- Research and Development
- 2020.09.27
Anti-viral technology using visible light responsive photocatalyst
We have applied photocatalyst functionality to suppress the virus activity to paints. The use of such paints for architectural interiors achieves a safe and reliable living environment.
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What is anti-viral technology using visible light responsive photocatalyst?
We have applied virus activity suppression technology, which harnesses photocatalyst functionality that responds even in the visible light region, to paints. We have developed a technology to design paints that maintain superb anti-viral performance even after the coating films are formed. “PROTECTON Interior Wall VK-500” is a product that was developed by applying this technology. For viruses adhering to the surface of a coating film, the virus infectivity titer decreases by 99.9% or more in 4 hours compared to conventional emulsion paints. (verified by using Bacteriophage Qβ)
What are the key features of this technology?
When titanium oxide (visible light responsive photocatalyst) on the surface of the coating film is irradiated with visible light, photoexcitation occurs to generate hydroxyl radicals, etc. These hydroxyl radicals, etc. affect the envelope of viruses adhering to the surface of the coating film, causing oxidative decomposition. Oxidative decomposition of the virus envelope suppresses the virus activity.
Contribution to solving social issues
As social life changes, anti-viral measures are needed in various situations of our daily lives. The paints derived from this technology are used for coating on interior walls, which account for the largest area in the indoor space for daily lives. We aim to contribute to society by imparting anti-viral functionality to interior walls and offering a reliable and safe living environment.
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