| Title |
Air Cleaning Unit using Combination of TiO_2 Photocatalyst and Pulsed Discharge Plasma |
| Authors |
홍영기(Hong, Yeong-Gi) ; 신수연(Sin, Su-Yeon) ; 강정훈(Gang, Jeong-Hun) ; 이성화(Lee, Seong-Hwa) ; 조정수(Jo, Jeong-Su) ; 박정후(Park, Jeong-Hu) |
| Keywords |
pulsed discharge ; plasma ; TiO_2 ; photocatalyst ; air cleaning unit |
| Abstract |
The purpose of this work is to develop a high-efficiency air cleaning system for air pollutants such as particulate and gaseous state in indoor environments. In order to enhance a removal efficiency of gaseous state pollutants, we suggested that pulsed discharge plasma be combined with TiO_2 photocatalyst (photocatalytic plasma air cleaning unit). We investigated experimentally the basic characteristics of photocatalytic plasma air cleaning unit and measured air pollutants removal efficiency. The wavelength of light radiated from pulsed discharge plasma under the atmospheric condition was 310~380nm. Its energy is enough to excite the TiO_2 photocatalyst and it makes a photochemical reaction in the surface of TiO_2 photocatalyst. The removal quantity of trimethylamine((CH_3)_3N) was 130mg/m^34 which is twice quantity of pulsed discharge plasma without TiO_2 phtocatalyst unit. From the result of gas analysis using FT-IR, nitric oxide was not detected and trimethylamine was decomposed to H_2O and CO_2. And trimethylamine removal efficiency was 95%. These experimental results indicate that photocatalytic plasma air cleaning unit is a potential method in removing the pollutants. |