There are various products in the market claiming that they can improve indoor air quality (IAQ). The following table compared 4 products which are able to decompose VOCs:
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CT Catalyst
Photo-catalyst
Ozone Anti-odor machine
Binchotan
Channel Required
Air
UV light and air moisture
Vapor in air
Air
Common Point
Able to decompose organic compounds and some inorganic
compounds which are harmful to human and the surrounding environment
Advantages
- Effective
- Japan brand with patent which shows quality assurance
- Nano-material, can be evenly distributed in the furniture, which can continuously reduce VOC emissions. The effect will not be damaged under normal cleaning
- No secondary pollution
- Effective
- Effective
- No secondary pollution under suitable concentration of O3
- Low cost
- Reusable under regular
cleaning
- No secondary pollution
Disadvantages
- Relatively high cost
- Not suitable for low VOCs emission materials such as tiles, glass and metal
- Relatively high cost
- Not functional in dry or UV light insufficient area (e.g. cabinets and bed bases)
- Major ingredient (TiO2) will generate residual O3
- Market oversells, but of varied quality
- Non-sustainable
- When the O3 concentration is high, there will be a pungent odor, which can easily cause eye discomfort, cough; severe cases will cause nose/throat inflammation, and vomiting. - Non-sustainable
- Less efficient
- Limited by space, the effective range is about 20-60 sq.ft.