Abstract
S-doped titanium dioxide thin films were found to undergo hydrophilic conversion under visible light irradiation. The water contact angle for the S-doped TiO2 thin film reached to 15° under visible light irradiation. The photocatalyzed decomposition of acetaldehyde (ALD) in gas phase on TiO2 thin films was investigated in a batch-type photocatalytic reactor. The photocatalytic activities of TiO2 thin films for decomposition of ALD were investigated by analyzing amount of ALD consumed and CO2 generated under visible light irradiation at wavelengths longer than 420 nm.
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