Ruzimuradov, Olim ; Sharipov, Kongratbay ; Yarbekov, Abdurasul ; Saidov, Kamoladdin ; Hojamberdiev, Mirabbos ; Prasad, Ravi Mohan ; Cherkashinin, Gennady ; Riedel, Ralf (2015)
A facile preparation of dual-phase nitrogen-doped TiO2–SrTiO3 macroporous monolithic photocatalyst for organic dye photodegradation under visible light.
In: Journal of the European Ceramic Society, 35 (6)
doi: 10.1016/j.jeurceramsoc.2014.12.023
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
A dual-phase nitrogen-doped TiO2–SrTiO3 macroporous monolithic photocatalyst was fabricated through the impregnation of the preformed TiO2 gel in a Sr2+-containing alcohol–water solution followed by nitridation under a modest flow of ammonia gas at 800 °C for 2 h. The fabricated monolithic photocatalyst was characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), mercury porosimetry, N2 gas adsorption (SBET), X-ray photoelectron spectroscopy (XPS), and ultraviolet–visible (UV–vis) spectroscopy. The XRD results showed that the fabricated monolithic photocatalyst is comprised of two crystalline phases (anatase TiO2 and SrTiO3) and possesses a highly interconnected (co-continuous) macroporous framework. The photocatalytic activity of the fabricated monolithic photocatalyst was evaluated by the photodegradation of organic dye (Rhodamine B) over the samples under visible light. As expected, the N-doped TiO2–SrTiO3 macroporous monolithic photocatalyst showed a higher photodegradation rate constant (0.0019 min−1) compared to the undoped TiO2–SrTiO3 (0.0010 min−1) under the identical experimental conditions due mainly to the band gap reduction.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Ruzimuradov, Olim ; Sharipov, Kongratbay ; Yarbekov, Abdurasul ; Saidov, Kamoladdin ; Hojamberdiev, Mirabbos ; Prasad, Ravi Mohan ; Cherkashinin, Gennady ; Riedel, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | A facile preparation of dual-phase nitrogen-doped TiO2–SrTiO3 macroporous monolithic photocatalyst for organic dye photodegradation under visible light |
| Sprache: | Englisch |
| Publikationsjahr: | Juni 2015 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the European Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 35 |
| (Heft-)Nummer: | 6 |
| DOI: | 10.1016/j.jeurceramsoc.2014.12.023 |
| Kurzbeschreibung (Abstract): | A dual-phase nitrogen-doped TiO2–SrTiO3 macroporous monolithic photocatalyst was fabricated through the impregnation of the preformed TiO2 gel in a Sr2+-containing alcohol–water solution followed by nitridation under a modest flow of ammonia gas at 800 °C for 2 h. The fabricated monolithic photocatalyst was characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), mercury porosimetry, N2 gas adsorption (SBET), X-ray photoelectron spectroscopy (XPS), and ultraviolet–visible (UV–vis) spectroscopy. The XRD results showed that the fabricated monolithic photocatalyst is comprised of two crystalline phases (anatase TiO2 and SrTiO3) and possesses a highly interconnected (co-continuous) macroporous framework. The photocatalytic activity of the fabricated monolithic photocatalyst was evaluated by the photodegradation of organic dye (Rhodamine B) over the samples under visible light. As expected, the N-doped TiO2–SrTiO3 macroporous monolithic photocatalyst showed a higher photodegradation rate constant (0.0019 min−1) compared to the undoped TiO2–SrTiO3 (0.0010 min−1) under the identical experimental conditions due mainly to the band gap reduction. |
| Freie Schlagworte: | Photocatalysis, TiO2–SrTiO3, Nitrogen doping, Macroporosity, Porous monolith |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Oberflächenforschung |
| Hinterlegungsdatum: | 05 Feb 2015 09:53 |
| Letzte Änderung: | 10 Feb 2016 12:15 |
| PPN: | |
| Sponsoren: | OR and MH would like to thank the Erasmus–Mundus FAME (Functionalized Advanced Materials and Engineering) Master Program for Visiting Scholarships under which the present study was carried out., Also, this work was partially supported by the Fundamental Scientific Program for Young Scientists (YF7-002) of the Committee for the Coordination of Scientific and Technological Development under the Cabinet of the Ministers of the Republic of Uzbekistan |
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