Fabrication of photocatalytic multi layer membrane using porous TiO2 film by aerosol deposition

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  • CHOI Byung-Kyu
    Dept. of Metal and Materials Engineering, Kangnung National University
  • MUN Kyu-Shik
    Dept. of Metal and Materials Engineering, Kangnung National University
  • CHO Churl-Hee
    Membrane Materials Research Group, Reaction and Separation Materials Research Center, Korea Institute of Energy Research
  • KIM Jong-Oh
    Dept. of Civil Engineering, Kangnung National University
  • PARK Hun
    Dept. of Materials Science and Engineering, Korea Advanced Institute of Science and Technology
  • CHOI Won-Youl
    Dept. of Metal and Materials Engineering, Kangnung National University

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Titanium dioxide (TiO2) has been one of the most attractive materials in the experimental investigation during the last decades due to its scientific and technological importance. The electrochemical photolysis of water with TiO2 was intensively studied as a candidate for a new energy source. Sterilization and sewage disposal using TiO2 as an electrochemical catalyst were also investigated. We fabricate the photocatalytic multi layer membrane with TiO2 thin film by aerosol deposition method at room temperature. To fabricate the TiO2 thin film, the aerosol bath pressure and chamber pressure were 500 torr and 0.4 torr, respectively. The difference of aerosol bath pressure and chamber pressure accelerated the TiO2 nano powder to ultrasonic velocity through the nozzle of 0.4 mm × 10 mm. Multi layer SUS membrane with diameter of 50 mm was used as a substrate to apply the TiO2 thin film to water quality purification. The anatase phase of TiO2 thin film was observed by X-ray diffraction. The multi layer membrane with TiO2 thin film had the good photocatalytic activity for organics removal.

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