Fig. 1. (a) Characterization of the Te-CDs by DLS images, (b) the zeta potential, (c) XRD analysis, (d) the TEM images, and (e) time course of Te-CDs (5.0 μg ml–1) as measured by a spectrofluorometer. The Te-CDs were oxidized by 1 equiv. of added O2˙–, after which the solution was treated with 2 equiv. of GSH; (f) fluorescence redox cycle responses of Te-CDs. The Te-CDs were oxidized by 1 equiv. of added O2˙–, after which the solution was treated with 2 equiv. of GSH.
