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Two-dimensional (2D) nanomaterial hybrid with metal nanoferrite nanoparticles will enhance their catalytic activity and photothermal therapy (PTT) through their synergistic coupling effects. This strategy also increases the photothermal conversion efficiency (PCE), blood circulation time, biostability, and cellular uptake efficiency of 2D materials. Herein, we first time report a new class of cerium ferrite (CeFe₂O₄) nanoparticles (NPs) decorated onto branched polyethyleneimine (bPEI) coated flower-like molybdenum disulfide nanoflowers (MoS₂ NFs). The CeFe₂O₄ NPs on the MoS₂ NF surface could be designed rationally to improve deficiencies and refine the PCE of MoS₂ NFs and tumor ablation effectiveness in the treated MDA-MB-231 breast cells. Importantly, MoS₂-bPEI-CeFe₂O₄ NFs consist of MoS₂ in the inner core and CeFe₂O₄ in the outer shell, designed to generate heat efficiently and enhanced …