Figure 2
From: Atrazine degradation through PEI-copper nanoparticles deposited onto montmorillonite and sand
SEM images of (a) unmodified MK10; arrows indicate layer structures, (b) MK10_PEI_Cu NPs; dotted ellipse show small exfoliation and insert show higher magnification and arrows indicating slight expansion of the layer structure to ~2 Ǻ (c) sand, and (d) sand_PEI-Cu NPs; dotted ellipses and insert show higher magnification and deposited PEI_Cu NPs.
