Development of an Air-Purification Unit Using a Photocatalysis-Plasma Hybrid Reactor

The novel photocatalysis-plasma hybrid air-purification unit using a titanium-mesh sheet modified with TiO2 (TMiP(TM)) and a surface discharge-induced plasma (SPCP) was investigated. The SPCP unit generates air-plasma on wide area of its surface and TMiP sheet was successfully irradiated by air-plasma without any destruction. Significant decomposition of the ammonia gas has been achieved by the photocatalysis-plasma hybrid reactor. In the present experimental condition, the SPCP unit without TMiP and UV-lamp with TMiP was not effective on the decomposition of the ammonia gas. Therefore, synergistic effects of catalytic activation and plasma excitation on the hybrid reactor with large surface area is useful for significant oxidative decomposition of gaseous pollutants.