Enhanced photocatalytic activity of TiO2 films by modification with polyethylene glycol

Álvaro A. Ramírez-Santos, Próspero Acevedo-Peña, Elcy M. Córdoba

Producción científica: Contribución a una revistaArtículo en revista científica indexadarevisión exhaustiva

22 Citas (Scopus)

Resumen

Titanium dioxide porous thin films on the Anatase phase were deposited onto glass slides by the sol-gel method assisted with polyethylene glycol (PEG). The dip-coated films were characterized using scanning electron microscopy (SEM), thermogravimetric analysis (TGA and DTG), UV-visible spectroscopy and X-ray diffraction (XRD). The photocatalytic activity of the films was determined by means of methyl-orange oxidation tests. The resultant PEG-modified films were crack-free and developed a porous structure after calcination at 500 °C. Photo-oxidation tests showed the dependency of catalytic activity of the films on the number of layers (thickness) and porosity, i.e. of the interfacial area.

Idioma originalInglés
Páginas (desde-hasta)1931-1935
Número de páginas5
PublicaciónQuimica Nova
Volumen35
N.º10
DOI
EstadoPublicada - 2012
Publicado de forma externa

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