Wastewater remediation using micro/nanomotors is a hot topic, and MnO₂ based materials have become fascinating alternatives to rare noble metal-based micro/nanomotors. Herein, we demonstrate facile and large-scale synthesis of Fe-MnO₂ core-shell micromotors for antibiotic pollutant removal. Heat-treatment results in a phase transformation of MnO₂ with formation of iron oxides and partially exfoliates the MnO₂ nanoplate shell structure to promote mobility. The iron-manganese oxide micromotors exhibit an efficient removal of tetracycline antibiotics via a combination of catalytic degradation and adsorptive bubble separation. For the first time, atomic H* was found to participate in the micromotor-assisted degradation process, resulting in optimal Fenton reaction in neutral conditions with a good decontamination performance. Owing to the merits of abundance, magnetic recovery, facile fabrication, good motion, and environmental friendliness, as well as decontamination performance in a wide pH range, these core-shell micromotors demonstrate a promising candidate in practical wastewater treatment.

使用微/纳米电机修复废水是一个热门话题，基于 MnO ₂的材料已成为稀有贵金属基微/纳米电机的迷人替代品。_{在此，我们展示了用于去除抗生素污染物的 Fe-MnO 2}核壳微型电机的简便和大规模合成。热处理导致 MnO ₂发生相变并形成氧化铁并部分剥落 MnO ₂纳米板壳结构以促进流动性。铁锰氧化物微电机通过催化降解和吸附气泡分离的组合有效去除四环素抗生素。首次发现原子 H* 参与了微电机辅助降解过程，从而在中性条件下实现了最佳的芬顿反应，具有良好的去污性能。由于具有丰富、磁回收、易于制造、良好的运动和环境友好等优点，以及在较宽的 pH 值范围内的去污性能，这些核壳微型电机在实际废水处理中表现出有希望的候选者。