One-dimensional spindle-like BiVO4/TiO2 nanofibers heterojunction nanocomposites with enhanced visible light photocatalytic activity

Bismuth vanadate-based semiconductor photocatalysts: a short critical review on the efficiency and the mechanism of photodegradation of organic pollutants

“…By this mean, hydroxyl radicals can be identified using iso-propanol or tert-butanol; superoxide radicals can be highlighted by using p-benzoquinone while photogenerated hole can be directly scavenged by ammonium oxalate or EDTA (ethylene-diamine-tetra-acetate). Another technique to identify oxidative species involved in photocatalytic mechanism is to make assumptions based on theoretical calculation of photocatalyst band structure, but such a method is not viable (Guo et al 2016;Lamdab et al 2016).…”

“…Another interesting composite is BiVO 4 /TiO 2 , which is also a type II semiconductor heterojunction with similar electronic band configuration to BiVO 4 /WO 3 . However, one could say that the E g of TiO 2 should energetically encompass the E g of BiVO 4 to form a type I heterojunction since CBM of TiO 2 and BiVO 4 is -0.2 V and 0 V, respectively, while VBM is at 3.0 V and 2.4 V for TiO 2 and BiVO 4 , respectively (Guo et al 2016;Hu et al 2011;. But this is only valid for the single components (Guo et al 2016;Hu et al 2011;Sun et al 2015).…”

“…However, one could say that the E g of TiO 2 should energetically encompass the E g of BiVO 4 to form a type I heterojunction since CBM of TiO 2 and BiVO 4 is -0.2 V and 0 V, respectively, while VBM is at 3.0 V and 2.4 V for TiO 2 and BiVO 4 , respectively (Guo et al 2016;Hu et al 2011;. But this is only valid for the single components (Guo et al 2016;Hu et al 2011;Sun et al 2015). Indeed, in the heterojunction, the energy band gap position of BiVO 4 and TiO 2 is shifted by homogenisation of their Fermi levels (Guo et al 2016;Hu et al 2011;Sun et al 2015).…”

Preparation of BiVO4/MIL‐125(Ti) composite with enhanced visible‐light photocatalytic activity for dye degradation

“…Zhang et al . fabricated BiVO 4 /TiO 2 heterostructure by microwave hydrothermal method and Guo et al . employed a sol‐gel method to synthesize one‐dimensional spindle‐like BiVO 4 /TiO 2 hybrids.…”

Preparation of nanoporous BiVO 4 /TiO 2 /Ti film through electrodeposition for photoelectrochemical water splitting

“…One is doping modification, such as doped metal [9], non-metal [10] and semiconductor [11]. The second method is morphology modification by changing the crystal structure, morphology and specific surface area of BiVO 4 [12,13].…”