Structural and morphological properties of silver nanoparticles–phosphate glass composites

The effect of ionic and metallic silver on the crystalline phases developed in CaO–Al2O3–TiO2–P2O5 glasses

“…Based on Fig.8a, the location and the shape of the absorption peaks in the air annealed glasses are compatible with the SPR (surface plasmon resonance) peak of the metallic silver clusters [34][35][36][37][38]. In accordance with the DTA and XRD analysis, these clusters, which are formed during the melting and air annealing steps, cannot influence the crystallization behavior.…”

“…In the case of the reduced glasses (Fig. 8b), shifting of the initial absorption peak into the longer wavelengths can be related to the enlargement of silver clusters' size during the hydrogen heat treatment [34][35][36][37][38]. Furthermore, the first new absorption peaks located at around 300 nm are somehow matched with the absorption peak of the silver aggregates with ionic nature [38].…”

The study of the structure and bioactivity of the B2O3 • Na2O • P2O5 system

“…), the absence of the 770 cm −1 band and the 1200–1500 cm −1 shoulder together with the presence of several new bands clearly indicate the pronounced signature of the P 2 O 5 network former. Therefore, the Raman band around 700 cm −1 is more probable because of the P–O–P symmetric stretch in Q 2 species . Further, in the second spectral region (900–1300 cm −1 ), three bands were recorded as follows: (1) at 1040 cm −1 , (2) at 1110 cm −1 , and (3) at 1250 cm −1 .…”

Structural Characteristics of Antibacterial Bioresorbable Phosphate Glass

“…[24] Absorption bands are seen in the UV-vis spectra at 200-230 nm and 400-500 nm in the presence of even small concentrations of metallic nano-particles, which refer to silver electronic transitions and surface plasmon resonances, respectively. [25] The UV-spectra from the samples prepared here were measured on a Cary 400 Scan UV-Visible Spectrophotometer and no evidence of silver nano-particulates was observed.…”