Articles
  • Antibacterial device using UVA-LED and TiO2 films for air-conditioner evaporat
  • Young-Hwan Leea, Young-Sun Jeona, Tae-Il Choib, Seung Hwangboc and Kyu-Seog Hwangd,*
  • a Dept. of Automobile, Chunnam Techno Univ., 285 Okgwa-ri, Okgwa-Myeon, Gokseong-gun, Jeollanam-do 516-911, Korea b Dept. of Health Admin., Kwangju Women's Univ., 165 Sanjeong-dong, Gwangsan-gu, Gwangju 506-713, Korea c Dept. of Electronic& Photonic Eng., Honam Univ., 59-1 Seobong-dong, Gwangsan-gu, Gwangju 506-714, Korea b Dept. of Biomed. Eng., Nambu Univ, 864-1 Wolgye-dong, Gwangsan-gu, Gwangju 506-824, Korea
Abstract
Recently, photocatalysis with TiO2 was very restricted because of the lack of an appropriate UV source. In this work, in order to increase antibacterial properties of UVA-LED, photoreactive TiO2 film was coated on aluminum substrates by rf-magnetron sputtering. The number of Escherichia coli which remained after irradiation under each time was counted. The photocatalytic TiO2 films on aluminum after irradiation at 365 nm have the comparable antibacterial ability to the uncoated sample irradiated at 280 nm. A sterilization system integrating TiO2 film with UVA-LED has the potential for air purification in automobile and would find wide use in the field of antibacterial.

Keywords: UVA-LED, TiO2 film, Antibacterial ability.

This Article

  • 2013; 14(2): 202-205

    Published on Apr 30, 2013