4 major effects of photocatalyst
1. Self-cleaning
Photocatalyst breaks down oil which attaches dirt. The dirt is detached by the superhydrophilic effect, and washed away by rain. By repeating this, an object applied with photocatalyst coating is cleaned by itself.
[For exterior walls of buildings, signboards, street lamps, and boutique windows, etc.]
2. Air purification
Nitrogen oxide (NOx) and sulfur oxide (SOx), which are contained in the automobile exhausts, are harmful to human health.
NOx and SOx can be broken down and removed by applying photocatalyst coating.
Applying photocatalyst coating to exterior walls of residences will bring about the same effects with three ginkgo trees for air purification.
3. Prevent sick building syndromes
Volatile organic compounds (VOC) may cause dizziness, a throat sore nasal inflammation, vomit, and dermatitis in a new or remodeled house. Photocatalysis breaks down and removes VOC.
[ Examples of applications and results ]
| Before application | After application | |
| Principal's office | 0.27ppm | 0.01ppm |
|---|---|---|
| Classroom | 3.00ppm | 0.05ppm |
| Library | 0.50ppm | 0.07ppm |
| Teachers' office | 0.10ppm | 0.01ppm |
| Multipurpose hall | 0.18ppm | 0.07ppm |
| Computer room | 0.18ppm | 0.04ppm |
| Music room | 0.11ppm | 0.03ppm |
| Before application | After application | |
| Dining hall | 0.10ppm | 0.01ppm |
|---|---|---|
| Office room | 0.12ppm | 0.01ppm |
| Guest room | 0.09ppm | 0.01ppm |
| Computer room | 0.08ppm | 0.01ppm |
| Japanese room | 0.18ppm | 0.01ppm |
| Dormitory room 2nd floor | 0.18ppm | 0.01ppm |
| Dormitory room 3rd floor | 0.11ppm | 0.01ppm |
4. Antimicrobial effect and mold prevention
[for bathrooms, toilets room, kitchens, restaurants, hospitals, etc. ]
Effects of photocatalyst
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It keeps exterior walls clean. [Examples]
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For the health of children and older adults It breaks up viruses, bacteria and molds. [Examples]
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To get rid of VOC and odor in a room It breaks up the odor of pet animals and cigarettes, or toilets. [Examples]
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