Ruzimuradov, Olim ; Nurmanov, Suvankul ; Hojamberdiev, Mirabbos ; Prasad, Ravi Mohan ; Gurlo, Aleksander ; Broetz, Joachim ; Nakanishi, Kazuki ; Riedel, Ralf (2014)
Fabrication of nitrogen-doped TiO2 monolith with well-defined macroporous and bicrystalline framework and its photocatalytic performance under visible light.
In: Journal of the European Ceramic Society, 34 (3)
doi: 10.1016/j.jeurceramsoc.2013.10.009
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
In this study, hierarchically porous bicrystalline nitrogen-doped titania (N-doped TiO2) monolithic material was fabricated by a simple two-step approach: (i) preparation of TiO2 porous monolith by a sol–gel process of titanium alkoxide in a mild condition utilizing a chelating agent and mineral salt and (ii) annealing of TiO2 porous monolith obtained under a modest flow of ammonia gas at 700 °C for 2 h. The phase composition, crystal structure, morphology, pore structure, and porous properties of the final product were studied by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), mercury porosimetry, and nitrogen physisorption measurement, respectively. The resultant N-doped TiO2 porous monolith possesses a bicrystalline (anatase and rutile) framework with a well-defined macroporosity. The results from X-ray photoelectron spectroscopy (XPS) confirm the formation of Osingle bondTisingle bondN bonds in the N-doped TiO2 porous monolith. The photocatalytic activity of N-doped TiO2 porous monolith was evaluated by the photodegradation of Rhodamine B over the samples under visible light. Nearly 50% of Rhodamine B in aqueous solution was efficiently degraded by N-doped TiO2 porous monolith with the mixed-phase of anatase and rutile under visible light within 120 min.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Ruzimuradov, Olim ; Nurmanov, Suvankul ; Hojamberdiev, Mirabbos ; Prasad, Ravi Mohan ; Gurlo, Aleksander ; Broetz, Joachim ; Nakanishi, Kazuki ; Riedel, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Fabrication of nitrogen-doped TiO2 monolith with well-defined macroporous and bicrystalline framework and its photocatalytic performance under visible light |
| Sprache: | Englisch |
| Publikationsjahr: | März 2014 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the European Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 34 |
| (Heft-)Nummer: | 3 |
| DOI: | 10.1016/j.jeurceramsoc.2013.10.009 |
| Kurzbeschreibung (Abstract): | In this study, hierarchically porous bicrystalline nitrogen-doped titania (N-doped TiO2) monolithic material was fabricated by a simple two-step approach: (i) preparation of TiO2 porous monolith by a sol–gel process of titanium alkoxide in a mild condition utilizing a chelating agent and mineral salt and (ii) annealing of TiO2 porous monolith obtained under a modest flow of ammonia gas at 700 °C for 2 h. The phase composition, crystal structure, morphology, pore structure, and porous properties of the final product were studied by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), mercury porosimetry, and nitrogen physisorption measurement, respectively. The resultant N-doped TiO2 porous monolith possesses a bicrystalline (anatase and rutile) framework with a well-defined macroporosity. The results from X-ray photoelectron spectroscopy (XPS) confirm the formation of Osingle bondTisingle bondN bonds in the N-doped TiO2 porous monolith. The photocatalytic activity of N-doped TiO2 porous monolith was evaluated by the photodegradation of Rhodamine B over the samples under visible light. Nearly 50% of Rhodamine B in aqueous solution was efficiently degraded by N-doped TiO2 porous monolith with the mixed-phase of anatase and rutile under visible light within 120 min. |
| Freie Schlagworte: | Titania monolith, Nitrogen doping, Porosity, Ammonolysis, Photocatalyst |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Strukturforschung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 21 Feb 2014 09:41 |
| Letzte Änderung: | 21 Feb 2014 09:41 |
| PPN: | |
| Sponsoren: | OR would like to thank the Erasmus – Mundus FAME (Functionalized Advanced Materials and Engineering) Master Program for Visiting Scholarship under which the present study was carried out. , MH would like to thank the Alexander von Humboldt (AvH) Stiftung for the award of a postdoctoral research fellowship. |
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