Open AccessPd nanoparticles formation inside porous polymeric scaffolds followed byin situXANES/SAXS
Author(s) -
Alessandro Longo,
Carlo Lamberti,
Giovanni Agostini,
Elisa Borfecchia,
Andrea Lazzarini,
W. Liu,
Francesco Giannici,
Giuseppe Portale,
Elena Groppo
Publication year - 2016
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/712/1/012039
Subject(s) - small angle x ray scattering , xanes , in situ , polystyrene , materials science , nanoparticle , chemical engineering , porosity , phase (matter) , palladium , characterization (materials science) , polymer , spectroscopy , nanotechnology , chemistry , scattering , organic chemistry , catalysis , composite material , physics , engineering , quantum mechanics , optics
International audienceSimultaneous time-resolved SAXS and XANES techniques were employed to follow in situ the formation of Pd nanoparticles from palladium acetate precursor in two porous polymeric supports: polystyrene (PS) and poly(4-vinyl-pyridine) (P4VP). In this study we have investigated the effect of the use of different reducing agents (H-2 and CO) from the gas phase. These results, in conjunction with data obtained by diffuse reflectance IR (DRIFT) spectroscopy and TEM measurements, allowed us to unravel the different roles played by gaseous H-2 and CO in the formation of the Pd nanoparticles for both PS and P4VP hosting scaffold