Abstract
The photoelectrochemical degradation of structurally similar α,β-unsaturated ketones such as 4-phenyl-3-buten-2-one (benzylideneacetone), 1-(p-totyl)-1-penten-3-one, 4-(p-totyl)-3-buten-2-one, and 4-mesityl-3-buten-2-one has been investigated. Their susceptibility to oxidation and reduction was determined on the basis of voltammetric measurements. It was found that the more methyl groups are attached to the aromatic ring, the oxidation and reduction occurs easier. Among electrodes with different molar ratio of TiO2 and RuO2 (also modified with transition metals oxides: Nb2O5, ZrO2, and Y2O3), TiO2 (70 %)-RuO2 (30 %)/Ti electrode was selected for photoelectrochemical reaction as the optimum one. The photocatalytic activity of the analyzed materials has been determined on the basis of the photocurrent generated in KCl and NaClO4 solutions. The highest mineralization was achieved for benzylideneacetone while the lowest was for 4-mesityl-3-buten-2-one using current intensity of 0.3 A and UV radiation with the wavelength of 254 nm during 120 min.
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Perek-Dlugosz, A., Socha, A., Socha, M. et al. Photoelectrochemical Treatment of α,β-Unsaturated Ketones on TiO2-RuO2/Ti Electrode. Electrocatalysis 6, 563–570 (2015). https://doi.org/10.1007/s12678-015-0278-6
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DOI: https://doi.org/10.1007/s12678-015-0278-6