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The PbO2 coatings were electrodeposited on titanium sheet from aqueous solution containing lead nitrate and imidazolium based ionic liquids (ILs) additive. Effects of molecular structure of ILs on electro-catalytic activities of resulting PbO2 electrodes were investigated. Electrochemical treatment of simulated wastewater containing phenol was carried out to investigate the electro-catalytic activities of the PbO2 electrodes modified by ILs. High performance liquid chromatography (HPLC) was employed to determine the amount of hydroxyl radicals (·OH) generated on the electrodes by using salicylic acid (SA) as a probe. The electrochemical properties of the samples were investigated by polarization curves tests. The surface structure and wetting ability of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and contact angle test respectively. The results showed that the electro-catalytic activities of PbO2 electrodes modified by [Emim]BF4 were significantly higher than that of PbO2 electrodes modified by [Emim]Br or [Emim]PF6. With BF4 −

Influence of Molecular Structure of Imidazolium Based Ionic Liquids on the Electrochemical Oxidation Performances of Resulting PbO2 Deposits