0000000001001330

AUTHOR

Liu Wei

showing 1 related works from this author

Formation and Growth of Pd Nanoparticles Inside a Highly Cross-Linked Polystyrene Support: Role of the Reducing Agent

2014

Simultaneous time-resolved SAXS and XANES techniques were employed to follow in situ the formation of Pd nanoparticles in a porous polystyrene support, using palladium acetate as a precursor and gaseous H2 or CO as reducing agents. These results, in conjunction with data obtained by diffuse reflectance UV–vis and DRIFT spectroscopy and TEM measurements, allowed unraveling of the different roles played by gaseous H2 and CO in the formation of the Pd nanoparticles. In particular, it was found that the reducing agent affects (i) the reduction rate (which is faster in the presence of CO) and (ii) the properties of the hosted nanoparticles, in terms of size (bigger with CO), morphology (spherica…

Materials scienceExtended X-ray absorption fine structureReducing agentSmall-angle X-ray scatteringchemistry.chemical_elementNanoparticlePd nanoparticles; SAXS; EXAFSSAXSXANESSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsCrystallographychemistry.chemical_compoundEXAFSGeneral EnergyPd nanoparticleschemistryChemical engineeringPalladium nanoparticles time-resolved X-ray Absorption Spectroscopy Small Angle X-ray Spectroscopy Transmission Electron MicroscopyDiffuse reflectionPolystyrenePhysical and Theoretical ChemistryPalladium
researchProduct