Fig. 14. Images of the antibacterial assays of SBA/CuO (a1 and c1), SBA + CuO (b1 and d1), SBA/ZnO (a2 and c2), SBA + ZnO (b2 and d2), SBA/CuZnO (a3 and c3) and SBA + CuZnO (b3 and d3) inhibit E. coli (a and b) and S. aureus (c and d) (the scale in the picture is 20 μm). Their antibacterial reduction rate with E. coli and S. aureus (e).