Synthesis of niobia nanocrystals with controlled morphology |
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Authors: | Leite Edson R Vila Cristiane Bettini Jefferson Longo Elson |
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Institution: | Department of Chemistry, Federal University of S?o Carlos, 13565-905 S?o Carlos, SP, Brazil. derl@power.ufscar.br |
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Abstract: | In this work, TT niobia-phase nanocrystals with controlled morphology were obtained by the hydrothermal treatment of a niobium peroxo complex precursor at very low temperatures. The materials obtained by this route presented a very high surface area (ranging from 79 to 327 m(2)/g), disordered NbO(6), NbO(7), and NbO(8) polyhedra, Nb-O superficial sites, and a superficial OH group, which must have ensured the acidic characteristics of this oxide. |
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