fig2
Figure 2. Characterizations of the xAu/BiVO4 heterostructures. (A) XRD patterns; (B) UV-vis DRS test; (C) XPS full spectrum; (D) High-resolution XPS spectra of Bi 4f, V 2p, O 1s, Au 1s over 3Au/BiVO4. BiVO4: Bismuth vanadate; XRD: X-ray diffraction; UV-vis: ultraviolet-visible; DRS: diffuse reflectance spectroscopy; XPS: X-ray photoelectron spectroscopy.
