TU Darmstadt / ULB / TUbiblio

Fabrication of nitrogen-doped TiO2 monolith with well-defined macroporous and bicrystalline framework and its photocatalytic performance under visible light

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), pp. 809-816. Elsevier Science Publishing, ISSN 09552219,
[Article]

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.

Item Type: Article
Erschienen: 2014
Creators: Ruzimuradov, Olim ; Nurmanov, Suvankul ; Hojamberdiev, Mirabbos ; Prasad, Ravi Mohan ; Gurlo, Aleksander ; Broetz, Joachim ; Nakanishi, Kazuki ; Riedel, Ralf
Title: Fabrication of nitrogen-doped TiO2 monolith with well-defined macroporous and bicrystalline framework and its photocatalytic performance under visible light
Language: English
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.

Journal or Publication Title: Journal of the European Ceramic Society
Journal volume: 34
Number: 3
Publisher: Elsevier Science Publishing
Uncontrolled Keywords: Titania monolith, Nitrogen doping, Porosity, Ammonolysis, Photocatalyst
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
11 Department of Materials and Earth Sciences > Material Science > Structure Research
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 21 Feb 2014 09:41
Official URL: http://dx.doi.org/10.1016/j.jeurceramsoc.2013.10.009
Identification Number: doi:10.1016/j.jeurceramsoc.2013.10.009
Funders: 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.
Export:
Suche nach Titel in: TUfind oder in Google
Send an inquiry Send an inquiry

Options (only for editors)
Show editorial Details Show editorial Details