Catalytic Activity of ZrO<sub>2</sub> Nanotube Arrays Prepared by Anodization
Method

<table>Influences of electrolyte concentration on catalytic activity: (a) (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>,  (b) NH<sub>4</sub>F.</table>

Journal of Nanomaterials

Figure 5: Catalytic Activity of ZrO<sub>2</sub> Nanotube Arrays Prepared by Anodization
Method 