UV/Vis light induced degradation of oxytetracycline hydrochloride mediated by Co-TiO2 nanoparticles

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dc.identifier.uri http://dx.doi.org/10.15488/9902
dc.identifier.uri https://www.repo.uni-hannover.de/handle/123456789/9960
dc.contributor.author Akel, Soukaina
dc.contributor.author Boughaled, Redouan
dc.contributor.author Dillert, Ralf
dc.contributor.author Azzouzi, Mohamed El
dc.contributor.author Bahnemann, Detlef W.
dc.date.accessioned 2020-06-29T15:21:48Z
dc.date.available 2020-06-29T15:21:48Z
dc.date.issued 2020
dc.identifier.citation Akel, S.; Boughaled, R.; Dillert, R.; Azzouzi, M.E.; Bahnemann, D.W.: UV/Vis light induced degradation of oxytetracycline hydrochloride mediated by Co-TiO2 nanoparticles. In: Molecules 25 (2020), Nr. 2, 249. DOI: https://doi.org/10.3390/molecules25020249
dc.description.abstract Pharmaceuticals, especially antibiotics, constitute an important group of aquatic contaminants given their environmental impact. Specifically, tetracycline antibiotics (TCs) are produced in great amounts for the treatment of bacterial infections in both human and veterinary medicine. Several studies have shown that, among all antibiotics, oxytetracycline hydrochloride (OTC HCl) is one of the most frequently detected TCs in soil and surface water. The results of the photocatalytic degradation of OTC HCL in aqueous suspensions (30 mg·L−1) of 0.5 wt.% cobalt-doped TiO2 catalysts are reported in this study. The heterogeneous Co-TiO2 photocatalysts were synthesized by two different solvothermal methods. Evonik Degussa Aevoxide P25 and self-prepared TiO2 modified by the same methods were used for comparison. The synthesized photocatalysts were characterized by X-ray powder diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM), UV/vis diffuse reflectance spectroscopy (DRS), and N2 adsorption (BET) for specific surface area determination. The XRD and Raman results suggest that Ti4+ was substituted by Co2+ in the TiO2 crystal structure. Uv/visible spectroscopy of Co-TiO2-R showed a substantial redshift in comparison with bare TiO2-R. The photocatalytic performance of the prepared photocatalysts in OTC HCL degradation was investigated employing Uv/vis spectroscopy and high-performance liquid chromatography (HPLC). The observed initial reaction rate over Co-TiO2-R was higher compared with that of Co-TiO2-HT, self-prepared TiO2, and the commercial P25. The enhanced photocatalytic activity was attributed to the high surface area (153 m2·g−1) along with the impurity levels within the band gap (2.93 eV), promoting the charge separation and improving the charge transfer ability. From these experimental results, it can be concluded that Co-doping under reflux demonstrates better photocatalytic performances than with the hydrothermal treatment.
dc.language.iso eng
dc.publisher Basel : MDPI AG
dc.relation.ispartofseries Molecules 25 (2020), Nr. 2
dc.relation.uri https://doi.org/10.3390/molecules25020249
dc.rights CC BY 4.0 Unported
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject Co-TiO2 catalyst eng
dc.subject Oxytetracycline hydrochloride eng
dc.subject Photocatalysis eng
dc.subject Solvothermal synthesis eng
dc.subject Water treatment eng
dc.subject antiinfective agent eng
dc.subject cobalt eng
dc.subject nanoparticle eng
dc.subject oxytetracycline eng
dc.subject titanium eng
dc.subject titanium dioxide eng
dc.subject catalysis eng
dc.subject chemistry eng
dc.subject devices eng
dc.subject light eng
dc.subject oxidation reduction reaction eng
dc.subject procedures eng
dc.subject Raman spectrometry eng
dc.subject transmission electron microscopy eng
dc.subject ultrastructure eng
dc.subject ultraviolet radiation eng
dc.subject water management eng
dc.subject water pollutant eng
dc.subject X ray diffraction eng
dc.subject Anti-Bacterial Agents eng
dc.subject Catalysis eng
dc.subject Cobalt eng
dc.subject Light eng
dc.subject Microscopy, Electron, Transmission eng
dc.subject Nanoparticles eng
dc.subject Oxidation-Reduction eng
dc.subject Oxytetracycline eng
dc.subject Spectrum Analysis, Raman eng
dc.subject Titanium eng
dc.subject Ultraviolet Rays eng
dc.subject Water Pollutants, Chemical eng
dc.subject Water Purification eng
dc.subject X-Ray Diffraction eng
dc.subject.ddc 540 | Chemie ger
dc.title UV/Vis light induced degradation of oxytetracycline hydrochloride mediated by Co-TiO2 nanoparticles
dc.type article
dc.type Text
dc.relation.issn 1420-3049
dc.bibliographicCitation.issue 2
dc.bibliographicCitation.volume 25
dc.bibliographicCitation.firstPage 249
tib.accessRights frei zug�nglich

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