Figure 4: Sulphur sources and the Ag:S ratio influence Ag2S formation.
From: Dynamic protein coronas revealed as a modulator of silver nanoparticle sulphidation in vitro
TEM images of Ag NPs after 7 days incubation in PBS (a), PBS supplemented with 1% FBS (b) and PBS supplemented with L-cysteine and L-methionine at the same concentrations of amino acids as those found in RPMI-1640 (c) and corresponding EDS spectra (d); TEM images and corresponding EDS spectra (insets) of Ag NPs after 7 days incubation in RPMI-1640 supplemented with 1% FBS, with initial silver concentrations of 2 μg ml−1 (e), 10 μg ml−1 (f) and 100 μg ml−1 (g), with elemental mapping images provided in Supplementary Fig. 26. Scale bars are 100 nm (a–c) or 50 nm (e–g).
