Antibacterial/antiviral composition, antibacterial/antiviral agent, photocatalyst, and bacteria/virus inactivation method

An antiviral agent and photocatalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, botany equipment and methods, etc., can solve the problem that AgCl particles are difficult to handle, have no photocatalytic function, and cannot be used indoors, etc. problem, to achieve excellent antibacterial and antiviral activity

Inactive Publication Date: 2017-03-01
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these compounds have the following problems: they cannot be used indoors because they do not have a photocatalyst function exhibited under irradiation with visible light, and the remains of bacteria and viruses that have been inactivated in the dark remain in these compounds, so long-term development cannot be expected. Maintain antibacterial and antiviral functions
However, AgCl particles themselves do not exhibit antiviral performance, and AgCl particles tend to become coarse particles, and there is a problem that AgCl particles are difficult to handle (for example, non-patent document 2)

Method used

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  • Antibacterial/antiviral composition, antibacterial/antiviral agent, photocatalyst, and bacteria/virus inactivation method
  • Antibacterial/antiviral composition, antibacterial/antiviral agent, photocatalyst, and bacteria/virus inactivation method
  • Antibacterial/antiviral composition, antibacterial/antiviral agent, photocatalyst, and bacteria/virus inactivation method

Examples

Experimental program
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Effect test

Embodiment 1

[0130] 5 g of anatase-type titanium dioxide (manufactured by Showa Denko Ceramics Co., Ltd.) was suspended in 200 mL of distilled water to prepare a suspension, and 50 mL each of AgNO dissolved in 0.296 g was prepared. 3 (manufactured by Kanto Chemical Co., Ltd.) and a solution in which 0.204 g of NaCl (manufactured by Kanto Chemical Co., Ltd.) was dissolved, AgNO 3 The solution and the NaCl solution were successively put into the suspension. Then, it was stirred at room temperature for 10 minutes. The obtained suspension was filtered and dried to obtain AgCl-supported anatase-type titanium dioxide powder (5 parts by mass of AgCl supported per 100 parts by mass of titanium dioxide).

[0131] Suspend 3 g of AgCl / titanium dioxide powder in 200 mL of distilled water to prepare a suspension, and add 0.04 g (0.5 parts by mass as copper to 100 parts by mass of AgCl / rutile-type titanium dioxide powder) of CuCl to the suspension 2 2H 2 O (manufactured by Kanto Chemical Co., Ltd.), ...

Embodiment 2

[0134] A sample of Example 2 was prepared in the same manner as in Example 1 except that the supported amount of AgCl was 1 part by mass relative to 100 parts by mass of titanium dioxide.

Embodiment 3

[0136] A sample of Example 3 was prepared in the same manner as in Example 1, except that the supported amount of AgCl was 0.1 parts by mass relative to 100 parts by mass of titanium dioxide.

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Abstract

The present invention provides: an antibacterial/antiviral composition which has excellent antibacterial/antiviral activity under visible light irradiation; an antibacterial/antiviral agent; a photocatalyst; and a bacteriairus inactivation method. An antibacterial/antiviral composition according to the present invention contains titanium oxide on which both a divalent copper compound and a silver compound are loaded. An antibacterial/antiviral agent according to the present invention and a photocatalyst according to the present invention contain an antibacterial/antiviral composition according to the present invention. A bacteriairus inactivation method according to the present invention inactivates bacteria and a virus with use of an antibacterial/antiviral composition according to the present invention, an antibacterial/antiviral agent according to the present invention or a photocatalyst according to the present invention.

Description

technical field [0001] The invention relates to an antibacterial and antiviral composition, an antibacterial and antiviral agent, a photocatalyst and a method for inactivating bacteria and viruses. More specifically, it relates to an antibacterial and antiviral composition and an antibacterial and antiviral agent that have high photoresponse activity to bacteria and viruses under irradiation with visible light with a wavelength of 400 nm or more, and have an inactivation effect on bacteria and viruses in the dark , photocatalyst and bacterial virus inactivation method. Background technique [0002] From the viewpoint of antibacterial and antiviral, researches on antibacterial metals, organic compounds, natural compounds and photocatalysts are being actively carried out. Among them, photocatalysts have antibacterial and antiviral activities against many bacteria and viruses, and photocatalysts can be regarded as one of the promising materials. [0003] Patent Document 1 des...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01N25/00A01N59/20A01P1/00A01P3/00B01J27/122B01J35/02
CPCA01N25/00A01N59/16A01N59/20B01J27/122B01J35/02A61L2/088A61L2/16
Inventor 细木康弘黑田靖
Owner SHOWA DENKO KK
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