Thermally stable luminescent composites fabricated by confining rare earth complexes in the two-dimensional gallery of Titania nanosheets and their photophysical properties

Article Abstract:

Fluorescent composite materials of exfoliated titania nanosheets, [Ti.sub.0.91][O.sub.2] and rare earth (RE) complexes, Eu([phen.sub.2])[Cl.sub.3]*2[H.sub.2]O and Tb([phen.sub.2])[Cl.sub.3]*2[H.sub.2]O (phen = 1,10-phenanthroline), are synthesized via flocculation between them. The results show that the incorporation of a rare earth emissive complex into a layered inorganic host material is a useful strategy to improve its thermal stability and emission efficiency.

Rare Earth Compounds, Observations, Nanotechnology, Thermal properties, Thermoluminescence, Rare earth metal compounds

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Photocurrent generation from semiconducting manganese oxide nanosheets in response to visible light

Article Abstract:

Unilamellar nanosheet crystallites of manganese oxide generated the anodic photocurrent under visible light irradiation while the nanosheets themselves were stable and UV-visible absorption spectra. The monolayer film of MnO2 nanosheets exhibit the incident photon to electron conversion efficiency of 0.16% in response to the monochromatic light irradiation, which is comparable to those for sensitization of monolayers dyes adsorbed on a flat single-crystal surface.

Manganese Dioxide, Analysis, Irradiation, Irradiation (Radiation exposure)

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Photoinduced hydrophilic conversion properties of titania nanosheets

Article Abstract:

Photoinduced hydrophilic conversion properties of titania nanosheets were investigated. The hydrophilic conversion rate (k) for the monolayer film of titania nanosheets was proportional to the intensity (I) of irradiated light, suggesting that the hydrophilic conversion of titania nanosheet surface proceeded under light-limited conditions even with a high concentration of photoexcited carriers.

Titanium dioxide, Photolysis

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