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Electrode material and its preparation method is the influence of the surface structure of the electrode coating , thus affecting the electrode electro-catalytic oxidation is a major factor in the performance , this paper Ce , Y , La , Nd , rare earth elements and Mn Doping Ti / SnO 2 -Sb modified electrode preparation and performance evaluation of the main research content to the target for the electrochemical oxidation degradation chlorophenol (4-CP) , explore the electrochemical oxidation degradation of 4-CP transformation mechanism , as well as the relationship between the electrode structure and electro-catalytic oxidation activity . Were prepared by the sol-gel method , Ti / SnO 2 - Sb coated electrodes , rare earth doped Ti / SnO 2 - Sb coated electrodes and Mn -doped Ti / SnO 2 -Sb coated electrodes . SEM, EDX, XRD, XPS and other modern analytical tools to characterize the morphology , structure of the electrode using electrochemical workstation , UV-visible spectrometry (UV-vis) and high performance liquid chromatography (HPLC) of electrode degradation of 4-CP the process of the mechanism are discussed , and to determine the conditions of the heat treatment temperature , Sb , Mn and rare earth doping ratio . Experimental studies have shown that the heat treatment temperature of 500 ℃ Ti / SnO 2 - Sb electrode preparation temperature ; Sb , rare earth elements and Mn doping on SnO 2 coated the electrocatalytic activity of the layer electrode has a certain improvement , wherein the rare earth elements of Ce , and Y , La , Nd, La element doped performance degradation of 4-CP advantages most evident ; Sb doping amount is determined by experiments in 6% La doping amount of 1.5 % Mn doping amount of 6% , the electrode catalytic activity effect relative best ; electrode degradation of 4-CP by high-performance liquid chromatography of the mechanism of the process is analyzed as follows : Ti / SnO 2 - SB electrodes and the rare-earth doped Ti / SnO 2 -Sb electrode electrochemical oxidation degradation reaction of the 4-CP generates intermediate product of p-benzoquinone as the main body , and ultimately of benzoquinone is further open ring degradation of butenedioic other substances, butenedioic further oxidative degradation , and ultimately carbon dioxide and water is generated ; the Mn doped Ti / SnO 2 -Sb electrode is 4-CP degradation reaction of o - benzoquinone as the main intermediate product , the final o-benzoquinone is further degraded to ring opening butenedioic other substances, butenedioic is further oxidative degradation , and ultimately carbon dioxide and water is generated .
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