Supported Pd nanoparticles prepared by a modified water-in-oil microemulsion method

Supported Pd nanoparticles (1.6 wt. %) with different diameters were synthesized by the modified water-in-oil microemulsion method using hydrazine as reducing agent. The size of palladium nanoparticles was investigated by varying the nature of the organic surfactant and solvent. The catalysts were characterized by XRD, XPS, ICP, and TEM. Supported palladium nanoparticles (1–8 nm) were obtained. The results confirmed the dependence of the particle size on the nature of organic surfactants. Smaller particles were obtained with organic solvents and anionic surfactants