In this study, the Ti/SnO₂–RuO₂ electrodes with different Yb contents were prepared by sol–gel method and thermal decomposition method, and the surface morphology and crystal structure of the electrodes were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM) and X-ray diffraction (XRD), the electrochemical properties of the electrodes were tested by linear sweep voltammetry (LSV) and cyclic voltammetry (CV). The electrochemical oxidation device was constructed with Yb-doped Ti/SnO₂–RuO₂ electrode as the anode and titanium plate as the cathode, and the electrochemical oxidation effect and product changes of the anode on coking wastewater were investigated. The results show that the surface of the electrode is flat with high crystallinity of SnO₂ and RuO₂ crystals at 1.5% Yb doping, and the LSV and CV curves indicate that the Yb doping of 1.5% increases the oxygen precipitation potential and electrocatalytic oxidation activity of the electrode. When the electrode with Yb doping of 1.5% is the anode with current density of 10 mA/cm² electrochemical oxidation time of 30 min, the electrode can remove chemical oxygen demand (COD) up to 85.06%, total organic carbon (TOC) up to 60.59% and UV₂₅₄ from 1.594 to 0.507 for coking wastewater. Gas chromatography (GC–MS), UV–vis and three-dimensional fluorescence results of coking wastewater before and after treatment show that large toxic substances in coking wastewater are degraded to low toxic organic substances, and most soluble organic substances are degraded and transformed. This study provides the possibility of basic research for the engineering practice of electrochemical oxidation for the treatment of coking wastewater.

本研究采用溶胶-凝胶法和热分解法制备了不同Yb含量的Ti/SnO ₂ -RuO ₂电极，并通过扫描电子显微镜（SEM）、原子力显微镜（AFM）和X射线衍射（XRD），通过线性扫描伏安法（LSV）和循环伏安法（CV）测试电极的电化学性能。电化学氧化装置由掺Yb的Ti/SnO ₂ -RuO _2构成以电极为阳极，钛板为阴极，研究了阳极对焦化废水的电化学氧化作用和产物变化。结果表明，1.5% Yb掺杂时，电极表面平整，SnO ₂和RuO ₂晶体结晶度高，LSV和CV曲线表明，1.5%的Yb掺杂提高了析氧电位和电催化氧化活性。的电极。当Yb掺杂量为1.5%的电极为阳极时，电流密度为10 mA/cm ²电化学氧化时间为30 min，该电极可去除化学需氧量（COD）高达85.06%，总有机碳（TOC）高达至 60.59% 和紫外线₂₅₄焦化废水为 1.594 至 0.507。焦化废水处理前后的气相色谱（GC-MS）、紫外-可见和三维荧光结果表明，焦化废水中的大毒物降解为低毒有机物，大部分可溶性有机物被降解转化。该研究为电化学氧化处理焦化废水的工程实践提供了基础研究的可能。