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Deposition of TiO2/SiO2 Nanocomposite on Cotton Textile by Sol- Gel Method

Raziyan, Mana | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 45169 (56)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Ghorbani, Mohammad
  7. Abstract:
  8. The synthesis and usage of nanoscaled TiO2 accompanied by the photocatalytic activity were experimented through a systematic research. The synthesis was based on the sol-gel method at low temperatures and atmospheric pressure. In recent years, many endeavors have been made so as to enhance the efficiency of TiO2 photocatalytic activity. The studies show that the inclusion of SiO2 into the TiO2 can give rise to the photocatalytic activity relevant to the derived composite Nanoparticles with regard to the pure TiO2. In this study, the production of TiO2-SiO2 Nanocomposite layers was proceeded via the sol method and the effect of SiO2 increasing and its amount in the primary solution on the crystalline structure, morphology, photocatalysis, and self-cleaning attributes of TiO2 thin layers was surveyed. In order to attain this aim, the Dynamic Light Scattering (DLS), X-Ray Diffraction Spectroscopy (XRD), Field Emission Scanning Electron Microscopy (FESEM), Atomic Force Microscopy (AFM), and UV Spectroscopy have been used. It was observed that increasing 15% SiO2 to TiO2 coating would help the increasing of surface quality through decreasing the size of TiO2-Sio2 crystalline particles. The highest photocatalytic activity and the self-cleaning properties were attributed to the model including 15% molar SiO2 which was heated at 100 temperature. The excess of 15% molar of SiO2 leads to the decrease in self-cleaning
  9. Keywords:
  10. Nanocomposite ; Photocatalyst ; Sol-Gel Method ; Self-Cleaning ; Titanium Dioxide/Silicate Dioxide

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