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Title page for etd-0809104-185308


URN etd-0809104-185308 Statistics This thesis had been viewed 2270 times. Download 12 times.
Author Kuo-Sen Hunag
Author's Email Address g9103016@ms2.ttu.edu.tw
Department Chemical Engineering
Year 2003 Semester 2
Degree Master Type of Document Master's Thesis
Language English Page Count 100
Title DECOMPOSITION OF DYE BY TITANIUM DIOXIDE THIN FILMS PREPARED BY SOL-GEL METHOD
Keyword
  • titanium dioxide
  • sol-gel method
  • photocatalyst
  • dye
  • degradation
  • degradation
  • dye
  • photocatalyst
  • sol-gel method
  • titanium dioxide
  • Abstract Textile industry, one of the major industries in Taiwan, exhausts a lot of water and generates a lot of wastewater with high colors, high suspended solids, and dissolved organics. In order to meet the increasingly stringent environmental regulations, many technologies are used to remove the toxic non-biodegradable organic matters from the wastewaters. The photocatalytic process using TiO2 semiconductor particles under UV light illumination has been shown to be potentially advantageous and applicable in the treatment of wastewater pollutants. In this study, the TiO2 thin films coated on the glass bottles used as photocatalytic reactors to decompose dye in aqueous solutions were prepared by the sol-gel method, followed by coating, drying, and calcination. The experimental design methodology was adopted to screen the most important factors and to search for the optimal preparation conditions. According to the Plackett-Burman design, alcohol to titanium ratio, acid to titanium ratio, and sol-gel reaction time were found to be the most important variables that might affect the final TiO2 film performance of the dye decomposition conversion. The maximal dye decomposition efficiency was found, by the simplex method, to be 49.2% under 4-W UV illumination for 6 hours.
    Advisor Committee
  • Jia-Ming Chern - advisor
  • Shi-Cherm Yen - co-chair
  • T-S Chern - co-chair
  • Files indicate in-campus access only
    Date of Defense 2004-07-28 Date of Submission 2004-08-09


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