Fig. 2 FESEM images of (a) ZIF-67, (b) CoP polyhedron, (c)
ZnCdS, and (d) ZnCdS/Co3O4 QDs; (f) TEM
image of Co3O4 QDs; (g, h) EDS and
element mapping images of ZnCdS/Co3O4QDs; (i) FESEM images of CoP/ZnCdS/Co3O4QDs; (j-m) EDS, HRTEM, and element mapping images of
CoP/ZnCdS/Co3O4 QDs.