Study on the photocatalytic activity of K2La2Ti3O10 doped with vanadium (V)

Synthesis and characterization of La2Ti2O7 employed for photocatalytic degradation of reactive red 22 dyestuff in aqueous solution

“…However, the rapid recombination of photogenerated electron-hole pairs critically limits the effectiveness of photocatalytic processes. Recently, several new perovskite structured photocatalysts with highly donor-doped layered structures have been found to be competent on photocatalytic applications, including water-splitting [1][2][3], Cr(VI) reduction [4], NO oxidation [5] and decomposition of organic compounds [6,7]. Perovskites contains a cubic structure with three different ions, as form of ABO 3 [8].…”

Preparation and photocatalytic activities of two new Zn-doped SrTiO3 and BaTiO3 photocatalysts for hydrogen production from water without cocatalysts loading

“…But they are approximate to those of the photocatalysts without cocatalysts loading, such as the recent reported photocatalysts of BaZr 1Àx Sn x O 3 (about 138 mmol h À1 for H 2 production) [37], (Ga 1Àx Zn x )(N 1Àx O x ) (about 300 mmol h À1 for H 2 production) [31] and Gd 2 Ti 2 O 7 /GdCrO 3 (about 200 mmol h À1 for H 2 production) [50]. So the present photocatalysts have potential application in hydrogen production.…”

“…Furthermore, compared with SrTiO 3 loaded with NiO x (70 mmol h À1 ), CoO x (23.2 mmol h À1 ), Os (55.4 mmol h À1 ), Pd (63.4 mmol h À1 ), Ir (71.4 mmol h À1 ) and so on [16,56,57], the H 2 evolution rate of 1 without cocatalyst loading is larger. This could be explained that the capture of the photo-generated electrons by the doped Zn ions reduced the recombination of the photogenerated electrons and holes [31]. The specific reason of the drastic improvement of its photocatalytic activity was also investigated by theoretical method in the following section.…”

Structural characterization and photocatalytic activity of NiO/AgNbO3

“…It is found that the La modified sample displays the highest photocatalytic activity, and it is more than 12-fold higher than that of AgNbO 3 [4]. Yang et al [5] indicate that compared to the pure K 2 La 2 Ti 3 O 10 , V-doped K 2 La 2 Ti 3 O 10 exhibits higher photocatalytic activity of hydrogen production. Liu et al [6] prepare the ZnO/titanate nanocomposites, and the literature indicates that the nanocomposites are found to show a surprisingly high photocatalytic activity under visible light irradiation.…”