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Title: Template synthesis and luminescence properties of TiO{sub 2}:Eu{sup 3+} nanotubes

Abstract

Uniform TiO{sub 2}:Eu{sup 3+} nanotubes have been successfully synthesized through a simple solvothermal process with carbon nanotubes (CNTs) as templates, free of any surfactant or catalyst. X-ray diffraction (XRD) results demonstrate that the product is a pure anatase phase of TiO{sub 2}. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images indicate that the as-obtained TiO{sub 2}:Eu{sup 3+} nanotubes are uniform in size and distribution, and the thickness of the wall is about 8 nm. The possible formation mechanism has also been proposed. The luminescent spectrum shows that TiO{sub 2}:Eu{sup 3+} nanotubes exhibit a red emission at 612 nm due to the {sup 5}D{sub 0}→{sup 7}F{sub 2} transition. Furthermore, this synthetic route is promising for the preparation of other one-dimensional inorganic nanomaterials because of its simplicity and the low cost of the starting reagents. - Graphical abstract: This picture is the illustration for the formation process of TiO{sub 2}:Eu{sup 3+} nanotubes. Display Omitted - Highlights: • TiO{sub 2}:Eu{sup 3+} nanotubes have been prepared through a simple solvothermal process. • The TiO{sub 2}:Eu{sup 3+} nanotubes are uniform in size and distribution. • Under UV light excitation, the TiO{sub 2}:Eu{sup 3+} nanotubes show strong red emission.

Authors:
; ; ; ; ;  [1];  [2];  [1]
  1. College of Chemistry, Jilin University, Changchun 130012 (China)
  2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012 (China)
Publication Date:
OSTI Identifier:
22274206
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 210; Journal Issue: 1; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY; CARBON NANOTUBES; CATALYSTS; DISTRIBUTION; DOPED MATERIALS; EUROPIUM IONS; LUMINESCENCE; SCANNING ELECTRON MICROSCOPY; SPECTRA; SURFACTANTS; SYNTHESIS; THICKNESS; TITANIUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

Zhao, Huan, Zheng, Keyan, Sheng, Ye, Li, Hongbo, Zhang, Hongguang, Qi, Xiaofei, Shi, Zhan, and Zou, Haifeng, E-mail: zouhf@jlu.edu.cn. Template synthesis and luminescence properties of TiO{sub 2}:Eu{sup 3+} nanotubes. United States: N. p., 2014. Web. doi:10.1016/J.JSSC.2013.11.016.
Zhao, Huan, Zheng, Keyan, Sheng, Ye, Li, Hongbo, Zhang, Hongguang, Qi, Xiaofei, Shi, Zhan, & Zou, Haifeng, E-mail: zouhf@jlu.edu.cn. Template synthesis and luminescence properties of TiO{sub 2}:Eu{sup 3+} nanotubes. United States. doi:10.1016/J.JSSC.2013.11.016.
Zhao, Huan, Zheng, Keyan, Sheng, Ye, Li, Hongbo, Zhang, Hongguang, Qi, Xiaofei, Shi, Zhan, and Zou, Haifeng, E-mail: zouhf@jlu.edu.cn. Sat . "Template synthesis and luminescence properties of TiO{sub 2}:Eu{sup 3+} nanotubes". United States. doi:10.1016/J.JSSC.2013.11.016.
@article{osti_22274206,
title = {Template synthesis and luminescence properties of TiO{sub 2}:Eu{sup 3+} nanotubes},
author = {Zhao, Huan and Zheng, Keyan and Sheng, Ye and Li, Hongbo and Zhang, Hongguang and Qi, Xiaofei and Shi, Zhan and Zou, Haifeng, E-mail: zouhf@jlu.edu.cn},
abstractNote = {Uniform TiO{sub 2}:Eu{sup 3+} nanotubes have been successfully synthesized through a simple solvothermal process with carbon nanotubes (CNTs) as templates, free of any surfactant or catalyst. X-ray diffraction (XRD) results demonstrate that the product is a pure anatase phase of TiO{sub 2}. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images indicate that the as-obtained TiO{sub 2}:Eu{sup 3+} nanotubes are uniform in size and distribution, and the thickness of the wall is about 8 nm. The possible formation mechanism has also been proposed. The luminescent spectrum shows that TiO{sub 2}:Eu{sup 3+} nanotubes exhibit a red emission at 612 nm due to the {sup 5}D{sub 0}→{sup 7}F{sub 2} transition. Furthermore, this synthetic route is promising for the preparation of other one-dimensional inorganic nanomaterials because of its simplicity and the low cost of the starting reagents. - Graphical abstract: This picture is the illustration for the formation process of TiO{sub 2}:Eu{sup 3+} nanotubes. Display Omitted - Highlights: • TiO{sub 2}:Eu{sup 3+} nanotubes have been prepared through a simple solvothermal process. • The TiO{sub 2}:Eu{sup 3+} nanotubes are uniform in size and distribution. • Under UV light excitation, the TiO{sub 2}:Eu{sup 3+} nanotubes show strong red emission.},
doi = {10.1016/J.JSSC.2013.11.016},
journal = {Journal of Solid State Chemistry},
number = 1,
volume = 210,
place = {United States},
year = {Sat Feb 15 00:00:00 EST 2014},
month = {Sat Feb 15 00:00:00 EST 2014}
}
  • Graphical abstract: This picture illustration for the formation process of TiO{sub 2}:Eu{sup 3+} nanorods and spindle-shaped nanoparticles. Display Omitted Highlights: ► TiO{sub 2}:Eu{sup 3+} nanorods and spindle-shaped nanoparticles were prepared. ► The nanotubes could transform to nanorods and spindle-shaped nanoparticles. ► The luminescence properties are dependent on the increases of the bandgap. -- Abstract: TiO{sub 2}:Eu{sup 3+} nanorods and spindle-shaped nanoparticles have been successfully prepared through simple calcination and hydrothermal process respectively using titanate as the precursors. On the basis of X-ray diffraction results, the as-obtained precursors are titanate (H{sub 2}Ti{sub 2}O{sub 5}·H{sub 2}O), while nanorods and spindle-shaped nanoparticles aremore » pure anatase phase of TiO{sub 2}. TEM and SEM images show that the as-formed precursor could be transformed from nanotubes into nanorods and spindle-shaped nanoparticles by the calcination and hydrothermal process respectively. Under UV light excitation, both the TiO{sub 2}:Eu{sup 3+} nanorods and spindle-shaped nanoparticles exhibit the strong red emission. In addition, the luminescence intensity of TiO{sub 2}:Eu{sup 3+} nanorods is higher than that of TiO{sub 2}:Eu{sup 3+} spindle-shaped nanoparticles due to the increases of the bandgap of the TiO{sub 2} nanorods.« less
  • A series of uniform, monodispersed Gd(OH){sup 3}:Eu{sup 3+} nanospheres less than 100 nm were successfully synthesized with iron ions as catalyst and DMF as solvent under the solvothermal condition. Cetyltrimethyl ammonium bromide (CTAB) and Polyvinylpyrrolidone (PVP) were performed as co-surfactant during this facile procedure should be changed as A series of uniform, monodisperse Gd(OH){sup 3}:Eu{sup 3+} nanospheres less than 100 nm in diameter were successfully synthesized with solvothermal method. Iron ion was used as catalyst and Dimethylformamide (DMF) as solvent, Cetyltrimethyl Ammonium Bromide (CTAB) and Polyvinylpyrrolidone (PVP) were performed as surfactants. Further calcination process was applied to prepare Gd{sub 2}O{submore » 3}:Eu{sup 3+} nanoshpheres during this facile procedure. -- Graphical abstract: Uniform and monodisperse Gd{sub 2}O{sub 3}:Eu{sup 3+} and Gd{sub 2}O{sub 3}:Eu{sup 3+}SiO{sub 2} monodisperse were synthesized by annealed relative parent's Gd(OH){sub 3}:Eu{sup 3+} and Gd(OH){sub 3}:Eu{sup 3+}SiO{sub 2}, respectively. Their morphology and luminescence properties all strongly depended on the iron concentration. Display Omitted« less
  • Highlights: • Eu{sup 3+} doped Y{sub 2}O{sub 3} nanotubes. • Hydrothermal synthesis of Y{sub 2}O{sub 3} coated Y{sub 2}O{sub 3}:Eu{sup 3+} nanostructures assissted with a further heat treatment. • Tunable coating ratios of Y{sub 2}O{sub 3} coated Y{sub 2}O{sub 3}:Eu{sup 3+} nanophosphor. • Enhanced photoluminescence intensity of Y{sub 2}O{sub 3}:Eu{sup 3+} more than 60% by Y{sub 2}O{sub 3} surface coating. - Abstract: Novel Y{sub 2}O{sub 3} coated Y{sub 2}O{sub 3}:Eu{sup 3+} nanotubes with different coating ratios were synthesized successfully by a facile two-step process, including hydrothermal synthesis of Y(OH){sub 3} coated Y(OH){sub 3}:Eu{sup 3+} as precursors and then calcination ofmore » them at 1000 °C for 2 h. X-ray diffraction patterns and field emission scanning electron microscope images indicated these Y{sub 2}O{sub 3} coated Y{sub 2}O{sub 3}:Eu{sup 3+} phosphors possess tubular nanostructures. The photoluminescence properties of Y{sub 2}O{sub 3} coated Y{sub 2}O{sub 3}:Eu{sup 3+} were systematically investigated by photoluminescence spectra, and photoluminescence enhancement was observed after proper coating. In other words, the coating ratio played a crucial role in photoluminescence efficiency. When it was 1/9, the photoluminescence intensity of {sup 5}D{sub 0} → {sup 7}F{sub 2} emission (about 613 nm) was 60% higher than that of Y{sub 2}O{sub 3}: Eu{sup 3+} phosphors under 255 nm excitation. Therefore, surface coating may be an alternative route for enhanced photoluminescence properties of the Y{sub 2}O{sub 3}:Eu{sup 3+} red-emitting phosphor.« less
  • Y{sub 2}Te{sub 4}O{sub 11}:Eu{sup 3+} and Y{sub 2}Te{sub 5}O{sub 13}:Eu{sup 3+} single crystals in sub-millimeter scale were synthesized from the binary oxides (Y{sub 2}O{sub 3}, Eu{sub 2}O{sub 3} and TeO{sub 2}) using CsCl as fluxing agent. Crystallographic structures of the undoped yttrium oxotellurates(IV) Y{sub 2}Te{sub 4}O{sub 11} and Y{sub 2}Te{sub 5}O{sub 13} have been determined and refined from single-crystal X-ray diffraction data. In Y{sub 2}Te{sub 4}O{sub 11}, a layered structure is present where the reticulated sheets consisting of edge-sharing [YO{sub 8}]{sup 13-} polyhedra are interconnected by the oxotellurate(IV) units, whereas in Y{sub 2}Te{sub 5}O{sub 13} only double chains of condensedmore » yttrium-oxygen polyhedra with coordination numbers of 7 and 8 are left, now linked in two crystallographic directions by the oxotellurate(IV) entities. The Eu{sup 3+} luminescence spectra and the decay time from different energy levels of the doped compounds were investigated and all detected emission levels were identified. Luminescence properties of the Eu{sup 3+} cations have been interpreted in consideration of the now accessible detailed crystallographic data of the yttrium compounds, providing the possibility to examine the influence of the local symmetry of the oxygen coordination spheres. - Graphical abstract: The unique rare-earth metal(III) site in Y{sub 2}Te{sub 4}O{sub 11} coordinated by eight oxygen atoms in the shape of a distorted trigonal dodecahedron where also the Eu{sup 3+} cations of the doped compound reside.« less
  • The spectra and kinetics of luminescence damping, IR absorption, and reflection spectra and luminescence excitation of cesium europium uranyl pyrophosphate in the 12 000--50 000-cm/sup -1/ region are studied. The presence of electron-excitation-energy transfer from UO/sup 2 +//sub 2/ to Eu/sup 3 +/ is established, and its efficiency and probability are calculated. The predominance of the exchange--resonance mechanism of energy transfer is shown, which is caused by the covalent character of the bonds of the pyrophosphate groups with uranyl and europium ions.