In this study, the kinetic degradation of several typical organic pollutants was performed on a synthetic electrode (Ti/SnO₂–Sb/Co-βPbO₂). The surface structure and the electrochemical properties of the prepared electrode were investigated, confirming the successful preparation of the electrode using an electrochemical deposition method. The outer layer (Co-βPbO₂) played an important role in reducing the resistance of the electrode and improving its degradation efficiency. The results showed that indigo carmine (IC), p-nitrosodimethylaniline (RNO), and clothianidin (CLO) were effectively degraded within 20 min of electrolysis. Their degradation in the electrochemical process followed the first-order kinetic model with the degradation rate constant of IC being higher than that of RNO and CLO. This was proved by the difference in the reactivity of the target pollutants toward oxidizing radicals (i.e., •OH, SO₄^•-, and Cl•). Their second-order rate constant towards radicals were in the range of 10⁹ - 10¹⁰ M⁻¹ s⁻¹ with the highest value being that for IC: $k_{·\text{OH},\text{IC}}$ = 15.1 × 10⁹ M⁻¹ s⁻¹ and $k_{\mathrm{S}{{\mathrm{O}}_4}^{•-},\text{IC}}$ = 7.4 × 10⁹ M⁻¹ s⁻¹. The study calculated the contribution of some oxidizing species, including direct electron transfer (DET), •OH, SO₄^•-, and other reactive oxygen species (ROS). Solution pH, supporting electrolyte, and water matrix affected the degradation efficiency of pollutants and the contribution of the oxidizing species. Br⁻ and I⁻ ions enhanced the degradation rate of organic pollutants, while Fe²⁺, HCO₃⁻, and humic acid (HA) reduced it. In addition, the toxicity, total organic carbon (TOC) removal, mineralization current efficiency (MCE), energy consumption, recyclability and stability of the prepared electrode were studied, suggesting that the prepared Ti/SnO₂–Sb/Co-βPbO₂ is a good candidate for treating organic pollutants using the electrochemical oxidation process.

在这项研究中，几种典型有机污染物的动力学降解是在合成电极（Ti/SnO ₂ –Sb/Co-βPbO ₂）上进行的。研究了所制备电极的表面结构和电化学性能，证实了使用电化学沉积法成功制备了电极。外层（Co-βPbO ₂）在降低电极电阻和提高其降解效率方面发挥了重要作用。结果表明，靛蓝胭脂红（IC）、p-亚硝基二甲基苯胺 (RNO) 和噻虫胺 (CLO) 在电解后 20 分钟内被有效降解。它们在电化学过程中的降解遵循一级动力学模型，IC的降解速率常数高于RNO和CLO。目标污染物对氧化自由基（即•OH、SO ₄ ^•-和Cl•）的反应性差异证明了这一点。它们对自由基的二阶速率常数在 10 ⁹ - 10 ¹⁰  M ⁻¹  s ⁻¹范围内，最高值是 IC：$k_{·\text{哦},\text{我知道了}}$ = 15.1 × 10 ⁹  M ⁻¹  s ⁻¹和$k_{\mathrm{小号}{{\mathrm{欧}}_{\mathrm{4个}}}^{•-},\text{我知道了}}$ = 7.4 × 10 ⁹  M ⁻¹ 秒⁻¹。该研究计算了一些氧化物质的贡献，包括直接电子转移 (DET)、•OH、SO ₄ ^•-和其他活性氧 (ROS)。溶液 pH 值、支持电解质和水基质影响污染物的降解效率和氧化物质的贡献。Br ⁻和 I ⁻离子提高了有机污染物的降解率，而 Fe ²⁺、HCO ₃ ⁻, 和腐植酸 (HA) 减少了它。此外，对所制备电极的毒性、总有机碳（TOC）去除率、矿化电流效率（MCE）、能耗、可回收性和稳定性进行了研究，表明所制备的Ti/SnO ₂ –Sb/Co-βPbO ₂是使用电化学氧化过程处理有机污染物的良好候选者。