The structural characterization of the metallic core of cysteine and glutathione capped silver nanoparticles (AgNPs) has been developed by means of high resolution transmission electron microscopy (HR-TEM), synchrotron X-ray diffraction (SXRD) and pair distribution function (PDF) analysis. The combined use of these experimental techniques demonstrates that the coated AgNPs are a nanoscale phase separated system where two phases coexist within the single grains: a fcc (cubic) phase and a hcp (hexagonal) phase. The relative bulk amount of the fcc and hcp phases has been estimated and a possible correlation with the capping agent fraction is proposed.
Occurrence of hcp and fcc diffraction domains within capped silver nanoparticles
Y. A. Diaz Fernandez;MALAVASI, LORENZO;MILANESE, CHIARA
2012-01-01
Abstract
The structural characterization of the metallic core of cysteine and glutathione capped silver nanoparticles (AgNPs) has been developed by means of high resolution transmission electron microscopy (HR-TEM), synchrotron X-ray diffraction (SXRD) and pair distribution function (PDF) analysis. The combined use of these experimental techniques demonstrates that the coated AgNPs are a nanoscale phase separated system where two phases coexist within the single grains: a fcc (cubic) phase and a hcp (hexagonal) phase. The relative bulk amount of the fcc and hcp phases has been estimated and a possible correlation with the capping agent fraction is proposed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
