A study of the photocatalytic activity of titanium dioxide nanopowders

Growth of nano Ag@AgCl on (111) facets of Cu2O microcrystals with an enhanced photocatalytic activity

“…39 Another possible reason is the restoring of the initial disparity of the catalyst particles upon repeated use. 40 These results indicate that Ag@AgCl/Cu 2 O is stable and can be reused. The incorporation of Ag@AgCl on the surface of Cu 2 O can improve the visible light photocatalytic performance of Cu 2 O and inhibit the photocorrosion, resulting in a long stable durability of photocatalytic activity.…”

Plasmon-enhanced photocatalytic properties of nano Ag@AgBr on single-crystalline octahedral Cu2O (1 1 1) microcrystals composite photocatalyst

“…There is an expected decrease in photocatalytic activity from 93% to 79% upon 5th use. The decrease in activity could be assigned to either washout loss of some catalyst during the recovery steps or due to deposition of reaction products at the catalyst surface [41], another reason is the impossibility of restoring the initial dispersity of the particles of the catalyst on repeated use [42]. Therefore, the acceptable activity in repeated uses indicated the excellent stability of Ag@AgBr(15 wt.%)/Cu 2 O catalyst, the results obtained illustrate that the incorporation of Ag@AgBr on the surface of Cu 2 O not only enhances the visible light photocatalytic performance of Cu 2 O, but also inhibits the photocorrosion, thus giving rise to a stable durability of photocatalytic activity [43].…”