Preparation of N-Doped TiO<sub>2</sub>-ZrO<sub>2</sub> Composite Films under Electric Field and Heat Treatment and Assessment of Their Removal of Methylene Blue from Solution

<table>XPS of the N1s in composite film treated at 500°C for 1 h: (a) 0 V, (b) 6000 V/cm (no NH<sub>4</sub>NO<sub>3</sub>) and (c) 6000 V/cm with addition of NH<sub>4</sub>NO<sub>3</sub>.</table>

Advances in Materials Science and Engineering

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Figure 4

Figure 4: Preparation of N-Doped TiO<sub>2</sub>-ZrO<sub>2</sub> Composite Films under Electric Field and Heat Treatment and Assessment of Their Removal of Methylene Blue from Solution 

Figure 4 | Preparation of N-Doped TiO2-ZrO2 Composite Films under Electric Field and Heat Treatment and Assessment of Their Removal of Methylene Blue from Solution 