{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,22]],"date-time":"2026-03-22T09:29:56Z","timestamp":1774171796550,"version":"3.50.1"},"reference-count":75,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2019,11,24]],"date-time":"2019-11-24T00:00:00Z","timestamp":1574553600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Pure TiO2 and Fe- and Co-doped TiO2 nanoparticles (NPs) as photocatalysts were synthesized using wet chemical methods (sol-gel + precipitation). Their crystalline structure and optical properties were analyzed using X-ray diffraction (XRD), Raman spectroscopy and Fourier-transform infrared (FTIR) spectroscopy, ultraviolet-visible light (UV-Vis) diffuse reflectance spectroscopy (DRS), and photoluminescence (PL) spectroscopy. The photocatalytic activity of the synthesized nanoparticles was evaluated through degradation of carbamazepine (CBZ) under UV-A and visible-light irradiations. The XRD and Raman analyses revealed that all synthesized nanomaterials showed only the anatase phase. The DRS results showed that the absorption edge was blue-shifted for Fe-doped TiO2 NPs. The decrease in charge recombination was evidenced from the PL investigation for both Co-doped and Fe-doped TiO2 nanomaterials. An enhancement in photocatalytic degradation of carbamazepine in aqueous suspension under both UV-A light and visible-light irradiations was observed for Fe-doped Titania NPs by comparison with pure TiO2. These results suggest that the doping cations could suppress the electron\/hole recombination. Therefore, the photocatalytic activity of TiO2-based nanomaterials was enhanced.<\/jats:p>","DOI":"10.3390\/ma12233874","type":"journal-article","created":{"date-parts":[[2019,11,25]],"date-time":"2019-11-25T03:10:00Z","timestamp":1574651400000},"page":"3874","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":127,"title":["Synthesis of Fe- and Co-Doped TiO2 with Improved Photocatalytic Activity Under Visible Irradiation Toward Carbamazepine Degradation"],"prefix":"10.3390","volume":"12","author":[{"given":"Abderrahim","family":"El Mragui","sequence":"first","affiliation":[{"name":"Chemistry Research Unit (CIQUP), Faculty of Sciences of University of Porto, Rua do Campo Alegre 697, 4169-007 Porto, Portugal"},{"name":"Research team \u201cMaterials and Applied Catalysis: MCA\u201d, \u201cCBAE\u201d Laboratory, Faculty of Sciences, Moulay Ismail University, BP.11201 Zitoune, Mekn\u00e8s, Morocco"}]},{"given":"Yuliya","family":"Logvina","sequence":"additional","affiliation":[{"name":"Chemistry Research Unit (CIQUP), Faculty of Sciences of University of Porto, Rua do Campo Alegre 697, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5647-8455","authenticated-orcid":false,"given":"Lu\u00eds","family":"Pinto da Silva","sequence":"additional","affiliation":[{"name":"Chemistry Research Unit (CIQUP), Faculty of Sciences of University of Porto, Rua do Campo Alegre 697, 4169-007 Porto, Portugal"},{"name":"LACOMEPHI, GreenUPorto, Department of Geosciences, Environment and Territorial Planning, Faculty of Sciences, University of Porto, Rua do Campo Alegre 697, 4169-007 Porto, Portugal"}]},{"given":"Omar","family":"Zegaoui","sequence":"additional","affiliation":[{"name":"Research team \u201cMaterials and Applied Catalysis: MCA\u201d, \u201cCBAE\u201d Laboratory, Faculty of Sciences, Moulay Ismail University, BP.11201 Zitoune, Mekn\u00e8s, Morocco"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8478-3441","authenticated-orcid":false,"given":"Joaquim C.G.","family":"Esteves da Silva","sequence":"additional","affiliation":[{"name":"Chemistry Research Unit (CIQUP), Faculty of Sciences of University of Porto, Rua do Campo Alegre 697, 4169-007 Porto, Portugal"},{"name":"LACOMEPHI, GreenUPorto, Department of Geosciences, Environment and Territorial Planning, Faculty of Sciences, University of Porto, Rua do Campo Alegre 697, 4169-007 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2019,11,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"263","DOI":"10.1016\/j.scitotenv.2014.03.089","article-title":"Photocatalytic degradation of carbamazepine in wastewater by using a new class of whey-stabilized nanocrystalline TiO2 and ZnO","volume":"485\u2013486","author":"Mohapatra","year":"2014","journal-title":"Sci. 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