Figure 3

(a), (a') SEM image for Na-CMC–PAAm (80%/20%) blend, and the blend loaded with (b), (b') α-Fe₂O₃, (c), (c') GO and (d,d') CuO, respectively. The scale bar and magnification are 20 µm and 508 × in the left column (a)–(d) and are 200 nm and 27.53 kx in the right column(a')–(d').