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Title page for etd-0625104-152027


URN etd-0625104-152027 Statistics This thesis had been viewed 1721 times. Download 17 times.
Author Ya-Nan Lin
Author's Email Address mei050778@yahoo.com.tw
Department Materials Engineering
Year 2003 Semester 2
Degree Master Type of Document Master's Thesis
Language zh-TW.Big5 Chinese Page Count 138
Title The Effects of Processing Parameters on TiO2-SiO2 Thin Films and Powders
Keyword
  • titania (TiO2)
  • photocatalyst
  • plasma
  • silica (SiO2)
  • sol-gel method
  • sol-gel method
  • silica (SiO2)
  • plasma
  • photocatalyst
  • titania (TiO2)
  • Abstract Titania thin films and powders with various amounts of silica addition were prepared by using sol-gel technique. Titania powders were obtained by direct heat-treating the prepared gel. However, various titania thin films were obtained by spin-coating the prepared gel on 304 stainless steel substrates and the subsequent designated heat treatments. The structure and properties of various TiO2 thin films and powders were conducted by applying X-Ray Diffractometry (XRD), Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectrometry (FTIR), Ultraviolet-Visible Spectrometry (UV-Vis) and X-Ray Photoelectron Spectrometry (XPS), respectively. The presence of silica in TiO2 thin films: (1) suppressed the formation of rutile phase and grain growth; (2) increased the UV absorbency, and (3) decreased the contact angle of water. The presence of silica in TiO2 powders: (1) suppressed the formation of rutile phase and grain growth; (2) increased both the energy gap and UV absorbency of TiO2 powders.
    Advisor Committee
  • Tair-I Wu - advisor
  • Chien-Lung Huang - co-chair
  • Yi Hu - co-chair
  • Files indicate in-campus access only
    Date of Defense 2004-06-11 Date of Submission 2004-06-25


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