Formation and growth of palladium nanoparticles inside porous poly(4-vinyl-pyridine) monitored by operando techniques: The role of different reducing agents

6533b82cfe1ef96bd128ff70

RESEARCH PRODUCT

Formation and growth of palladium nanoparticles inside porous poly(4-vinyl-pyridine) monitored by operando techniques: The role of different reducing agents

Giuseppe Portale Alessandro Longo Riccardo Pellegrini Giovanni Agostini Elisa Borfecchia Francesco Giannici Andrea Lazzarini Andrea Lazzarini Elena Groppo Elena Groppo Carlo Lamberti

subject

inorganic chemicals Reducing agent Infrared spectroscopy chemistry.chemical_element 02 engineering and technology Thermal treatment 010402 general chemistry Photochemistry 01 natural sciences AEROBIC ALCOHOL OXIDATION Catalysis Catalysi Catalysis P4VP RUTHENIUM NANOPARTICLES Molecule Organic chemistry Operando CATALYTIC-ACTIVITY chemistry.chemical_classification PD NANOPARTICLES DRIFT; Operando; P4VP; Palladium nanoparticles; SAXS; XANES Chemistry IN-SITU Chemistry (all)SAXS General Chemistry Polymer Palladium nanoparticle SELECTIVE OXIDATION 021001 nanoscience & nanotechnology Palladium nanoparticles XANES X-RAY-SCATTERING PARTICLE-SIZE 0104 chemical sciences DRIFT Colloidal gold GOLD NANOPARTICLES VIBRATIONAL PROPERTIES DRIFT; Operando; P4VP; Palladium nanoparticles; SAXS; XANES; Catalysis; Chemistry (all)0210 nano-technology Palladium

description

In this work we followed the formation of palladium nanoparticles, starting from palladium (II) acetate precursor, inside a poly(4-vinylpyridine-co-divinylbenzene) polymer in presence of different reducing agents. The formation and growth of palladium nanoparticles in presence of H-2 was followed as a function of temperature by simultaneous XANES-SAXS techniques, coupled with DRIFT spectroscopy in operando conditions. It was found that the pyridyl functional groups in the polymer plays a fundamental role in the stabilization of the palladium (II) acetate precursor, as well as in the stabilization of the palladium nanoparticles. The effect of a thermal treatment in alcohol (ethanol and 2-propanol) was preliminarily investigated by means of DRIFT spectroscopy in operando conditions. We found that alcohols act as reducing agents for Pd(OAc)(2). The obtained palladium nanoparticles were preliminarily characterized by means of IR spectroscopy using CO as probe molecule. (C) 2016 Elsevier B.V. All rights reserved.

year	journal	country	edition	language
2017-04-01	Catalysis Today

https://doi.org/10.1016/j.cattod.2016.06.037