Sprayed Pyrolyzed ZnO Films with Nanoflake and Nanorod Morphologies and Their Photocatalytic Activity

Figure 3

SEM images of ZnO films of Set 2, where the effect of the solvent is observed. The water/methanol ratio decreases to the right, that is, 100/0 (a, f), 75/25 (b, g), 50/50 (c, h), 25/75 (d, i), and 0/100 (e, j).

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