Hexafluoropropylene oxide dimer acid (HFPO-DA) and its homologues, as perfluorinated ether alkyl substances with strong antioxidant properties, have rarely been reported by electrooxidation processes to achieve good results. Herein, we report the use of an oxygen defect stacking strategy to construct Zn-doped SnO₂-Ti₄O₇ for the first time and enhance the electrochemical activity of Ti₄O₇. Compared with the original Ti₄O₇, the Zn-doped SnO₂-Ti₄O₇ showed a 64.4% reduction in interfacial charge transfer resistance, a 17.5% increase in the cumulative rate of •OH generation, and an enhanced oxygen vacancy concentration. The Zn-doped SnO₂-Ti₄O₇ anode exhibited high catalytic efficiency of 96.4% for HFPO-DA within 3.5 h at 40 mA/cm². Hexafluoropropylene oxide trimer and tetramer acid exhibit more difficult degradation due to the protective effect of the -CF₃ branched chain and the addition of the ether oxygen atom leading to a significant increase in the C-F bond dissociation energy. The degradation rates of 10 cyclic degradation experiments and the leaching concentrations of Zn and Sn after 22 electrolysis experiments demonstrated the good stability of the electrodes. In addition, the aqueous toxicity of HFPO-DA and its degradation products was evaluated. This study analyzed the electrooxidation process of HFPO-DA and its homologues for the first time, and provided some new insights.

六氟环氧丙烷二聚酸（HFPO-DA）及其同系物作为具有强抗氧化性能的全氟醚烷基物质，鲜有通过电氧化工艺取得良好效果的报道。在此，我们首次报道了使用氧缺陷堆叠策略来构建Zn掺杂的SnO ₂ -Ti ₄ O _{7并增强Ti 4} O ₇的电化学活性。与原始Ti ₄ O ₇相比，Zn掺杂的SnO ₂ -Ti ₄ O ₇结果表明，界面电荷转移阻力降低了 64.4%，•OH 生成的累积速率增加了 17.5%，氧空位浓度增加。Zn 掺杂的 SnO ₂ -Ti ₄ O ₇阳极在 40 mA/cm ²下在 3.5 小时内对 HFPO-DA 表现出 96.4% 的高催化效率。_{由于-CF 3}的保护作用，六氟环氧丙烷三聚体和四聚体酸表现出更难降解支链和醚氧原子的添加导致 CF 键解离能显着增加。10次​​循环降解实验的降解率和22次电解实验后Zn和Sn的浸出浓度表明电极具有良好的稳定性。此外，还评估了 HFPO-DA 及其降解产物的水毒性。本研究首次分析了HFPO-DA及其同系物的电氧化过程，并提供了一些新的见解。