One-Pot Template-Free Hydrothermal Synthesis of Monoclinic BiVO₄ Hollow Microspheres and Their Enhanced Visible-Light Photocatalytic Activity

Figure 8

PL spectral changes observed during illumination of (a) as-prepared BiVO₄ and (b) TiO₂ sample in a 5×10⁻⁴ M basic solution of terephthalic acid (excitation at 315 nm). Each fluorescence spectrum was recorded every 30 min of visible light illumination.

(a)

(b)