Preparation of silver nanoparticles in hexagonal phase formed by nonionic Triton X-100 surfactant

Accumulation of Silver(I) Ion and Diamine Silver Complex by Aeromonas SH10 biomass

“…As the larger particle can cause the shift of absorption peak towards a longer wavelength, this result suggested that the silver nanoparticles grew with time. It has been shown that synthesized silver nanoparticles grew with time [20,15], which was in agreement with our finding (Fig. 4).…”

Antimicrobial silver-filled silica nanorattles with low immunotoxicity in dendritic cells

“…An increasing filling with silver results in a large band with a maximum at λ max = 405 nm and a small shoulder in the region of the FITC absorption. Since the presence of this small shoulder could potentially originate from larger AgNPs, 36,37,39 fluorescence spectroscopy confirmed the success of functionalization with the fluorescent dye with an FITC emission at λ max = 513 nm (Figure 1). Moreover, FTIR spectra ( Figure S5) of both non-fluorescent and fluorescent nanoparticles demonstrated the presence of the silica shell by exhibiting a broad band with a shoulder at 1054 cm −1 corresponding to the Si-O-Si siloxane bond vibrations ( Figure S5).…”

“…36,37 At a low concentration of AgNPs, their presence can be confirmed exclusively by UV-Vis spectroscopy ( Figure S3) due to the large background of the silica shell. Indeed, the prepared Ag@SiO 2 nanorattles exhibit a typical surface plasmon band of crystalline spherical AgNP at 410 nm, a typical absorption band for crystalline spherical AgNPs.…”

Silver-Nafion coated cylindrical carbon fiber microelectrode for amperometric monitoring of hydrogen peroxide heterogeneous catalytic decomposition

“…We suppose that Pluronic F127 behaves as a weak reducing agent forming seeding nanoparticles, which catalyze subsequent electroreduction. The formation of ultra small (3 nm, mean size) silver nanoparticles, enlarging towards 15 nm after 5 days was observed by Lee et al for AgNO 3 solution in Triton X-100 hexagonal phase [11]. Both Triton X-100 and Pluronic F127 molecules contain free hydroxyl groups, capable to reduce AgNO 3 .…”