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

<div>(a) UV–Vis spectra of the UV–Vis absorbance spectra of the Cr(VI) complex, showing the photochemical reduction ability of the UCNPs@Zn0.5Cd0.5S YSN towards photocatalytic reduction of Cr(VI) at given irradiation times using a Xe lamp. (b, c) Photochemical reduction kinetic curves of Cr(VI) aqueous solution under irradiation of NIR light and a simulated solar light, respectively. C0: the concentration of initial solution, Ct: the concentration at the irradiation time. (d) The three recycling tests of the photochemical reduction of Cr(VI) over the UCNPs@Zn0.5Cd0.5S YSN.</div>

Journal of Nanomaterials

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Figure 5

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

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