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Silver and manganese co-doped titanium oxide aerogel for effective diclofenac degradation under UV-A light irradiation
dc.contributor.author | Tbessi, Imen |
dc.contributor.author | Benito Vélez, Mónica |
dc.contributor.author | Llorca Piqué, Jordi |
dc.contributor.author | Molins, Elies |
dc.contributor.author | Sayadi, Sami |
dc.contributor.author | Najjar, Wahiba |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química |
dc.date.accessioned | 2018-12-14T13:02:33Z |
dc.date.available | 2023-03-30T00:27:41Z |
dc.date.issued | 2019-03-30 |
dc.identifier.citation | Tbessi, I., Benito, M., Llorca, J., Molins, E., Sayadi, S., Najjar, W. Silver and manganese co-doped titanium oxide aerogel for effective diclofenac degradation under UV-A light irradiation. "Journal of alloys and compounds", 30 Març 2019, vol. 779, p. 314-325. |
dc.identifier.issn | 0925-8388 |
dc.identifier.uri | http://hdl.handle.net/2117/125814 |
dc.description.abstract | The photodegradation of diclofenac from aqueous medium under UV-A light condition has been essayed using co-doped with manganese and silver TiO2 photocatalysts. X-ray diffraction, Raman spectroscopy, Scanning electron microscopy, Transmission electron microscopy, High resolution transmission electron microscopy, Energy dispersive X-ray, N2 adsorption-desorption measurements at 77¿K, UV–Visible diffuse reflectance, X-ray photoelectron spectroscopy and photoluminescence analyses were used to characterize the materials. A high surface specific area of 165¿m2/g, low band gap energy (2.7¿eV) and effective charge separation were obtained for the 0.5%Ag-0.6%Mn/TiO2 photocatalyst. The results of the photocatalytic experiments showed that co-doping improved the photocatalytic activity of TiO2. In particular, TiO2 co-doped with 0.6¿mol% Mn and 0.5¿mol% Ag exhibited the maximum diclofenac removal (86%) after 4¿h under UV-A light irradiation. The photodegradation rates followed a first order kinetics according to the Langmuir-Hinshelwood model, being the highest apparent rate of 0.0064 min-1. The photocatalytic performance appears as related to the specific surface area, the low optical band gap energy, the creation of surface oxygen vacancies and the efficient separation of photogenerated electron-hole pairs. |
dc.format.extent | 12 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria química |
dc.subject.lcsh | Photodegradation |
dc.subject.lcsh | Raman spectroscopy |
dc.subject.other | Heterogeneous photocatalysis |
dc.subject.other | Mn and Ag co-doped TiO2 |
dc.subject.other | Photodegradation |
dc.subject.other | Diclofenac |
dc.title | Silver and manganese co-doped titanium oxide aerogel for effective diclofenac degradation under UV-A light irradiation |
dc.type | Article |
dc.subject.lemac | Fotocatàlisi |
dc.subject.lemac | Espectroscòpia Raman |
dc.contributor.group | Universitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia |
dc.identifier.doi | 10.1016/j.jallcom.2018.11.083 |
dc.description.peerreviewed | Peer Reviewed |
dc.rights.access | Open Access |
local.identifier.drac | 23542537 |
dc.description.version | Postprint (author's final draft) |
local.citation.author | Tbessi, I.; Benito, M.; Llorca, J.; Molins, E.; Sayadi, S.; Najjar, W. |
local.citation.publicationName | Journal of alloys and compounds |
local.citation.volume | 779 |
local.citation.startingPage | 314 |
local.citation.endingPage | 325 |
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