Formaldehyde Degradation by Photocatalytic Ag-Doped TiO2 Film of Glass Fiber Roving
The photocatalytic Ag doped TiO2 porous films were prepared by sol–gel method and dip coated on glass fiber roving. The sol composed of titanium (IV) isopropoxide, triethanolamine, ethanol and nitric acid followed by calcination of the film at 500 °C for 1 hour with a heating rate of 3 °C/min. The surface morphology and properties of synthesized TiO2 films were characterized by X-ray diffraction, atomic forced microscope and scanning electron microscope. A laboratory photocatalytic reactor was set up to carry out photoactivity of the prepared catalysts. The results show that TiO2–Ag and TiO2–Ag–TEA porous films give highest rate of formaldehyde gas degradation. It can be noted that triethanolamine exhibits two effects on TiO2 composite films; one is its effect on porous film structure and second is a reverse effect of hindrance of anatase growth.
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Document Type: Research Article
Publication date: 2010-11-01
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