Fabrication and photoelectrochemical properties of La5Ti2MS5O7 (M=Ag, Cu) electrodes

Photoelectrocatalytic Materials for Solar Water Splitting

“…p‐type doping La 5 Ti 2 MS 5 O 7 with Sc 3+ , Ga 3+ or Al 3+ in Ti 4+ sites can increase the majority carrier concentration of the semiconductor, which may contribute to the enhanced photoelectrocatalytic activity. 1% Sc‐doped La 5 Ti 2 CuS 5 O 7 presented an eightfold enhancement in the photocurrent density . In the case of Ga‐doped La 5 Ti 2 CuS 5 O 7 , the band edge shifted to upward chemical potential for about 0.35 eV, resulting in a stronger photocathodic response .…”

Improving the photoelectrochemical activity of La5Ti2CuS5O7 for hydrogen evolution by particle transfer and doping

“…La 5 Ti 2 CuS 5 O 7 is an oxysulphide p-type semiconductor that exhibits photocatalytic activity for both water reduction and oxidation under visible light irradiation in the presence of sacricial reagents. 23,24 In addition, La 5 Ti 2 CuS 5 O 7 photoelectrodes prepared by pulsed laser deposition (PLD) and subsequent annealing under H 2 S ow generated a photocathodic current. However, the photocathodic response was rather weak, presumably because of the low crystallinity of the La 5 Ti 2 CuS 5 O 7 thin lm prepared by PLD.…”

Visible‐Light‐Driven Photocatalytic Z‐Scheme Overall Water Splitting in La5Ti2AgS5O7‐based Powder‐Suspension System

“…Upon varying the NiS amount for pre‐loaded 0.5 wt % Pt samples, the 1.0 wt % NiS‐loaded LTA exhibited maximal activity (Figure b). The hydrogen evolution over Pt (0.5 wt %)/NiS (1.0 wt %)‐LTA reached approximately 250 μmol h −1 , which is considerable in comparison to the other representative LTC‐ or LTA‐based photocatalysts under sacrificial reagents conditions (Figure c). Pt is the most effective cocatalyst for enhancing hydrogen evolution compared with Rh and Ru, either as an individually loaded noble metal or in the case of co‐loading M/NiS (M=Rh, Ru, Pt) (Figure d).…”