TiO2 Nanostructures for Photoelectrocatalytic Degradation of Acetaminophen
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TiO2 Nanostructures for Photoelectrocatalytic Degradation of Acetaminophen

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TiO2 Nanostructures for Photoelectrocatalytic Degradation of Acetaminophen

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dc.contributor.author Borràs-Ferrís, Joan
dc.contributor.author Sánchez Tovar, Rita
dc.contributor.author Blasco-Tamarit, E.
dc.contributor.author Muñoz Portero, María José
dc.contributor.author Fernández Domene, Ramón Manuel
dc.contributor.author Garcia-Anton, Jose
dc.date.accessioned 2020-10-20T14:26:28Z
dc.date.available 2020-10-20T14:26:28Z
dc.date.issued 2019
dc.identifier.uri https://hdl.handle.net/10550/75963
dc.description.abstract Advanced oxidation processes driven by renewable energy sources are gaining attention in degrading organic pollutants in waste waters in an efficient and sustainable way. The present work is focused on a study of TiO2 nanotubes as photocatalysts for photoelectrocatalytic (PEC) degradation of acetaminophen (AMP) at different pH (3, 7, and 9). In particular, different TiO2 photocatalysts were synthetized by stirring the electrode at different Reynolds numbers (Res) during electrochemical anodization. The morphology of the photocatalysts and their crystalline structure were evaluated by field emission scanning electron microscopy (FESEM) and Raman confocal laser microscopy (RCLM). These analyses revealed that anatase TiO2 nanotubes were obtained after anodization. In addition, photocurrent densities versus potential curves were performed in order to characterize the electrochemical properties of the photocatalysts. These results showed that increasing the Re during anodization led to an enhancement in the obtained photocurrents, since under hydrodynamic conditions part of the initiation layer formed over the tubes was removed. PEC degradation of acetaminophen was followed by ultraviolet-visible absorbance measurements and chemical oxygen demand tests. As drug mineralization was the most important issue, total organic carbon measurements were also carried out. The statistical significance analysis established that acetaminophen PEC degradation improved as hydrodynamic conditions linearly increased in the studied range (Re from 0 to 600). Additionally, acetaminophen conversion had a quadratic behavior with respect to the reaction pH, where the maximum conversion value was reached at pH 3. However, in this case, the diversity of the byproducts increased due to a different PEC degradation mechanism.
dc.language.iso eng
dc.relation.ispartof Nanomaterials, 2019, vol. 9, num. 583
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Borràs-Ferrís, Joan Sánchez Tovar, Rita Blasco-Tamarit, E. Muñoz Portero, María José Fernández Domene, Ramón Manuel Garcia-Anton, Jose 2019 TiO2 Nanostructures for Photoelectrocatalytic Degradation of Acetaminophen Nanomaterials 9 583
dc.subject Nanoestructures
dc.subject Fotoelectricitat
dc.title TiO2 Nanostructures for Photoelectrocatalytic Degradation of Acetaminophen
dc.type info:eu-repo/semantics/article
dc.date.updated 2020-10-20T14:26:29Z
dc.identifier.doi https://doi.org/10.3390/nano9040583
dc.identifier.idgrec 138183

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