In this work, to promote the catalytic efficiency of Fe₂O₃ and achieve the facile retrieve and recycle from the solution, Ni²⁺ doped Fe₂O₃ in-situ growing on a nickel foam (NF) (Ni-Fe₂O₃/NF) was fabricated using NF as the Ni²⁺ internal doping source and the substrate support and used in the peroxymonosulfate (PMS) assisting visible-light photoelectrochemical oxidation (EC+Photo+catalyst+PMS) system for sulfamethoxazole (SMX) degradation. Benefiting from more Fe²⁺ and oxygen vacancies generation after Ni²⁺, and the enhanced electrical conductivity owing to NF substrate, the optimum Ni-Fe₂O₃/NF(II) exhibited excellent catalytic efficiency. 100% of SMX was removed in 10 min in the EC+Photo+Ni-Fe₂O₃/NF(II)+PMS system and the pseudo-first order kinetic constant (k_obs) was 45.10×10^-2 min^-1, being about 9.80 folds of powder Fe₂O₃. Meantime, due to the employed loading method benefits in the Ni-Fe₂O₃ uniformly and steady loading on NF, Ni-Fe₂O₃/NF(II) demonstrated the excellent stability and recycle ability. Reactive oxygen species (ROSs) quenching and electron paramagnetic resonance evidenced that photo-induced hole (h⁺), hydroxy radical (^•OH) and superoxide radical (^•O₂⁻) contributed to SMX degradation. And the SMX degradation pathways were deduced according to the determined degraded products and density functional theory (DFT) calculation. This study developed one convenient separation and recovery catalyst suitable for EC+Photo+catalyst+PMS system for efficient and environmentally friendly antibiotics removal in water.

_{在这项工作中，为了提高 Fe 2} O ₃的催化效率并实现从溶液中的轻松回收和再循环，Ni ²⁺掺杂的 Fe ₂ O ₃在镍泡沫（NF）上原位生长（Ni-Fe ₂ O ₃ /NF)以NF为Ni ²⁺内掺杂源和衬底载体制备，用于过一硫酸盐(PMS)辅助可见光光电化学氧化(EC+Photo+catalyst+PMS)体系降解磺胺甲恶唑(SMX) . 受益于Ni ^{2+后更多的 Fe 2+}和氧空位的产生，以及由于 NF 底物增强的导电性，最佳的 Ni-Fe ₂ O ₃ /NF(II) 表现出优异的催化效率。_{EC+Photo+Ni-Fe 2} O ₃ /NF(II)+PMS体系10分钟100%去除SMX ，准一级动力学常数( k _obs )为45.10×10 ^-2 min ^-1，约为粉体Fe ₂ O ₃的9.80倍。同时，由于采用的加载方法有利于 Ni-Fe ₂ O ₃均匀稳定地加载在 NF 上，Ni-Fe ₂ O ₃/NF(II)表现出优异的稳定性和循环能力。活性氧 (ROS) 猝灭和电子顺磁共振证明光致空穴 ( h ⁺ )、羟基自由基 ( ^• OH) 和超氧自由基 ( ^• O ₂ ⁻ ) 对 SMX 降解有贡献。并根据测定的降解产物和密度泛函理论（DFT）计算推导了SMX的降解途径。本研究开发了一种适用于 EC+Photo+catalyst+PMS 系统的便捷分离回收催化剂，用于高效环保地去除水中的抗生素。