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- W2010577962 abstract "TiO2 nanocrystalline powders with various Mn-doping levels were synthesized by the sol–gel process using tetrabutyl titanate and manganese nitrate as precursors. The crystal structure, morphology, doping concentration, optical absorption property, and elemental state of the obtained samples were analyzed. TEM results showed that the synthesized TiO2 powders were anatase nanoparticles about 7 nm in size. EDX and XPS analyses proved the incorporation of Mn ions into the TiO2 lattice. A remarkable red shift of the absorption edge was achievable by increased Mn content, leading to gigantically narrowed energy gap to permit absorption well into the infrared spectral region. The dramatic optical absorbance of the doped TiO2 nanopowders in the visible spectral region led to strong photocatalytic activity under visible light illumination, which was observed by measuring the degradation of methylene blue. In contrast, little degradation was observed for the pure TiO2 powder. The optimum Mn/Ti ratio was observed to be 0.2 at.% for photocatalytic applications." @default.
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- W2010577962 date "2011-07-01" @default.
- W2010577962 modified "2023-10-17" @default.
- W2010577962 title "Mn-doped TiO2 nanopowders with remarkable visible light photocatalytic activity" @default.
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- W2010577962 doi "https://doi.org/10.1016/j.matlet.2011.04.010" @default.
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