Intercalation of iron oxide in layered H2Ti4O9 and H4Nb6O17: visible-light induced photocatalytic properties
- 1 January 1996
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions
- Vol. 92 (24) , 5089-5092
- https://doi.org/10.1039/ft9969205089
Abstract
H2Ti4O9/Fe2O3·nH2O and H4Nb6O17/Fe2O3·nH2O nanocomposites containing intercalated Fe2O3·nH2O, particles of 3(CH3CO2)7(OH)· H2O)]+ incorporated in the inter-layer of H2Ti4O9 and H4Nb6O17. Both nanocomposites were capable of hydrogen evolution to the extent of 8.1–8.7 cm3 over 5 h, following irradiation with visible light (λ > 400 nm) from a 450 W Hg lamp in the presence of Na2SO3 as a sacrificial donor. The hydrogen production activity of these nanocomposites was superior to that of unsupported Fe2O3·nH2O. The hydrogen production was enhanced to 11.3–13.6 cm3 over 5 h by doping Pt together with Fe2O3·nH2O in the interlayer. Hydrogen evolution was linear with time with the niobate system being slightly more efficient.Keywords
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