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 journalArticlepeer-review

22 Scopus citations


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 languageEnglish (US)
Article number129
JournalJournal of Nanoparticle Research
Issue number4
StatePublished - Apr 1 2017

Bibliographical note

Funding Information:
The American Heart Association Partnering with Regulators Learning Collaborative is part of the broader Value in Healthcare Initiative, a collaboration of the American Heart Association and the Robert J. Margolis, MD, Center for Health Policy at Duke University. The broader Value in Healthcare Initiative is supported in part by the American Heart Association and industry partners (Amgen, Bristol-Myers Squibb, the Bristol-Myers Squibb-Pfizer Alliance, and the Sanofi-Regeneron Alliance). American Heart Association volunteers (clinicians, patient representatives, and other experts) received reimbursement for travel to project meetings, but no other compensation was provided to Learning Collaborative members. The views of this article do not necessarily represent the views of the Learning Collaborative members or the organizations that they represent. Learning Collaborative members provided feedback on the content of this article, but the content of the article was independently determined by the Duke-Margolis Center, which is part of Duke University, and as such honors the tradition of academic independence on the part of its faculty and scholars. Neither Duke nor the Margolis Center takes partisan positions, but the individual members are free to speak their minds and express their opinions

Funding Information:
Dr Bleser has previously received consulting fees from Merck on vaccine litigation unrelated to this work and serves as Board Vice President (uncompensated) for Shepherd’s Clinic, a clinic providing free healthcare to the uninsured in Baltimore, MD. Dr Saunders has a Consulting Agreement with Yale–New Haven Health System for development of measures and development of quality measurement strategies for Center for Medicare & Medicaid Innovation Alternative Payment Models under Centers for Medicare & Medicaid Services Contract Number 75FCMC18D0042/Task Order Number 75FCMC19F0003, Quality Measure Development, and Analytic Support, Base Period. Dr Wang reports receiving research grants to the Duke Clinical Research Institute from Astra-Zeneca, Bristol-Myers Squibb, Cryolife, Chiesi, Merck, Portola, and Regeneron and receiving honoraria from AstraZeneca, Cryolife, and Sanofi. Dr Hernan-dez reports receiving research funding from American Regent, AstraZeneca, Merck, Novartis, and Verily and receiving consulting fees from Amgen, Astra-Zeneca, Bayer, Boston Scientific, Merck, Novartis, and Relypsa. Dr McClellan is an independent board member on the boards of Johnson & Johnson, Cigna, Alignment Healthcare, and Seer; co-chairs the Accountable Care Learning Collaborative and the Guiding Committee for the Health Care Payment Learning and Action Network; and receives fees for serving as an advisor for Cota and MITRE. Dr Califf is an employee of Verily Life Sciences and Google Life Sciences and is a board member of Cytokinetics. The other authors report no conflicts.

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


  • Irradiation
  • MWCNTs
  • Photoluminescence
  • Recombination
  • TiO nanofibers

ASJC Scopus subject areas

  • Bioengineering
  • Atomic and Molecular Physics, and Optics
  • Chemistry(all)
  • Modeling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics


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