Sol-Gel Synthesis of TiO₂/SiO₂ and ZnO/SiO₂ Composite Films and Evaluation of Their Photocatalytic Activity towards Methyl Green

Figure 3

SEM images of ZnO/SiO₂ composite film with scale bars of (a) 1 μm, (b) 0.5 μm, and (c) EDX spectrum of ZnO/SiO₂ composite film.

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(b)

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