Palladium nanoparticles decorated MXene for plasmon-enhanced photocatalysis

다국어 초록 (Multilingual Abstract)

Two-dimensional MXene nanomaterials have found a wide application range in recent years. Here, Ti3C2MXene nanosheets exhibiting inherent photothermal activity reveal synergistic plasmon-enhanced photocatalyticproperties upon rational surface decoration with palladium nanoparticles (NPs). Pd incorporationinduces a 1.7-fold increase in the number of defect sites on the MXene surface. Mostimportantly, the introduced Pd nanoparticles favour an effective separation and collection of localizedsurface plasmon resonance (LSPR)-induced hot charge carriers generated at the surface of semimetallicTi3C2 NS, further facilitating the generation of hydrogen peroxide (H2O2). The generated H2O2is sequentially decomposed to hydroxyl radicals via the peroxidase (POD)-like activity of Pd NPs. ThePd@MXene shows approximately 2-fold enhancement of photocatalytic activity and excellent photostabilityunder laser irradiation. Taken together, this study highlights the promise of constructing active andstable MXene-based nanohybrids for highly effective photo-responsive nanomedicine.

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