Photocatalyst filter sponge is a specialized porous material infused with photocatalytic substances (typically titanium dioxide, TiO₂) that can degrade organic pollutants, bacteria, and viruses when exposed to light (especially UV light). This technology combines the adsorption properties of a sponge with the oxidative decomposition ability of a photocatalyst.
How Photocatalyst filter Sponge Works:
- Photocatalytic Reaction: When UV or visible light hits the photocatalyst (e.g., TiO₂), it generates reactive oxygen species (ROS) like hydroxyl radicals (•OH) and superoxide ions (O₂⁻).
- Oxidation of Pollutants: These radicals break down organic contaminants (VOCs, odors, bacteria, mold) into harmless CO₂ and H₂O.
- Adsorption & Decomposition: The sponge structure traps particles and microbes, while the photocatalyst continuously decomposes them.
Applications:
- Air Purification
- Removes indoor air pollutants (formaldehyde, benzene, ammonia).
- Used in HVAC systems, air purifiers, and car cabin filters.
- Water Treatment
- Degrades organic pollutants, dyes, and microorganisms in wastewater.
- Applied in aquarium filters, industrial water purification, and portable water cleaners.
- Antibacterial & Antiviral Uses
- Kills bacteria (E. coli, Staphylococcus) and viruses (including some enveloped viruses).
- Used in medical facilities, kitchens, and public spaces.
- Odor Elimination
- Neutralizes bad smells in refrigerators, shoes, pet areas, and garbage bins.
- Self-Cleaning Surfaces
- Integrated into building materials, textiles, and masks to prevent microbial growth.
Advantages:
- Eco-friendly (no harmful byproducts).
- Long-lasting (photocatalyst does not get consumed).
- Energy-efficient (works under sunlight or LED UV light).
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