A novel Fe₅C₂@C catalyst bearing small iron carbide particles ∼10 nm in diameter was prepared using a simple thermal treatment of iron oxalate dihydrate cubes, employed in high-temperature Fischer–Tropsch synthesis.

Mesoporous SiO₂-supported Cu₂O nanoparticles as an egg-shell type catalyst were prepared by impregnation method.

Bifunctional Pd/Fe ₃ O ₄ /charcoal nanocatalysts are synthesized by simple solid-state grinding. Highly loaded Pd and Fe ₃ O ₄ nanoparticles are observed and exhibit high product time yield for Suzuki–Miyaura coupling reactions.

The use of nanostructure materials as heterogeneous catalysts in the synthesis of organic compounds have been receiving more attention in the rapid developing area of nanotechnology. In this review, we mainly focused on our own work on the synthesis of hybrid palladium–iron oxide nanoparticles. We discuss the synthesis of Pd–Fe₃O₄—both morphology-controlled synthesis of Pd–Fe₃O₄ and transition metal-loaded Pd–Fe₃O₄—as well as its application in various C–C coupling reactions. In the case of rose-like Pd–Fe₃O₄ hybrid nanoparticles, thermal decomposition can be used instead of oxidants or reductants, and morphology can be easily controlled. We have developed a method for the synthesis of nanoparticles that is facile and eco-friendly. The catalyst was recyclable for up to five continual cycles without significant loss of catalytic activity and may provide a great platform as a catalyst for other organic reactions in the near future.