Multisite luminescence of rare earth doped TiO2 anatase nanoparticles

Antić, Željka; Krsmanović, Radenka; Nikolić, Marko G.; Marinović‐Cincović, Milena; Mitrić, Miodrag; Polizzi, Stefano; Dramićanin, Miroslav D.

doi:10.1016/j.matchemphys.2012.06.016

Cited by 135 publications

(61 citation statements)

References 33 publications

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“…The experimental XRD pattern agrees with the JCPDS card no. nanoparticles in other literature [42]. The peak at 25.4°c onfirms the TiO 2 anatase structure [43].…”

Section: X-ray Diffraction Studysupporting

confidence: 59%

Photocatalytic degradation of indigo carmine using Nd-doped TiO2-decorated graphene oxide nanocomposites

Oppong

Anku

Shukla

et al. 2016

J Sol-Gel Sci Technol

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A series of neodymium-doped titanium dioxide (Nd-TiO 2 ) decorated on graphene oxide (GO) were synthesized by sol-gel method. The structures, morphologies and optical properties of the nanocomposites (Nd-TiO 2 -GO) were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, Fourier transform infrared spectroscopy and ultraviolet-visible spectroscopy. The photocatalytic study of Nd-TiO 2 -GO nanocomposites was evaluated via the degradation of indigo carmine under simulated solar light. Results demonstrated that the photodegradation efficiency of indigo carmine solutions irradiated by solar simulated light for 3 h with the nanocomposites used as a catalyst reached a level of 92 % (0.6 % Nd). This high photocatalytic degradation of indigo carmine solutions by the Nd-TiO 2 -GO nanocomposites is ascribed to the spherical nanocrystalline size of TiO 2 . Graphical Abstract

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“…The experimental XRD pattern agrees with the JCPDS card no. nanoparticles in other literature [42]. The peak at 25.4°c onfirms the TiO 2 anatase structure [43].…”

Section: X-ray Diffraction Studysupporting

confidence: 59%

Photocatalytic degradation of indigo carmine using Nd-doped TiO2-decorated graphene oxide nanocomposites

Oppong

Anku

Shukla

et al. 2016

J Sol-Gel Sci Technol

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“…The incorporation of Eu 3+ ions into TiO 2 nanocrystals was performed using hydrolytic sol-gel route described elsewhere [26]. Briefly, for the synthesis of …”

Section: Synthesis Of Tio 2 Nano-powdersmentioning

confidence: 99%

Visible light absorption of surface modified TiO2 powders with bidentate benzene derivatives

Milićević

Đorđević

Lončarević

et al. 2015

Microporous and Mesoporous Materials

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TiO 2 powders with different specific surface area were prepared using reproducible, sol-gel synthetic route and their ability to form hybrids with catechol and 5-amino salicylic acid was compared with the commercially available Degussa P25 TiO 2 powder. Microstructural characterization involving transmission electron microscopy, X-ray diffraction analysis and nitrogen adsorption-desorption isotherms indicated that TiO 2 samples cover reasonably wide size and/or specific surface area range (50-115 m 2 /g). The surface modification of TiO 2 powders with catechol and 5-amino salicylic acid induced significant shift of absorption to the visible spectral region due to charge transfer complex formation. It should be emphasized that tunable optical properties of TiO 2 in powder form have never been reported in the literature. The largest red M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 2 shift of the absorption onset was observed for sample with the largest specific surface area upon surface modification with both ligands. The binding of the modifier molecules to the surface Ti atoms was studied using Fourier transform infrared spectroscopy.

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“…1 F 3 and 7 F 4 ). According to our previous study, 12) emission spectra are dominated by the emission of Eu 3+ ions located in the low-symmetry crystal site (C 1 ). This type of site can be related to some distorted sites near nanoparticle's surface or other defects.…”

Section: +mentioning

confidence: 82%

“…12) The X-ray diffraction (XRD) powder patterns were recorded using Rigaku SmartLab instrument under the Cu K¡ 1,2 radiation. The intensity of diffraction was measured with continuous scanning at 2°/min.…”

Section: Methodsmentioning

confidence: 99%

Judd–Ofelt Analysis of Eu<sup>3+</sup> Emission in TiO<sub>2</sub> Anatase Nanoparticles

et al. 2015

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Preparation and spectroscopic studies of the TiO 2 nanopowders doped with Eu 3+ ions are described. Efficient emission in the red part of the visible spectrum can be obtained due to theF 2 emission of europium ions. Quantum efficiency of such emission was estimated to be about 0.83, which indicates a rather weak role of the non-radiative losses. However, the increase of Eu 3+ concentration up to 10 at% significantly lowers the quantum efficiency because of the energy transfer and re-absorption processes. Higher doping concentrations (larger than 3 at% of Eu 3+ ) also decrease the covalency of the Eu 3+ O 2¹ chemical bonds.

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Multisite luminescence of rare earth doped TiO2 anatase nanoparticles

Cited by 135 publications

References 33 publications

Photocatalytic degradation of indigo carmine using Nd-doped TiO2-decorated graphene oxide nanocomposites

Photocatalytic degradation of indigo carmine using Nd-doped TiO2-decorated graphene oxide nanocomposites

Visible light absorption of surface modified TiO2 powders with bidentate benzene derivatives

Judd–Ofelt Analysis of Eu<sup>3+</sup> Emission in TiO<sub>2</sub> Anatase Nanoparticles

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Multisite luminescence of rare earth doped TiO2 anatase nanoparticles

Cited by 135 publications

References 33 publications

Photocatalytic degradation of indigo carmine using Nd-doped TiO2-decorated graphene oxide nanocomposites

Photocatalytic degradation of indigo carmine using Nd-doped TiO2-decorated graphene oxide nanocomposites

Visible light absorption of surface modified TiO2 powders with bidentate benzene derivatives

Judd&ndash;Ofelt Analysis of Eu<sup>3+</sup> Emission in TiO<sub>2</sub> Anatase Nanoparticles

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Judd–Ofelt Analysis of Eu<sup>3+</sup> Emission in TiO<sub>2</sub> Anatase Nanoparticles