Research Article

Fabrication of Bi-Doped TiO2 Spheres with Ultrasonic Spray Pyrolysis and Investigation of Their Visible-Light Photocatalytic Properties

Figure 2

Representative structural characterizations and general morphologies of Bi-doped TiO2 with 2% of Bi (a) SEM image, (b) and (c) TEM images, (d) HRTEM image, (e) SAED pattern, and (f) Energy-dispersive X-ray analysis spectra.
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