Fig. 5

SEM micrographs showing a untreated handsheet paper; b after seeding with ZnO nanoparticles; c ZnO nanorods grown on paper at a concentration of 10 mM for 10 h; d ZnO nanorods grown on paper at a concentration of 10 mM for 20 h; e ZnO nanorods grown on paper at a concentration of 20 mM for 10 h; and f ZnO nanorods grown on paper at a concentration of 20 mM for 20 h [137]