钛基RuOx-PdO电极电催化氧化降解活性艳红K-2BP研究

本文以自制钛基RuOx-PdO电极为阳极,钛片为阴极,NaCl为电解质,研究了活性艳红K-2BP的电催化氧化降解行为.实验结果表明,在pH值为2.0、NaCl浓度为0.02mol/L、电流密度为0.25mA/cm2和室温条件下,20mg/L活性艳红K-2BP经电催化氧化1h,脱色率可以达到99.6%.在本实验条件下,活性艳红K-2BP的脱色降解主要是电生活性氯的间接氧化和钛基RuOx-PdO 电极直接氧化协同作用的结果.作者用钛基RuOx-PdO 电极降解活性艳红K-2BP,其适用性较强,可在较大的温度范围、较宽的染料浓度时达到较好的脱色效果.表明作者自制钛基RuOx-PdO电极具有良好的电催化氧化性能,在降解活性染料方面,有一定的应用前景.

Study on Electro-catalytic Oxidative Degradation of Reactive Brilliant Red K-2BP on RuOx - PdO/Ti Electrode

RuOx-PdO/Ti electrode was prepared and applied to the electro-catalytic oxidation degra-dation of reactive brilliant red K-2BP using NaCl as supporting electrolyte.The parameters altering the efficiency of electro-catalytic oxidation degradation were also investigated and optimized.It was found that under the optimal reaction conditions(pH value 2,concentration of NaCl 0.02 mol/L and current intensity 0.25mA/cm2),the color removal of 99.6% within 1 hour can be obtained.The main cause of discoloration can be attributed to a synergetic effect between direct oxidation of electrode and indirect oxidation of free chlorine formed during the electrochemical treatment.The electrode performs well over a wide range of temperatures and initial concentrations of dye.This showed the potential application of RuOx-PdO/Ti electrode in the treatment of dye-polluted water.