Effect of Fe Doping on Photocatalytic Dye-Degradation and Antibacterial Activity of SnO₂ Nanoparticles

Figure 6

Optical absorption spectra and Tauc’s plot of (a) pure, (b) 0.01 M, (c) 0.03 M, and (d) 0.05 M Fe-SnO₂ NPs.