Abstract
This article reports on synthesis and X-ray photoemission spectroscopy (XPS) results regarding the development of silver nanoparticles (AgNPs) in CaO-SiO2–B2O3 bioactive glasses with three different Ag2O contents (0.7, 1, 3%). The analysis of the core level and valence band photoemission spectra is discussed in terms of AgNPs shape, size, and distribution at the sample surface for all investigated samples. A comparison with a theoretical valence band photoemission spectrum (VB-XPS) is presented to check the correlation between clusters size and electronic structure. Our data provide complete experimental evidence of the correlation between AgNPs size and electronic structure that has been predicted theoretically.
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