Evidence of upconversion luminescence contribution to the improved photoactivity of erbium doped TiO2 systems |
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Authors: | S Obregón G Colón |
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Institution: | Instituto de Ciencia de Materiales de Sevilla, Centro Mixto Universidad de Sevilla-CSIC.C/Américo Vespucio, 49, 41092 Sevilla, Spain. |
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Abstract: | Er(3+)-TiO(2) synthesized by a surfactant free hydrothermal method exhibits good photoactivities under sun-like excitation for the degradation of phenol. The presence of Er(3+) does not affect the structural and morphological features of the TiO(2) significantly. The best photocatalytic performance was attained for the samples with 2 wt% of Er. Different photocatalytic runs indicated that the incorporation of the Er(3+) cation would be responsible for the enhanced photocatalytic activity, which participates in different mechanisms under UV and NIR excitation. |
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