Photochemical behavior of rhodamine 6G dye intercalated in photocatalytically active layered hexaniobate

Monitoring catalytic degradation of dye molecules on silver-coated ZnO nanowire arrays by surface-enhanced Raman spectroscopy

“…In previous photocatalytic investigations of R6G, the disappearance of the maximum absorption band of R6G with the increase of reaction time is attributed to the decomposition of the conjugated xanthene ring of R6G, and the blue-shift of the absorption peak was assigned to the formation of N-de-ethylated intermediates in the degradation process. [29][30][31] In this case, the absorption band for R6G at 527 nm decreased without any change in its shape and position during all the reaction process. Therefore, it is reasonable to conclude that the conjugated xanthene ring is destroyed without the formation of de-ethylated intermediates during the reduction process.…”

Excellent photocatalytic degradation activities of ordered mesoporous anatase TiO2–SiO2 nanocomposites to various organic contaminants

“…In contrast, there are no demethylation on both BG and BF [57]. Rh6G experiences an N-de-ethylation during the rupture of chromophore structure [58][59][60].…”

Adsorptive and Photocatalytic Removal of Phenol by Layered Niobates Organically Modified Through Intercalation and Silylation

“…Although the reason why the C 12 N and C 18 Si species resist photocatalysis of the niobate layers is unclear, suppression of the photocatalytic decomposition by intercalation into hexaniobate has also been reported for a rhodamine dye. 52 The structural durability of the organically modified niobates would be related to their photocatalytic behavior. C 12 N-Nb 6 O 17 shows superior activity for the photodecomposition of phenol compared with C 18 Si-Nb 6 O 17 in a 10 mmol L −1 phenol solution.…”