Developing the efficiently degradation of organic pollutants in heterogeneous Electro-Fenton (E-F) process was still a challenge. In this work, the synthesized CeO₂ and MoS₂ were used to modify graphite felt (GF) for obtaining a novel electrode defined as CeO₂@MoS₂@GF, constructing a heterogeneous E-F system that could in-situ electrically generate and activate H₂O₂, thereby efficiently degrading sulfamethoxazole (SMX) in wastewater. The electrochemical performance and catalytic activity of CeO₂@MoS₂@GF electrode was evaluated by electrochemical tests (LSV/EIS/CV curves and RDE test) and effect of different experimental conditions (SMX concentration, current density and initial pH values). The E-F system using CeO₂@MoS₂@GF electrode realized rapid SMX degradation of 90% within 20 min and high TOC removal of 87.6% within 120 min, this excellent performance attributed to the efficient conversion between Ce(Ⅳ) and Ce(Ⅲ) under the presence of Mo(IV), as well as the effective utilization of oxygen vacancies. Furthermore, the E-F process mediated by CeO₂@MoS₂@GF electrode had excellent stability and cycle degradation performance as well as low energy consumption (9.1 kWh kg⁻¹). Besides, this system presented a satisfactory detoxification effect towards degradation intermediates with high toxicity, as well as high adaptability in different water sources. Finally, the mechanism of E-F system using CeO₂@MoS₂@GF electrode and possible SMX degradation pathways were proposed. This work offered inspiration for developing superior heterogeneous E-F cathode materials and contributed to the practical application of E-F process in wastewater treatment.

在多相电芬顿 (EF) 过程中开发有机污染物的有效降解仍然是一个挑战。在这项工作中，合成的 CeO ₂和 MoS ₂用于修饰石墨毡 (GF)，以获得定义为 CeO ₂ @MoS ₂ @GF 的新型电极，构建了一个可以原位电生成和激活 H 的异质 EF 系统₂ O ₂，​​从而高效降解废水中的磺胺甲恶唑（SMX）。_{CeO 2} @MoS ₂的电化学性能和催化活性@GF 电极通过电化学测试（LSV/EIS/CV 曲线和 RDE 测试）和不同实验条件（SMX 浓度、电流密度和初始 pH 值）的影响进行评估。_{使用 CeO 2} @MoS ₂ @GF 电极的 EF 系统在 20 分钟内实现了 90% 的 SMX 快速降解，在 120 分钟内实现了 87.6% 的高 TOC 去除，这种优异的性能归功于 Ce(IV) 和 Ce(III) 之间的高效转化) 在 Mo(IV) 的存在下，以及氧空位的有效利用。_{此外，CeO 2} @MoS ₂ @GF电极介导的EF过程具有优异的稳定性和循环降解性能以及低能耗（9.1 kWh kg ⁻¹). 此外，该体系对高毒性的降解中间体具有令人满意的解毒效果，并且对不同水源具有较高的适应性。最后，提出了使用CeO ₂ @MoS ₂ @GF电极的EF系统的机理和可能的SMX降解途径。这项工作为开发优质的非均相 EF 阴极材料提供了灵感，并有助于 EF 工艺在废水处理中的实际应用。