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Producing photoactive, transparent and hydrophobic SiO2-crystalline TiO2 nanocomposites at ambient conditions with application as self-cleaning coatings

Kapridaki, Chrysi ; Pinho, Luís ; Mosquera, Maria J ; Maravelaki-Kalaitzaki, Pagona

Applied Catalysis B: Environmental, September 2014, Vol.156-157, pp.416-427 [Periódico revisado por pares]

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  • Título:
    Producing photoactive, transparent and hydrophobic SiO2-crystalline TiO2 nanocomposites at ambient conditions with application as self-cleaning coatings
  • Autor: Kapridaki, Chrysi ; Pinho, Luís ; Mosquera, Maria J ; Maravelaki-Kalaitzaki, Pagona
  • Assuntos: Sio2-Crystalline Tio2 Nanocomposites ; Self-Cleaning Products ; Photoactive ; Transparent and Hydrophobic Coatings ; Oxalic Acid ; Engineering ; Environmental Sciences ; Chemistry
  • É parte de: Applied Catalysis B: Environmental, September 2014, Vol.156-157, pp.416-427
  • Descrição: Nowadays, the enhancement of atmospheric pollution is dramatically increasing the presence of soiling on buildings in every city of the world. Thus, the development of photocatalysts as self-cleaning coatings is a promising challenge. The first object of this work was to develop a simple synthesis route for obtaining SiO -crystalline TiO nanocomposites at ambient temperature. Thus, it meets the requirements to produce photoactive coatings on buildings and, additionally, it can be used in other applications requiring low temperature. The second objective was to gain insights into the structure of these materials and to establish the relationship between their structure and their performance as photocatalysts. The synthesis process involves mixing titanium and silicon alkoxides in the presence of oxalic acid. An organic silica oligomer is also added to reduce surface energy and consequently, to give hydrophobic properties...
  • Idioma: Inglês

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