Fig. 1: Morphology and structural characterization of ZnSe_0.7Te_0.3@C.

a Schematic illustration of the preparation process of ZnSe_0.7Te_0.3@C. b FESEM and c TEM images of ZnSe_0.7Te_0.3@C. d and e STEM–EDX elemental mapping of ZnSe_0.7Te_0.3@C: C (yellow), N (azure), Te (blue), Se (red), and Zn (green).