新型Ti/SnO2-Sb/SnO2-SbZrCe电极制备及响应曲面法优化电催化降解废水工艺研究
朱连燕 , 周幸福
现代化工 ›› 2026, Vol. 46 ›› Issue (10) : 103 -108.
新型Ti/SnO2-Sb/SnO2-SbZrCe电极制备及响应曲面法优化电催化降解废水工艺研究
Preparation of a novel Ti/SnO2-Sb/SnO2-SbZrCe electrode and optimization of electrocatalytic degradation process by response surface methodology
利用平面喷涂方式制备Ti/SnO2-Sb/SnO2-SbZrCe电极,均匀的前驱体溶液层厚使得电极的表面质量优于通过浸渍制备的电极。制备的电极表面呈现颗粒凸起“小岛”分布的状态,掺杂的Ce元素形成的Ce3+/Ce4+穿梭电子对有利于电极表面的电催化氧化反应,从而大幅度提高性能。当Zr∶Ce比例为10∶3时,Ti/SnO2-Sb/SnO2-SbZrCe电极降解50 mg/L甲基橙废水的能量消耗为0.143 kWh/g,小于其他比例锆铈电极的能量消耗。采用基于中心复合设计的响应面分析法(RSM)优化模拟电催化降解过程,结果表明,电流密度与电解质浓度对降解效果影响比较显著,搅拌速度对降解效果影响很小。
The Ti/SnO2-Sb/SnO2-SbZrCe electrode was prepared by the planar spraying method.The uniform precursor solution layer thickness ensured that the surface quality of the electrode was superior to that of the electrode prepared by impregnation.The surface of the prepared electrode presented a state of particle protrusions “islands”,and the Ce3+/Ce4+ shuttle electron pairs formed by the doped Ce element were beneficial to the electrocatalytic oxidation reaction on the electrode surface,thereby significantly improving the performance.When the Zr∶Ce ratio was 10∶3,the energy consumption for the degradation of 50 mg/L methyl orange wastewater by the Ti/SnO2-Sb/SnO2-SbZrCe electrode was 0.143 kWh/g,which was less than the energy consumption of other zirconium-cerium electrode ratios.Response surface methodology (RSM) based on a central composite design was employed to optimize the simulation of the electrocatalytic degradation process.The results showed that the current density and electrolyte concentration had a significant effect on the degradation efficiency,while the stirring speed had a very limited effect.
印染废水 / Ti/SnO2-Sb/SnO2-SbZrCe / 电催化 / 响应曲面优化
dyeing wastewater / Ti/SnO2-Sb/SnO2-SbZrCe / electrocatalysis / response surface optimization
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