Developing nano-photocatalysts for an integrated air purification system
III-6: Developing nano-photocatalysts for an integrated air purification system |
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Wang Kean, Division of Chemical & Biomolecular Engineering, |
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Abstract |
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Indoor air may pose more health hazards than outdoor air. Two major classes of contaminants are volatile organic chemicals (VOCs) and bioaerosols (BAs). Traditional filters may become a home/breeding pool for BAs and ineffective for VOCs. Photocatalysis (e.g., TiO2) offers promising solution for destructing VOCs but may not function well at the low concentrations. So far there is no better solution addressing both VOCs and BAs simultaneously.
This project will develop an integrated cleaning system for aircon systems which uses a supported nanophotocatalysts, - TiO2 nano-particles supported on nanoporous substrates. It destructs VOCs at very low concentration via the “adsorption and destruction” mechanism and is capable of inactivating the BAs. The overall design is based on the granted international patent of Dr. Lai. |
