Photocatalysis and Bandgap Engineering Using ZnO Nanocomposites

Figure 6

(a) UV-Vis diffuse reflectance spectra of the electrospun nanofibers: (A) ZnO nanofibers, (B) ZnO-SnO₂ nanofibers, and (C) SnO₂ nanofibers [180]. (b) Photocatalytic activity of the ZnO-SnO₂ nanofibers for RB degradation with three times of cycling uses [180]. (c) UV-Vis diffuse reflectance spectra (a) and plots of () versus Wavelength (nm) (A) SnO₂, (B) SnO₂-ZnO, and (C) ZnO. (d) ln () as a function of the irradiation time for calcined SnO₂ (triangle), SnO₂-ZnO (square), and ZnO (circle) photocatalysts [182]. (e) Photodegradation of MO by the as-synthesized samples: (A) SnO₂, (B) ZnO, and (C) SnO₂/ZnO nanocatalyst. The commercial TiO₂ (Degussa P25) is used as a photocatalytic reference [183].

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