Colorimetric Detection of Sulfide Anions via Redox-Modulated Surface Chemistry and Morphology of Au-Hg Nanorods

Figure 4

UV-vis absorption spectra of (a) Au-HgNRs-I, (b) Au-HgNRs-II, and (c) Au-HgNRs-III solutions containing different concentrations of S^2-; (d) variation plots of shifts in LSPR peak wavelength () against the concentration of S^2-.

(a)

(b)

(c)

(d)