Research Article

UCNPs@Zn0.5Cd0.5S Core-Shell and Yolk-Shell Nanostructures: Selective Synthesis, Characterization, and Near-Infrared-Mediated Photocatalytic Reduction of Cr(VI)

Figure 4

Fluorescence spectra (a) and UV–Vis absorbance (b) of different samples.
(a)
(b)