Fig. 2 | Scientific Reports

Fig. 2

From: Iron(III) edta-accelerated growth of gold/silver core/shell nanoparticles for wide-range colorimetric detection of hydrogen peroxide

Fig. 2

(A, C, F) Absorbance spectrum, intensity size distribution, and TEM image of as-prepared AuNSs. Absorbance spectra, intensity size distributions, and TEM images illustrating Au–Ag core/shell formation in the absence (B: red line) and presence (D, G, B: blue line) of iron(III) edta, and the inhibition of core/shell formation in the presence of H2O2 (E, H, B: green line). The concentrations of silver ions (Ag+), MES buffer (B), ascorbic acid (AA), iron(III) edta, and H2O2 were 210 µM, 5.0 mM (pH 7.0), 150 µM, 25 µM, and 125 µM, respectively.

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