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- W1970738583 abstract "TiO2 (P25) decorated reduced graphene oxide (rGO) is synthesized by γ-radiolytic technique using water-ethanol solvent medium. Visible light absorption was confirmed by UV–Visible spectroscopy. Photoluminescence (PL) study revealed a decline in electron-hole recombination rate signalled by a sharp fall in luminescence of TiO2. Under such scenario, electron transfer from TiO2 conduction band to the conjugated sheet becomes a preferred pathway in the presence of rGO, which is further confirmed by photocurrent measurement. TiO2 -rGO composite with 1 wt. % rGO was found to be the best composition in terms of visible light absorption, while retaining TiO2 crystallinity. Transmission electron microscopy and Raman spectroscopic studies confirmed the coating of rGO sheet with TiO2 nanoparticles. TiO2 -rGO was found to show about 150 times higher photocatalytic H2 generation under 250 W UV–Visible light irradiation than pristine TiO2. In addition to this, TiO2 -rGO composite shows hydrogen production yield of 35 μmol/h.g under visible light (λ = 400 nm) irradiation. Thus γ-radiolysis can be considered to be a viable technique, which helps in synthesizing photocatalytically active nanocomposite with high H2 evolution rate. In the light of these interesting aspects, a detail investigation is carried out to study the effect of rGO concentration and illumination time on photocatalytic yield." @default.
- W1970738583 created "2016-06-24" @default.
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- W1970738583 date "2015-05-01" @default.
- W1970738583 modified "2023-10-16" @default.
- W1970738583 title "Facile gamma radiolytic methodology for TiO2-rGO synthesis: Effect on photo-catalytic H2 evolution" @default.
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- W1970738583 doi "https://doi.org/10.1016/j.ijhydene.2015.02.102" @default.
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