Effect of Applied Potential on the Formation of Self-Organized TiO_𝟐 Nanotube Arrays and Its Photoelectrochemical Response

Figure 1

FESEM images of TiO₂ nanotube arrays fabricated at different applied potential in 1 M of glycerol electrolyte containing 0.5 wt% NH₄F for 30 minutes at (a) 10 V, (b) 20 V, (c) 30 V, (d) 40 V, and (e) 50 V. Insets are the cross-section morphology of the TiO₂ nanotube arrays.

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