Investigation of the Photocatalytic Activity of ZnO Nanowires: Substrate Effect and Kinetics Analysis
Figure 1
Top-view SEM images of ZnO NWs grown on ((a) and (c)) FTO (samples FTO-A and FTO-B, resp.), (d) sapphire, and ((e) and (f)) Si (samples Si-A and Si-B, resp.). (b) Cross-sectional SEM image of the FTO-A sample in (a). The insets reveal that the NW diameters range between 30 and 90 nm.
