Figure 3
Wide-viewed TEM image (a), HR-TEM image of one single particle(a: inset, scale bar: 2 nm), STEM-HAADF image of one single particle (b), point-by-point EDX scanning of one single particle (c), high energy resolution XPS for Zn (d), high energy resolution XPS for Co (e) and XRD (f) of CoZn@Zn(1-x)CoxOy nanohybrids synthesized using all NMP-phased reaction systems.
JCPDS No for XRD analysis: fcc Co, 15-0806; hcp Co, 05-0727; wurtzite ZnO, 36-1451; spinel ZnCo2O4, 23-1390. In XRD (vi), 
: the corresponding metallic phases; 
and *: the corresponding metal oxides.
