enhanced photocatalytic activity of tio2 films by modification with polyethylene glycol
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ID: 245971
2012
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Abstract
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.
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ramrez-santos2012qumicaenhanced
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|---|---|
| Authors | ;Álvaro A. Ramírez-Santos;Próspero Acevedo-Peña;Elcy M. Córdoba |
| Journal | greece and rome |
| Year | 2012 |
| DOI |
10.1590/S0100-40422012001000008
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