Magnetic Pd nanocatalyst (Fe3O4@Pd) for C-C bond formation and hydrogenation reactions

CATALINA BIGLIONE; ARIEL L. CAPPELLETTI; MIRIAM C. STRUMIA; SANDRA E. MARTIN; PAULA M. UBERMAN

JOURNAL OF NANOPARTICLE RESEARCH

SPRINGER

Año: 2018 vol. 20 p. 1 - 16

1388-0764

Small core-shell Fe3O4@Pd superparamagnetic nanoparticles (MNPs) were obtained with good control in size and shape distribution by metal-complex thermal decomposition in organic media. The role of the stabilizer in the synthesis of magnetic nanoparticles was studied, employing oleylamine (OA) and triphenylphosphine (TPP) and triphenylamine (TPA). The results revealed that, among the stabilizer investigated, the presence of oleylamine in the reaction media is crucial in order to obtain an uniform shell of Pd(0) in Fe3O4@Pd MNPs. The synthesized core-shell MNPs were tested in Pd-catalyzed Heck-Mizoroki and Suzuki-Miyaura coupling reactions, and p-chloronitrobenzene hydrogenation. High conversion, good reaction yields and great reaction TOF values were achieved in the three reaction systems with this nanocatalyst. The core-shell nanoparticle was easily recovered by a simple magnetic separation using a neodymium commercial magnet, which allowed performing up to four cycles of reuse.