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采用Ti/IrO_2-RuO_2涂层电极对2,4,6-三氯苯酚(TCP)溶液进行电化学氧化降解研究。结果表明:TCP降解效率与溶液初始p H、溶液初始浓度、电解时间,外加电压、及溶液中电解质的量相关,在外加电压为7 V、p H=3、Na_2SO_410 g/L的条件下,Ti/IrO_2-RuO_2涂层电极对初始浓度为0.025 g/L的TCP溶液处理150 min后,TCP降解效率达到99%以上。通过探讨TCP在酸性条件和碱性条件下降解的中间产物及降解规律,表明在酸性条件下TCP的降解主要是通过·OH自由基氧化和在阳极表面直接氧化的共同作用实现的,而碱性条件下起主要反应的是·OH自由基的氧化作用。
Electrochemical Oxidation Degradation of 2,4,6-Trichlorophenol (TCP) Solution by Ti / IrO_2-RuO_2 Coating Electrode. The results showed that the degradation efficiency of TCP was related to the initial pH of the solution, the initial concentration of the solution, the electrolysis time, the applied voltage and the amount of electrolyte in the solution. Under the applied voltage of 7 V, p H = 3 and Na_2SO_410 g / L, The TCP degradation efficiency of Ti / IrO_2-RuO_2 coated electrode was more than 99% after treated with TCP solution with the initial concentration of 0.025 g / L for 150 min. The degradation of TCP under acid and alkaline conditions and the degradation of TCP showed that the degradation of TCP was mainly caused by the interaction of · OH radical oxidation and direct oxidation on the anode surface under acidic conditions, Under the conditions of the main reaction is the · OH radical oxidation.