The Influence of Light Irradiation on the Photocatalytic Degradation of Organic Pollutants.
作者： Alexandru Enesca , Luminita Isac
DOI: 10.3390/MA13112494
关键词:
摘要: The design of a photocatalytic process must consider intrinsic and extrinsic parameters affecting its overall efficiency. This study aims to outline the importance balancing several factors, such as radiation source, total irradiance, photon flux, catalyst substrate, pollutant type in order optimize Titanium oxide was deposed by doctor blade technique on three substrates (microscopic glass (G), flour-doped tin (FTO), aluminum (Al)), properties samples were tested two pollutants (tartrazine (Tr) acetamiprid (Apd)). Seven irradiation scenarios using different ratios UV-A, UV-B + C, Vis radiations. results indicated that presence conductive substrate suitable ratio UV-A radiations could increase efficiency samples. Higher efficiencies obtained for sample Ti_FTO (58.3% Tr 70.8% Apd) Ti_Al (63.8% 82.3% mixture one sources (13.5 W/m2 41.85 μmol/(m2·s)). A kinetic evaluation revealed mechanisms reaction: (a) one-interval mechanism related Apd removal Ti_FTO, (scenarios 1, 4, 5, 7), Ti_G (scenario 7) (b) two-interval all other cases.
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