Fig. 2

SEM images of a rGO, b Dy-MOF, c Cr-MOF, d Dy–Cr-MOF and e Dy–Cr-MOF/rGO Histogram and Surface plot of f rGO, g Dy-MOF, h Cr-MOF, i Dy–Cr-MOF and j Dy–Cr-MOF/rGO.

SEM images of a rGO, b Dy-MOF, c Cr-MOF, d Dy–Cr-MOF and e Dy–Cr-MOF/rGO Histogram and Surface plot of f rGO, g Dy-MOF, h Cr-MOF, i Dy–Cr-MOF and j Dy–Cr-MOF/rGO.