Magnetic nanoscale zero-valent iron (nZVI)@Ti₃C₂-based MXene nanosheets were synthesized via an in-situ reductive deposition method, and were characterized as a novel Fenton-like catalyst for ranitidine degradation. The vast majority of ranitidine was found to be mineralized after 30 min of reaction time with 91.1 % of removal efficiency and the removal of 63.3 % of total organic carbon (TOC). Results showed that the nZVI@Ti₃C₂-based MXene nanosheets had a synergistic effect enhancing the catalyst chemical reactivity and stability. In particular, Ti₃C₂-based MXene was found to restrain the agglomeration of nZVI particles (nZVIPs) and promote electron transfer between magnetic particles with a diameter of approximately 10−40 nm. Ranitidine molecules were decomposed mainly by hydroxyl radicals (∙OH) attack especially the surface-bound ∙OH_ads. This study provided a completely new insight into the mode of surface inactivation of nZVIPs under different solution pH conditions, establishing that this novel catalyst was suitable for use under a wide pH range.

通过原位还原沉积法合成了磁性纳米级零价铁（nZVI）@Ti ₃ C ₂基的MXene纳米片，并将其表征为新颖的雷尼替丁降解类Fenton催化剂。发现大多数雷尼替丁在30分钟的反应时间后矿化，去除效率为91.1％，总有机碳（TOC）的去除率为63.3％。结果表明，基于nZVI @ Ti ₃ C ₂的MXene纳米片具有协同作用，可增强催化剂的化学反应性和稳定性。特别是Ti ₃ C ₂发现基于MXene的MXene可以抑制nZVI粒子（nZVIPs）的团聚，并促进直径约10-40 nm的磁性粒子之间的电子转移。雷尼替丁分子主要被羟基自由基（∙ OH）侵蚀而分解，尤其是表面结合的∙ OH_广告。这项研究为在不同溶液pH条件下nZVIPs的表面失活模式提供了全新的认识，从而确定了这种新型催化剂适合在宽pH范围内使用。