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Preparation method for metallic element doped nano-zinc oxide and graphene oxide composite anti-bacterial powder

A composite technology of nano-zinc oxide and graphene, which is applied in the direction of metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, botany equipment and methods, etc. Uneven dispersion and other problems, to achieve the effect of inhibiting recombination, high electron mobility, and solving agglomeration

Inactive Publication Date: 2018-12-21
沈海红
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, based on the shortcomings of nano-zinc oxide nanoparticles such as uneven dispersion and difficulty in fixing, and photogenerated electrons and hole pairs are easy to recombine, the photon quantum yield is less than 10%, and the photocatalytic efficiency is extremely low. At the same time, ultraviolet light must be used as the excitation light source. thereby greatly limiting its use
[0003] In recent years, with the development of doping technology in inorganic nanomaterials, doping with metal elements can improve the antibacterial properties of nano-zinc oxide in the visible light range, but the antibacterial properties of nano-zinc oxide materials in the visible light range still need to be further improved, so It is imminent to develop metal element-doped nano-zinc oxide materials that are simple and efficient, easy to industrialize, have good dispersion, low energy consumption, and high photocatalytic activity

Method used

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  • Preparation method for metallic element doped nano-zinc oxide and graphene oxide composite anti-bacterial powder
  • Preparation method for metallic element doped nano-zinc oxide and graphene oxide composite anti-bacterial powder
  • Preparation method for metallic element doped nano-zinc oxide and graphene oxide composite anti-bacterial powder

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Embodiment 1-30

[0036] Embodiment 1-30 provides a kind of preparation method of metal element-doped nano-zinc oxide and graphene oxide composite antibacterial powder respectively, in each embodiment, PAAS, salt containing the first metal (yttrium nitrate hexahydrate or cobalt nitrate hexahydrate ), salt containing the second metal (aluminum nitrate nonahydrate or cerium nitrate hexahydrate), silane coupling agent γ-(methacryloyloxy)propyltrimethoxysilane (KH-570), sodium nitrate, concentrated sulfuric acid , potassium permanganate, and graphene oxide are shown in Table 1 and Table 2 below.

[0037] The concrete steps of each embodiment are as follows:

[0038] 1. Metal element doped nano zinc oxide

[0039] Add sodium polyacrylate (PAAS) with a molecular weight of 30000-50000 into 250g of deionized water, stir evenly to dissolve it in the water, then transfer the sodium polyacrylate solution into a 1L stainless steel ball mill tank, and add 48g (0.6mol) nano-zinc oxide (provided by Zhaoqing...

Embodiment 31

[0054] This example provides a method for preparing metal element-doped nano-zinc oxide and graphene oxide composite antibacterial powder. In this implementation, except for the difference between the doped metal component and Example 3, the other groups and dosages are the same as those in Example 3. The same as in Example 3, the specific preparation method is also the same as in Example 3. The doping metal component of this embodiment consists of 30 mmol of cobalt nitrate hexahydrate and 18 mmol of aluminum nitrate nonahydrate.

Embodiment 32

[0056] This example provides a method for preparing metal element-doped nano-zinc oxide and graphene oxide composite antibacterial powder. In this implementation, except for the difference between the doped metal component and Example 3, the other groups and dosages are the same as those in Example 3. The same as in Example 3, the specific preparation method is also the same as in Example 3. The doping metal component of this embodiment consists of 30 mmol of yttrium nitrate hexahydrate and 18 mmol of cerium nitrate hexahydrate.

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Abstract

The invention relates to the technical field of nano-zinc oxide materials and in particular to a preparation method for metallic element doped nano-zinc oxide and graphene oxide composite anti-bacterial powder. The preparation method comprises the following steps: firstly doping a metallic element in nano-zinc oxide, performing surface modification treatment on the metallic element doped nano-zincoxide, and enabling the metallic element doped nano-zinc oxide to react with graphene oxide, to obtain the metallic element doped nano-zinc oxide and graphene oxide composite anti-bacterial powder. The prepared composite anti-bacterial powder has the better photocatalysis effect and anti-bacterial effect, a response wave band of photocatalytic activity is increased to a visible region, and a sunlight spectral response range is extended, so the composite anti-bacterial powder also has the photocatalysis effect in a visible spectral region, and has the more extensive application in aspects of anti-bacterial anti-ultraviolet products. The method is simple and efficient, and easy to industrial production. The prepared composite anti-bacterial powder is good in dispersity, low in energy consumption, and good in anti-bacterial sterilizing effect.

Description

technical field [0001] The invention relates to the technical field of nano-zinc oxide materials, in particular to a preparation method of metal element-doped nano-zinc oxide and graphene oxide composite antibacterial powder. Background technique [0002] Nano-zinc oxide activates its photocatalytic properties under ultraviolet light irradiation, can decompose organic substances, play the role of antibacterial and deodorizing, and because it has the characteristics of photoelectric effect of semiconductor photocatalyst and small size effect of nanomaterials, it has relatively Strong antibacterial ability, can be widely used in coatings, plastics, fibers, cosmetics, ceramics, environmental engineering, glass and building materials and other fields. However, based on the shortcomings of nano-zinc oxide nanoparticles such as uneven dispersion and difficulty in fixing, and photogenerated electrons and hole pairs are easy to recombine, the photon quantum yield is less than 10%, a...

Claims

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Application Information

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IPC IPC(8): B01J23/34B01J23/889B01J35/00A01N59/16A01P3/00A01P1/00
CPCA01N59/16B01J23/002B01J23/34B01J23/8892B01J2523/00B01J35/39B01J2523/31B01J2523/36B01J2523/72B01J2523/3712B01J2523/845
Inventor 沈海红
Owner 沈海红
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