Efficient Visible Light Photocatalytic Oxidation of NO on F- and N-Codoped Spherical TiO₂ Synthesized via Ultrasonic Spray Pyrolysis

Figure 2

The morphology and structural characterization of FNT-5: (a) SEM image; (b) magnified SEM image; (c) TEM image; (d) HRTEM image.

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