XAFS AND SAXS STUDIES OF THE INTERACTION OF DIFFERENT CAPPING POLYMERS WITH PLATINUM NANOPARTICLES

KOEBEL, M. M.; REQUEJO, F. G.; CRAIEVICH, A. F.; RAMALLO-LÓPEZ, J. M.; GIOVANETTI, L.; FOXE, M.; JONES, L.; SOMORJAI, G. A.

Florianopolis, Brasil

Conferencia; 5th Brasilian MRS Meeting; 2006

Pt nanoparticles (NP)were synthesized by seeded growth and direct ethylene glycol reduction methods and stabilized with two different polymers: poly-(vinylpyrrolidone) (PVP) and sodium polyacrylate (PAA-Na). The shape and size distribution of the NP was determined using transmission electron microscopy (TEM). Complementary, small angle X-ray scattering (SAXS) experiments were performed to estimate the average NP size and size distribution.