The influence of the morphology of 1D TiO 2 nanostructures on photogeneration of reactive oxygen species and enhanced photocatalytic activity
Author
dc.contributor.author
Rosales, Maibelin
Author
dc.contributor.author
Zoltan, Tamara
Author
dc.contributor.author
Yadarola, Ciro
Author
dc.contributor.author
Mosquera, Edgar
Author
dc.contributor.author
Gracia, Francisco
Author
dc.contributor.author
García, Andreina
Admission date
dc.date.accessioned
2019-10-15T12:25:23Z
Available date
dc.date.available
2019-10-15T12:25:23Z
Publication date
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2019
Cita de ítem
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Journal of Molecular Liquids, Volumen 281,
Identifier
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01677322
Identifier
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10.1016/j.molliq.2019.02.070
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/171670
Abstract
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The influence of morphology in one-dimensional (1D) TiO 2 nanostructures—specifically nanotubes (TNT), nanofibers (TNF), nanorods (TNR), and nanowires (TNW)—on the photogeneration of reactive oxygen species (ROS) and the resulting effect on photocatalytic activity were investigated. 1D TiO 2 nanostructures were obtained by hydrothermal route, by employing changes in the crystalline phase of TiO 2 precursor and reaction temperature as the morphology-controlling factors. Morphological, structural, textural, and optical properties were studied using scanning and transmission electron microscopy, X-ray diffraction, BET surface area analysis, diffuse reflectance and photoluminescence spectroscopy. The photochemical behaviour of these 1D TiO 2 nanostructures was evaluated through ROS quantification including 1 O 2 and [rad]OH, and it was found that TNF exhibits the highest amount of generated ROS, the following tendency was observed: TNF > TNT > TNR > TNW. In addition, t