Fig. 1
The morphology and structure characterization of DMONs. A–C TEM images of DMONs in low, medium, and high magnifications. D, E SEM images of DMONs in low and high magnifications. F The SEM images and G the corresponding elemental Si, O and S EDS scanning profiles of the DMONs marked with a white dashed line. H The Zeta potential of DMONs and DMONs-NH2. I N2 absorption–desorption isotherm of DMONs