Fig. 5
From: Carbonized lignosulfonate-based porous nanocomposites for adsorption of environmental contaminants
SEM images and elemental maps of (a) Cu-adsorbed (1–5) and (b) methylene blue (MB)-adsorbed (6–10) nGO1-Gel1-LS0.1 composite and their surface and cross-sectional elemental compositions