Photoluminescence properties of TiO2 nanofibers

Loubna Chetibi; Tetiana Busko; Nikolay Polikarpovich Kulish; Djamel Hamana; Sahraoui Chaieb; Slimane Achour

doi:10.1007/s11051-017-3822-x

Photoluminescence properties of TiO₂ nanofibers

Loubna Chetibi, Tetiana Busko, Nikolay Polikarpovich Kulish, Djamel Hamana, Sahraoui Chaieb, Slimane Achour^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

Multi-walled carbon nanotube (MWCNT)-TiO₂ nanofiber (NF) composites forming a layered nanostructure (MWCNTs/TiO₂ NFs/Ti) were prepared by impregnation at low temperature. Room temperature photoluminescence (PL) of these nanostructures shows a broad intense band in the visible light range (∼450–600 nm). The origin of the PL emission which, mainly, resulted from surface oxygen vacancies and other defects was investigated. We studied the effect of MWCNT deposition on the PL of TiO₂ NFs where the MWCNTs can act as an electron reservoir of electrons emitted from TiO₂ nanofibers when irradiated with UV light. The combination of MWCNTs and TiO₂ results in quenching of TiO₂ luminescence in the visible range. In addition, the prepared surface of MWCNTs-TiO₂ was irradiated with Ti⁺ ions using irradiation energy of 140 keV and doses of 10¹³ ions/cm². Also, this treatment induced the PL intensity quenching due to the generation of non-radiative additional levels inside the band gap. [Figure not available: see fulltext.]

Original language	English (US)
Article number	129
Journal	Journal of Nanoparticle Research
Volume	19
Issue number	4
DOIs	https://doi.org/10.1007/s11051-017-3822-x
State	Published - Apr 1 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017, Springer Science+Business Media Dordrecht.

Keywords

Irradiation
MWCNTs
Photoluminescence
Recombination
TiO nanofibers

ASJC Scopus subject areas

Bioengineering
Atomic and Molecular Physics, and Optics
General Chemistry
Modeling and Simulation
General Materials Science
Condensed Matter Physics

Access to Document

10.1007/s11051-017-3822-x

Cite this

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title = "Photoluminescence properties of TiO2 nanofibers",

abstract = "Multi-walled carbon nanotube (MWCNT)-TiO2 nanofiber (NF) composites forming a layered nanostructure (MWCNTs/TiO2 NFs/Ti) were prepared by impregnation at low temperature. Room temperature photoluminescence (PL) of these nanostructures shows a broad intense band in the visible light range (∼450–600 nm). The origin of the PL emission which, mainly, resulted from surface oxygen vacancies and other defects was investigated. We studied the effect of MWCNT deposition on the PL of TiO2 NFs where the MWCNTs can act as an electron reservoir of electrons emitted from TiO2 nanofibers when irradiated with UV light. The combination of MWCNTs and TiO2 results in quenching of TiO2 luminescence in the visible range. In addition, the prepared surface of MWCNTs-TiO2 was irradiated with Ti+ ions using irradiation energy of 140 keV and doses of 1013 ions/cm2. Also, this treatment induced the PL intensity quenching due to the generation of non-radiative additional levels inside the band gap. [Figure not available: see fulltext.]",

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author = "Loubna Chetibi and Tetiana Busko and Kulish, {Nikolay Polikarpovich} and Djamel Hamana and Sahraoui Chaieb and Slimane Achour",

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T1 - Photoluminescence properties of TiO2 nanofibers

AU - Chetibi, Loubna

AU - Busko, Tetiana

AU - Kulish, Nikolay Polikarpovich

AU - Hamana, Djamel

AU - Chaieb, Sahraoui

AU - Achour, Slimane

PY - 2017/4/1

Y1 - 2017/4/1

N2 - Multi-walled carbon nanotube (MWCNT)-TiO2 nanofiber (NF) composites forming a layered nanostructure (MWCNTs/TiO2 NFs/Ti) were prepared by impregnation at low temperature. Room temperature photoluminescence (PL) of these nanostructures shows a broad intense band in the visible light range (∼450–600 nm). The origin of the PL emission which, mainly, resulted from surface oxygen vacancies and other defects was investigated. We studied the effect of MWCNT deposition on the PL of TiO2 NFs where the MWCNTs can act as an electron reservoir of electrons emitted from TiO2 nanofibers when irradiated with UV light. The combination of MWCNTs and TiO2 results in quenching of TiO2 luminescence in the visible range. In addition, the prepared surface of MWCNTs-TiO2 was irradiated with Ti+ ions using irradiation energy of 140 keV and doses of 1013 ions/cm2. Also, this treatment induced the PL intensity quenching due to the generation of non-radiative additional levels inside the band gap. [Figure not available: see fulltext.]

AB - Multi-walled carbon nanotube (MWCNT)-TiO2 nanofiber (NF) composites forming a layered nanostructure (MWCNTs/TiO2 NFs/Ti) were prepared by impregnation at low temperature. Room temperature photoluminescence (PL) of these nanostructures shows a broad intense band in the visible light range (∼450–600 nm). The origin of the PL emission which, mainly, resulted from surface oxygen vacancies and other defects was investigated. We studied the effect of MWCNT deposition on the PL of TiO2 NFs where the MWCNTs can act as an electron reservoir of electrons emitted from TiO2 nanofibers when irradiated with UV light. The combination of MWCNTs and TiO2 results in quenching of TiO2 luminescence in the visible range. In addition, the prepared surface of MWCNTs-TiO2 was irradiated with Ti+ ions using irradiation energy of 140 keV and doses of 1013 ions/cm2. Also, this treatment induced the PL intensity quenching due to the generation of non-radiative additional levels inside the band gap. [Figure not available: see fulltext.]

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