Figure 5
SEM images of (a) Cu@CuS-2-3 that obtained from the third reaction at 100 °C for 2 h, (b) CuS@Cu9S5-1 that obtained by cation exchange, (c) XRD pattern of CuS@Cu9S5-1, (d) EDX elemental mapping images for Cu and S of Cu@CuS-2, (e,f) SEM images in low and high magnification of Cu@CuS-2 after degradation of MB.
