Figures & data
Figure 1. XRD pattern of the resultant products.
Figure 2. SEM images of (a) Bi2O4 (b) S4 (c) S3 (d) S2 (e) S1 (f) Bi2WO6.
Figure 3. Surface scan image of S3 (a) Surface scan image (b) O element (c) W element (d) Bi element.
Figure 4. TEM image of S3.
Figure 5. XPS spectra of Bi2O4, Bi2WO6 and S3 : survey(a), Bi4f(b), W5f(c), O1s(d).
Figure 6. UV-visible diffuse reflectance spectra of samples.
Figure 7. Photodegradation of MO.
Figure 8. Cycling runs for the photocatalytic degradation MO over (a) Bi2O4 and（b）S3.
Figure 9. (A) PL spectra of S3, Bi2O4 and Bi2WO6 samples, (b) transient photocurrent responses of as-prepared samples.
Figure 10. Degradation rate of MO in the presence of various radicals scavengers.
Figure 11. Valence-band XPS spectra of the Bi2O4 and Bi2WO6.
Figure 12. Schematic illustration of the mechanism for the high photocatalytic performance of Bi2O4/Bi2WO6 composite.
