Synthesis of Fe- and Co-Doped TiO2 with Improved Photocatalytic Activity Under Visible Irradiation Toward Carbamazepine Degradation
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) sp...
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| Veröffentlicht in: | Materials 2019-11, Vol.12 (23), p.3874 |
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| creator | El Mragui, Abderrahim Logvina, Yuliya Pinto da Silva, Luís Zegaoui, Omar Esteves da Silva, Joaquim C.G. |
| description | 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. |
| doi_str_mv | 10.3390/ma12233874 |
| format | Article |
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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.</description><identifier>ISSN: 1996-1944</identifier><identifier>EISSN: 1996-1944</identifier><identifier>DOI: 10.3390/ma12233874</identifier><identifier>PMID: 31771256</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Anatase ; Aqueous solutions ; Catalytic activity ; Chemical precipitation ; Chemical synthesis ; Cobalt ; Fourier transforms ; Infrared analysis ; Infrared spectroscopy ; Iron ; Light ; Nanomaterials ; Nanoparticles ; Nitrates ; Optical properties ; Photocatalysis ; Photodegradation ; Photoluminescence ; Pollutants ; Raman spectroscopy ; Sol-gel processes ; Spectrum analysis ; Titanium dioxide ; Ultraviolet radiation ; Water treatment ; X-ray diffraction</subject><ispartof>Materials, 2019-11, Vol.12 (23), p.3874</ispartof><rights>2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). 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These results suggest that the doping cations could suppress the electron/hole recombination. Therefore, the photocatalytic activity of TiO2-based nanomaterials was enhanced.</description><subject>Anatase</subject><subject>Aqueous solutions</subject><subject>Catalytic activity</subject><subject>Chemical precipitation</subject><subject>Chemical synthesis</subject><subject>Cobalt</subject><subject>Fourier transforms</subject><subject>Infrared analysis</subject><subject>Infrared spectroscopy</subject><subject>Iron</subject><subject>Light</subject><subject>Nanomaterials</subject><subject>Nanoparticles</subject><subject>Nitrates</subject><subject>Optical properties</subject><subject>Photocatalysis</subject><subject>Photodegradation</subject><subject>Photoluminescence</subject><subject>Pollutants</subject><subject>Raman spectroscopy</subject><subject>Sol-gel processes</subject><subject>Spectrum analysis</subject><subject>Titanium dioxide</subject><subject>Ultraviolet radiation</subject><subject>Water treatment</subject><subject>X-ray diffraction</subject><issn>1996-1944</issn><issn>1996-1944</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpdkU1r3DAQhkVpaUKaS3-BoJdScGp92dKlEDZNuhBIoJtehSyNswq25EraDdtr_ni8TehH5jLDzMPLvLwIvSf1CWOq_jwaQiljsuWv0CFRqqmI4vz1P_MBOs75rp6LMSKpeosOGGlbQkVziB6-70JZQ_YZxx6fQ4VNcHgRq7M4gcMrf0XxvS9rvBynFLfz6nodS7SmmGFXvMWntvitLzt8Exwk_MNn3w2AlykZ503xMeBVvDdpFjWpM6P5BZMPgM_gdiZ-A-_Qm94MGY6f-xG6Of-6WnyrLq8ulovTy8oyyUoluOPzJIAZAFlDQ6VyVADpJVO86-jenHTgVK-Ua3lvOIBVNaWWQk8cO0JfnnSnTTeCsxBKMoOekh9N2ulovP7_Evxa38atbhRthBKzwMdngRR_biAXPfpsYRhMgLjJmjKiiBKCNjP64QV6FzcpzPY0FVw2krJ2T316omyKOSfo_zxDar2PV_-Nlz0CoG6X5Q</recordid><startdate>20191124</startdate><enddate>20191124</enddate><creator>El Mragui, Abderrahim</creator><creator>Logvina, Yuliya</creator><creator>Pinto da Silva, Luís</creator><creator>Zegaoui, Omar</creator><creator>Esteves da Silva, Joaquim C.G.</creator><general>MDPI AG</general><general>MDPI</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0002-5647-8455</orcidid><orcidid>https://orcid.org/0000-0001-8478-3441</orcidid></search><sort><creationdate>20191124</creationdate><title>Synthesis of Fe- and Co-Doped TiO2 with Improved Photocatalytic Activity Under Visible Irradiation Toward Carbamazepine Degradation</title><author>El Mragui, Abderrahim ; Logvina, Yuliya ; Pinto da Silva, Luís ; Zegaoui, Omar ; Esteves da Silva, Joaquim C.G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c383t-54d4c385e3aee80e6289d25e1f8394bb218298ded9f99d74fa4eec9022c2ef1d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Anatase</topic><topic>Aqueous solutions</topic><topic>Catalytic activity</topic><topic>Chemical precipitation</topic><topic>Chemical synthesis</topic><topic>Cobalt</topic><topic>Fourier transforms</topic><topic>Infrared analysis</topic><topic>Infrared spectroscopy</topic><topic>Iron</topic><topic>Light</topic><topic>Nanomaterials</topic><topic>Nanoparticles</topic><topic>Nitrates</topic><topic>Optical properties</topic><topic>Photocatalysis</topic><topic>Photodegradation</topic><topic>Photoluminescence</topic><topic>Pollutants</topic><topic>Raman spectroscopy</topic><topic>Sol-gel processes</topic><topic>Spectrum analysis</topic><topic>Titanium dioxide</topic><topic>Ultraviolet radiation</topic><topic>Water treatment</topic><topic>X-ray diffraction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>El Mragui, Abderrahim</creatorcontrib><creatorcontrib>Logvina, Yuliya</creatorcontrib><creatorcontrib>Pinto da Silva, Luís</creatorcontrib><creatorcontrib>Zegaoui, Omar</creatorcontrib><creatorcontrib>Esteves da Silva, Joaquim C.G.</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>Materials Science Database</collection><collection>Materials Science Collection</collection><collection>Access via ProQuest (Open Access)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>El Mragui, Abderrahim</au><au>Logvina, Yuliya</au><au>Pinto da Silva, Luís</au><au>Zegaoui, Omar</au><au>Esteves da Silva, Joaquim C.G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Synthesis of Fe- and Co-Doped TiO2 with Improved Photocatalytic Activity Under Visible Irradiation Toward Carbamazepine Degradation</atitle><jtitle>Materials</jtitle><date>2019-11-24</date><risdate>2019</risdate><volume>12</volume><issue>23</issue><spage>3874</spage><pages>3874-</pages><issn>1996-1944</issn><eissn>1996-1944</eissn><abstract>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.</abstract><cop>Basel</cop><pub>MDPI AG</pub><pmid>31771256</pmid><doi>10.3390/ma12233874</doi><orcidid>https://orcid.org/0000-0002-5647-8455</orcidid><orcidid>https://orcid.org/0000-0001-8478-3441</orcidid><oa>free_for_read</oa></addata></record> |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central Open Access; MDPI - Multidisciplinary Digital Publishing Institute; PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Anatase Aqueous solutions Catalytic activity Chemical precipitation Chemical synthesis Cobalt Fourier transforms Infrared analysis Infrared spectroscopy Iron Light Nanomaterials Nanoparticles Nitrates Optical properties Photocatalysis Photodegradation Photoluminescence Pollutants Raman spectroscopy Sol-gel processes Spectrum analysis Titanium dioxide Ultraviolet radiation Water treatment X-ray diffraction |
| title | Synthesis of Fe- and Co-Doped TiO2 with Improved Photocatalytic Activity Under Visible Irradiation Toward Carbamazepine Degradation |
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