Photocatalytic oxidation of water on TiO2-coated WO3 particles by visible light using Iron(III) ions as electron acceptor

Plasmonic Titania Photocatalysts Active under UV and Visible-Light Irradiation: Influence of Gold Amount, Size, and Shape

“…The limitation in its application, resulting from low quantum yield (fast recombination of charge carriers: e − /h + ) and necessity to use UV irradiation, may be overcome since modified titania powders often possess higher level of activity and ability of working under visiblelight irradiation. A huge variety of organic [4][5][6][7] and inorganic compounds [8][9][10] have been examined as dopants or surface modifiers. Among them, noble-metals particles have attracted attention, since they may enhance the transfer of photogenerated electrons prolonging charge carriers lifetime [11][12][13][14][15][16].…”

Nanocatalysts for Water Splitting

“…When the surface of WO 3 was modified with a thin layer of TiO 2 nanoparticles, the photocatalytic activity of WO 3 was improved in the presence of Fe 2+ due to the suppression of the harmful effect of Fe 2+ by TiO 2 . 123 When AgNO 3 was used instead of Fe 3+ as the sacrificial reagent, much higher amount of O 2 could be produced, which was ascribed to the irreversible reduction of Ag + to Ag. 124 However, the deposition of Ag on WO 3 can block the absorption of incident light, leading to decreased photocatalytic activity with the reaction.…”

Photoelectrocatalytic activity of bi-layer TiO2/WO3 coatings for the degradation of 4-chlorophenol: effect of morphology and catalyst loading

“…For example, doping with lanthanide ions [12][13][14] or coupling with WO 3 [15][16][17][18][19][20][21][22][23][24][25] is known to suppress electron-hole recombination rates. On the other hand, introduction of a visible light active catalyst, such as WO 3 [15][16][17][18][26][27][28][29][30], improves visible light utilization. Hence, coupling TiO 2 with WO 3 is a strategy for achieving both targets.…”