The escalating global water crisis demands innovative solutions. This review highlights the transformative role of metal–organic frameworks (MOFs) in wastewater treatment, integrating green, scalable synthesis (e.g., mechanochemistry, continuous-flow, supercritical fluid methods) with advanced functionalization. It covers diverse pollutants, performance in real matrices, removal mechanisms, and practical deployment platforms. Key challenges and future directions are discussed, offering a roadmap toward sustainable, industrial-scale MOF applications for water purification.

Nanozymes, engineered nanomaterials that mimic natural enzyme activity, have emerged as powerful tools in precision cancer therapy due to their ability to generate reactive oxygen species (ROS), modulate the tumor microenvironment (TME), and facilitate cascade catalytic reactions. This review presents a comprehensive evaluation of recent innovations in nanozyme structural engineering aimed at improving catalytic performance, substrate specificity, and biocompatibility. Key design strategies, including dimensional tailoring, valence state tuning, and surface functionalisation, are discussed in the context of tumor-targeted therapies. Special focus is given to multifunctional and stimuli-responsive nanozymes that adapt to TME conditions or external triggers like light and pH. Despite significant progress, barriers such as biosafety, delivery efficiency, and lack of standardized catalytic performance metrics remain. This review critically addresses these challenges and highlights state-of-the-art nanozyme platforms, such as single-atom catalysts and cascade systems, which are leading the field toward clinical translation. Finally, it proposes strategic directions to bridge current knowledge gaps and advance nanozymes from bench to bedside, positioning them as next-generation catalytic platforms for personalized oncology.

The uniform and localized corrosion behaviour of sintered Ti–Ni containing niobium and copper additions were studied using potentiodynamic and cyclic polarization measurements in 0.9% sodium chloride. Results indicated that copper and niobium addition did not have significant effects on the uniform corrosion characteristics, but significantly improved the pitting corrosion resistance. Both copper and niobium additions significantly increased the re-passivation potentials, while copper was observed to reduce the pitting hysteresis loop area. Alloys containing 15% copper and 2% niobium additions depicted the most improved pitting corrosion resistance, and increased the re-passivation value from −315.60mV to a high re-passivation potential of 840.68mV