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Photocatalyst sterilization disinfectant based on Ag and N co-doped titanium dioxide/silver nitrate as well as preparation method and application of photocatalyst sterilization disinfectant

A technology of titanium dioxide and photocatalyst, which is applied in the field of photocatalyst sterilizing disinfectant and its preparation, can solve the problems of poor sterilizing performance of photocatalyst bactericidal disinfectant, etc., and achieve the effect of improving killing efficiency, reducing compound reaction, and reducing optical bandgap

Inactive Publication Date: 2020-12-29
青岛亿恩方能源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the wide band gap (3.2eV) of intrinsic titanium dioxide, it can only absorb ultraviolet light with a wavelength efficiency of 380nm, but cannot absorb and utilize visible light with a wider spectrum. Difference

Method used

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  • Photocatalyst sterilization disinfectant based on Ag and N co-doped titanium dioxide/silver nitrate as well as preparation method and application of photocatalyst sterilization disinfectant
  • Photocatalyst sterilization disinfectant based on Ag and N co-doped titanium dioxide/silver nitrate as well as preparation method and application of photocatalyst sterilization disinfectant

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Embodiment 1

[0029] The preparation method of the photocatalyst bactericidal disinfectant based on Ag, N co-doped titanium dioxide / silver nitrate of the present invention comprises the following steps:

[0030] 1. Weigh anhydrous silver nitrate and P25 titanium dioxide nanopowder and mix to obtain a mixture, and the mass ratio of silver nitrate in the mixture is 0.5%;

[0031] 2. Grind the mixture for 30 minutes to make it evenly mixed;

[0032] 3. The mixture ground in step 2 was solid-phase sintered at 300° C. for 30 minutes to prepare Ag and N co-doped titanium dioxide nanopowder;

[0033] 4. Dissolve the Ag and N co-doped titanium dioxide nanopowder in step 3 together with silver nitrate, dispersant and plant essential oil in deionized water to make the concentrations respectively 0.05g / L, 1mol / L and 0.2mol / L L, 0.5g / L, obtained photocatalyst bactericidal disinfectant through ultrasonic dispersion for 10 minutes.

[0034] Through the above method, obtained in the standard sunlight (1...

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Abstract

The invention provides a method for sterilizing and disinfecting by using an Ag and N co-doped titanium dioxide / silver nitrate photocatalyst, which comprises the following steps: mixing solid silver nitrate powder with P25 titanium dioxide nano powder, uniformly grinding, and calcining to prepare Ag and N co-doped titanium dioxide; dissolving the co-doped titanium dioxide, silver nitrate, a dispersing agent and plant essential oil in deionized water, and completely performing ultrasonic dispersion to obtain the photocatalyst sterilization disinfectant. The spectral absorption range of titaniumdioxide is widened to a visible light region through Ag and N co-doping, the utilization efficiency of sunlight and the concentration of photon-generated carriers are improved, meanwhile, the preparation method has the advantages of being simple, low in cost, good in sterilization and disinfection effect and the like, and coronapneumonia viruses, influenza viruses, escherichia coli and the like of the human body can be effectively killed.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a photocatalyst sterilizing and disinfecting agent based on Ag and N co-doped titanium dioxide / silver nitrate and its preparation method and application. Background technique [0002] Infectious germs such as coronavirus, influenza virus, Escherichia coli, staphylococcus, etc. can be transmitted rapidly through droplets, breathing, contact and other channels, which has become a major hazard to human health and life safety. Prevention and monitoring of infectious germs And treatment is an important part of ensuring public health security. The main component of the commonly used 84 disinfectant is sodium hypochlorite, which is highly oxidizing and corrosive, and has a pungent smell. Excessive inhalation by the human body will cause dyspnea, coughing, nausea, chest pain, diarrhea, etc., and even death in severe cases; The ethanol volatilized by alcohol disinfectan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01P1/00B01J27/24B01J37/08
CPCA01N59/16B01J27/24B01J37/088B01J35/23B01J35/39
Inventor 潘荣雄唐群委
Owner 青岛亿恩方能源环保科技有限公司
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