MXene, as an emerging two-dimensional (2D) material with ultrathin structure and fascinating physiochemical properties, has been widely explored in broad applications. Versatile functions of MXenes are continuously explored. This work presents distinctive feature of MXene-Ti₃C₂T_x nanosheets for free-radical (FRs) scavenging that never reported before. We demonstrated the mechanism and equation in regard to the reaction between Ti₃C₂T_x and H₂O₂, which was applied to design colorimetric H₂O₂ strip assay with good performance. The good FRs scavenging capability of Ti₃C₂T_x, including a series of reactive oxygen species (ROS) and reactive nitrogen species (RNS), was systemically confirmed. The antioxidation capability of Ti₃C₂T_x for protecting cells from oxidative damage was demonstrated using the oxidative damage model of alpha mouse liver 12 (AML-12) cells. This original work provides huge opportunities for MXenes in FR-related biomedical applications.

MXene作为一种新兴的二维（2D）材料，具有超薄结构和迷人的理化特性，在广泛的应用中得到了广泛的探索。不断探索 MXenes 的多功能功能。这项工作展示了用于清除自由基 (FRs)的 MXene-Ti ₃ C ₂ T _{x纳米片的独特特征，这是以前从未报道过的。我们论证了Ti 3} C ₂ T _x与H ₂ O ₂反应的机理和方程式，用于设计具有良好性能的比色H ₂ O ₂试纸法。_{Ti 3}良好的 FRs 清除能力C ₂ T _x，包括一系列活性氧（ROS）和活性氮（RNS），得到系统证实。使用α小鼠肝12（AML-12）细胞的氧化损伤模型证明了Ti ₃ C ₂ T _{x保护细胞免受氧化损伤的抗氧化能力。}这项原创工作为 MXenes 在 FR 相关的生物医学应用中提供了巨大的机会。