2～4

[0070] Doped zinc oxide particles and dispersions were prepared using the method and steps described in Example 1. The difference is that in Example 2, an aqueous solution of zinc nitrate was used to replace the aqueous solution of zinc chloride; in Example 3, an aqueous solution of zinc acetate was used to replace the aqueous solution of zinc chloride; in Example 4, an aqueous solution of zinc sulfate was used to replace the aqueous solution of zinc chloride. Compared with the copper-doped zinc oxide nanoparticles and dispersions prepared in Examples 2 to 4 and Example 1, except that the particle size and morphology of the finally prepared copper-doped zinc oxide nanoparticles are slightly different, other The detection and characterization results are similar.

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Abstract

The invention discloses a metal oxide doped nanoparticle, dispersoid or powder for resisting bacteria and preventing mildew and a preparation method thereof The metal oxide doped nanoparticle, dispersoid or powder for resisting bacteria and preventing mildew is prepared by the following preparation method: 1) providing a metal oxide-doped precursor solution and a precipitant solution; 2) reacting the doped metal oxide precursor solution and the precipitant solution in a high-shear strong mixing state to obtain doped metal oxide particles; (3) carrying out post-treatment and dispersion on the doped metal oxide particles to form a dispersion or drying to obtain powder; in the doped metal oxide, the main phase metal is a transition metal element, and the doped element is one or more than two of a main group element or a subgroup element. The obtained doped metal compound particles are effective components of an inorganic antibacterial agent, and are good in antibacterial effect and mildew-proof effect.

Description

technical field [0001] The invention belongs to the technical field of antibacterial materials, and in particular relates to a doped metal oxide nanoparticle, dispersion or powder used for antibacterial and mildew prevention and a preparation method thereof. Background technique [0002] Microorganisms such as harmful bacteria, fungi and viruses in nature are the main reasons for human beings to suffer from infection and induce diseases. Smallpox and influenza have been rampant in history, as well as mad cow disease, SARS, and bird flu in recent years, especially the outbreak of the new crown virus in 2020, which has caused panic around the world and seriously threatened human health. In this situation, how to effectively inhibit the growth and reproduction of harmful bacteria and viruses, or completely kill harmful bacteria and viruses, has attracted more and more attention from the world. [0003] The history of human use of antibacterial materials can be traced back to a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/20A01N59/16A01N25/12A01N25/04A01P1/00A01P3/00C08K3/22C08K3/08C09D5/14
CPCA01N59/20A01N59/16A01N25/12A01N25/04C08K3/22C08K3/08C09D5/14C08K2003/085C08K2003/2296C08K2003/2248C08K2003/2213C08K2003/2237C08K2003/2241Y02A50/30
Inventor 沈志刚张浩邓佳星杨程徐文宏
Owner XIANGTAN UNIV
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