Preparation, characterization and catalytic reactivity of WO3@PdO core@shell nanospheres in the Mizoroki–Heck reaction

Abstract

Palladium oxide nanoparticles supported on tungsten oxide nanospheres were synthesized in one pot using an impregnation method. The prepared catalyst was thoroughly characterized by various physico-chemical methods. TEM images showed uniform dispersion of palladium oxide nanoparticles onto WO3 (~170–205 nm). The obtained WO3@PdO core@shell nanospheres exhibited excellent reactivity and stability in the Mizoroki–Heck cross-coupling reactions with different aryl halides and olefins. This catalyst can be easily recovered and reused in several runs.