Unlocking Efficient Redox Cycle and Electron Transfer in Ti ₃ C ₂ ‐Derived TiO ₂ /Co ₃ O ₄ Nanocomposite to Facilitate Antibiotic Degradation via Peroxymonosulfate Activation

Developing highly efficient and stable catalysts for peroxymonosulfate (PMS) activation is crucial for antibiotic degradation in aqueous environments. Herein, Ti ₃ C ₂ ‐derived TiO ₂ /Co ₃ O ₄ (MXC) nanocomposite was created to enable quick electron transfer and a long‐lasting Co ²⁺ /Co ³⁺ redox cycle. In addition to impeding nanosheet restacking, the in situ synthesis of TiO ₂ from MXene offers Co ₃ O ₄ nanoparticles an abundant supply of anchoring sites, resulting in close interfacial contact. The strong electronic coupling between TiO ₂ and Co ₃ O ₄ nanoparticles considerably accelerates the charge migration, thereby enhancing PMS activation efficiency. Consequently, the MXC composite exhibits outstanding degradation performance toward norfloxacin (NOR) pollutants. The MXC ‐ 60% nanocomposite showed a good rate of NOR deterioration of about 96% after 20 min of exposure to PMS. The catalytic efficacy remained intact even after the third cycle, according to the recyclability analysis, indicating its remarkable reliability for frequent usage. This work clarifies how TiO ₂ produced from MXene and Co ₃ O ₄ nanoparticles works in concert to enhance redox dynamics and interfacial electron transport, providing a viable path toward the logical development of sophisticated catalysts for environmental remediation.