Ni-Pd-Incorporated Fe3O4 Yolk-Shelled Nanospheres as Efficient Magnetically Recyclable Catalysts for Reduction of N-Containing Unsaturated Compounds

The use of metal-based heterogeneous catalysts for the degradation N-containing organic dyes has attracted much attention due to their excellent treatment efficiency and capability. Here, we report synthesis heterometals (Ni Pd)-incorporated Fe3O4 (Ni-Pd/Fe3O4) yolk-shelled nanospheres catalytic reduction using a facile combination solvothermal high-temperature annealing steps. Benefiting from magnetic properties structure support, as well uniformly dispersed active incorporated in shell yolk spherical nanoparticles, as-prepared Ni-Pd/Fe3O4 composite shows recyclability enhanced activity three (e.g., 4-nitrophenol, Congo red, methyl orange) compared with its mono metal counterparts Ni/Fe3O4 Pd/Fe3O4). In 4-nitrophenol reaction, was superior many Fe3O4-supported nanocatalysts reported within last five years. This work provides an effective strategy boost iron oxide-based materials via dual or even multiple heterometallic incorporation sheds new light on environmental catalysis.