Additive-free controllable fabrication of bismuth vanadates and their photocatalytic activity toward dye degradation

Zinc vanadate nanorods and their visible light photocatalytic activity

“…The MB degradation ratio is about 27.36% with the solar light irradiation time reaching 4 h. Therefore, the photocatalytic activities for the MB degradation are limited by solar light irradiation without any photocatalysts. The result is similar to that reported by Guo et al using bismuth vanadate as the photocatalysts for MB degradation [33]. The MB can be degraded totally under the solar light irradiation for 4 h. Therefore, the zinc vanadate nanorods have good photocatalytic activities for the degradation of MB under solar light.…”

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

“…Zhang et al [10] reported that different crystalline phases of BiVO 4 were selectively synthesized by aqueous processes, and the photocatalytic activity of tetragonal BiVO 4 with a band gap of 3.11 eV was negligible. Guo and co-workers [8] have fabricated BiVO 4 powders with various crystal structures and morphologies. The results showed that the crystal structure and morphology had a vital impact on their photocatalytic reactivity.…”

“…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].…”

Photocatalytic properties of KBiO3 and LiBiO3 with tunnel structures

“…10,11 Bismuthbased compounds such as BiVO 4 , Bi 2 WO 6 , Bi 2 MoO 6 , CaBi 2 O 4 , BiNbO 4 and BiTaO 4 have been reported as new photocatalytic materials. [12][13][14][15][16][17][18][19][20] Many Bi +3 containing oxides exhibit photocatalytic properties due to the hybridized O(2p) and Bi (6s) valence bands. Recently, BaBiO 3 a perovskite oxide, where Bi present in +3 and +5 mixed oxidation states, has been shown to be an active visible-light-driven photocatalyst.…”