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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.citation	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.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.subject	Nanoestructures
dc.subject	Fotoelectricitat
dc.title	TiO2 Nanostructures for Photoelectrocatalytic Degradation of Acetaminophen
dc.type	journal article	es_ES
dc.date.updated	2020-10-20T14:26:29Z
dc.identifier.doi	10.3390/nano9040583
dc.identifier.idgrec	138183
dc.rights.accessRights	open access	es_ES