Visible-light sensitive cobalt-doped BiVO4 (Co-BiVO4) photocatalytic composites for the degradation of methylene blue dye in dilute aqueous solutions

Spatial separation of photogenerated electrons and holes among {010} and {110} crystal facets of BiVO4

“…S7) even though the precursors with distinct anions, such as Cl À , SO 4 2 À and NO 3 À and so on, are applied. On the other hand, the isoelectric point of BiVO 4 was measured to be about 3.5, close to the values reported in the literature 49,50 , which is slightly lower than the pH values of the photo-deposition solutions (Supplementary Table S1), indicating that the surfaces of BiVO 4 are negatively charged during the photo-deposition. As a consequence, the adsorption of AuCl 4 À or PtCl 6 2 À anions on the surface of BiVO 4 should be less favourable than that of Ag þ , Pb 2 þ or Mn 2 þ cations in consideration of adsorption competition of ions with the same charge.…”

Microwave-hydrothermal synthesis of Co-doped FeS2 as a visible-light photocatalyst

“…Doping with metal ions such as Co ion is an efficient way to improve the photocatalytic performance of the photocatalysts. For example, Zhou et al [22] synthesized Co-doped BiVO 4 photocatalyst through a heteronuclear complexing method, its photocatalytic performance was greatly enhanced after Co 2? doping.…”

Structural transformation of Sm3+ doped BiVO4 with high photocatalytic activity under simulated sun-light

“…BiVO 4 possesses three crystal structures: monoclinic scheelite structure (ms-BiVO 4 ), tetragonal scheelite structure (ts-BiVO 4 ) and tetragonal zircon structure (tz-BiVO 4 ) [5]. The ms-BiVO 4 exhibits the best photocatalytic activity under visible light irradiation owing to the relatively narrow band gap (2.4 eV), while the tz-BiVO 4 with a 2.9 eV band gap mainly responds to the UV-light irradiation [6][7][8]. Therefore, the band configuration of different phases plays an important role in their photocatalytic performance [9].…”