Facile synthesis of mesoporous Pt-doped, titania-silica nanocomposites as highly photoactive under visible light
Mesoporous titania-silica (MTO) and mesoporous Pt-doped titania-silica (Pt@MTO) nanocomposites were synthesized by a facile synthesis procedure, and then, the nanocomposites were analyzed through a diverse range of techniques. XRD peaks and HRTEM images showed that the anatase phase of MTO and plati...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-11-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785420318640 |
| _version_ | 1818451914501652480 |
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| author | Nadiyah Alahmadi M.S. Amin R.M. Mohamed |
| author_facet | Nadiyah Alahmadi M.S. Amin R.M. Mohamed |
| author_sort | Nadiyah Alahmadi |
| collection | DOAJ |
| description | Mesoporous titania-silica (MTO) and mesoporous Pt-doped titania-silica (Pt@MTO) nanocomposites were synthesized by a facile synthesis procedure, and then, the nanocomposites were analyzed through a diverse range of techniques. XRD peaks and HRTEM images showed that the anatase phase of MTO and platinum was doped on the surface of the morphology of MTO as dots with an average size of 6 nm. Pt metallic nanoparticles were present in samples highly dispersed into mesoporous MTO. The varying portion of doping with Pt in the samples has a positive impact on the surface characteristics of nanocomposites. In addition, the increased ratio of Pt metallic nanoparticles in the samples reduced the band gap energies to 2.12 eV for 2.0% Pt@MTO and reduced the intensity of the emission spectrum by shifting the emission spectrum to a higher wavelength. The photocatalytic activity was measured by the degradation of ciprofloxacin (CIP) in the suspension. The 1.5% Pt@MTO photocatalyst fully photodegraded CIP after 60 min of irradiation. That performance exhibited excellent stability and recyclability. |
| first_indexed | 2024-12-14T21:14:46Z |
| format | Article |
| id | doaj.art-473018201f1d4c86ab58f87b7a8ec871 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-14T21:14:46Z |
| publishDate | 2020-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-473018201f1d4c86ab58f87b7a8ec8712022-12-21T22:47:08ZengElsevierJournal of Materials Research and Technology2238-78542020-11-01961409314102Facile synthesis of mesoporous Pt-doped, titania-silica nanocomposites as highly photoactive under visible lightNadiyah Alahmadi0M.S. Amin1R.M. Mohamed2University of Jeddah, College of Science, Department of Chemistry, Jeddah, Saudi Arabia; Corresponding author.Chemistry Department, Faculty of Science, Ain Shams University, Abbassia, Cairo, Egypt; Chemistry Department, College of Science, Taibah University, Al-Madinah Al-Munawarah, Saudi ArabiaDepartment of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Advanced Materials Department, Central Metallurgical R&D Institute, CMRDI, P.O. Box 87, Helwan, Cairo 11421, EgyptMesoporous titania-silica (MTO) and mesoporous Pt-doped titania-silica (Pt@MTO) nanocomposites were synthesized by a facile synthesis procedure, and then, the nanocomposites were analyzed through a diverse range of techniques. XRD peaks and HRTEM images showed that the anatase phase of MTO and platinum was doped on the surface of the morphology of MTO as dots with an average size of 6 nm. Pt metallic nanoparticles were present in samples highly dispersed into mesoporous MTO. The varying portion of doping with Pt in the samples has a positive impact on the surface characteristics of nanocomposites. In addition, the increased ratio of Pt metallic nanoparticles in the samples reduced the band gap energies to 2.12 eV for 2.0% Pt@MTO and reduced the intensity of the emission spectrum by shifting the emission spectrum to a higher wavelength. The photocatalytic activity was measured by the degradation of ciprofloxacin (CIP) in the suspension. The 1.5% Pt@MTO photocatalyst fully photodegraded CIP after 60 min of irradiation. That performance exhibited excellent stability and recyclability.http://www.sciencedirect.com/science/article/pii/S2238785420318640Pt-doped TiO2CiprofloxacinSol-gelPhotodegradationVisible Light |
| spellingShingle | Nadiyah Alahmadi M.S. Amin R.M. Mohamed Facile synthesis of mesoporous Pt-doped, titania-silica nanocomposites as highly photoactive under visible light Journal of Materials Research and Technology Pt-doped TiO2 Ciprofloxacin Sol-gel Photodegradation Visible Light |
| title | Facile synthesis of mesoporous Pt-doped, titania-silica nanocomposites as highly photoactive under visible light |
| title_full | Facile synthesis of mesoporous Pt-doped, titania-silica nanocomposites as highly photoactive under visible light |
| title_fullStr | Facile synthesis of mesoporous Pt-doped, titania-silica nanocomposites as highly photoactive under visible light |
| title_full_unstemmed | Facile synthesis of mesoporous Pt-doped, titania-silica nanocomposites as highly photoactive under visible light |
| title_short | Facile synthesis of mesoporous Pt-doped, titania-silica nanocomposites as highly photoactive under visible light |
| title_sort | facile synthesis of mesoporous pt doped titania silica nanocomposites as highly photoactive under visible light |
| topic | Pt-doped TiO2 Ciprofloxacin Sol-gel Photodegradation Visible Light |
| url | http://www.sciencedirect.com/science/article/pii/S2238785420318640 |
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