reported platinum‐decorated PCN‐224 (PCN‐224‐Pt) NMOFs for enhanced PDT (Figure 6).[39] Due to the higher level of H2O2 in the tumor microenvironment, Pt nanoparticles with catalase‐like activity could catalyze the decomposition of intratumoral H2O2 to generate O2, which could facilitate the further generation of cytotoxic 1O2 to kill tumor cells. Here, CAT is linked to neoplasm.