Sonochemical Preparation of Zirconia/Noble Metals Composite Nanopowders

抄録

The possibility of preparation of Pt/3Y-TZP, Pd/3Y-TZP, Au/3Y-TZP, and Pt(Au)/3Y-TZP nano-composites by sonochemical technique was studied. The sonochemically synthesized Pt (Pd, Au) nano-particles (~2 nm) were directly impregnated into the zirconia nano-aggregates (20 ~ 45nm). The morphology manipulation technique allowed production of the composite zirconia-based aggregates in which a significant fraction of the Pt, Pd and Au crystallites was embedded into the zirconia dense aggregates. The catalytic properties of composite nanopowders were studied and described.