Palladium particles having decahedral or icosahedral shapes were synthesized at 160C using a solutothermal process in the presence of acetylacetone and ethylene glycol. Scanning electron microscope and transmission electron microscope investigations revealed that these particles were multiply twinned with an average diameter of around 1μm. The effect of the solvents was explored, and acetylacetone was found to play a key role in the formation of multiply twinned Pd particles.

Preparation of Multiply Twinned Palladium Particles with Five-Fold Symmetry via a Convenient Solution Route. Q.Li, M.Shao, S.Zhang, X.Liu, G.Li, K.Jiang, Y.Qian: Journal of Crystal Growth, 2002, 243[2], 327-30