Morphology dependence of Raman properties of carbon nanotube layers formed on nanostructured CeO2 films

Heng Li, Andrea Petz, Hui Yan, Jia Cai Nie, Sándor Kunsági-Máté

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Multiwalled carbon nanotubes (MWCNTs) were deposited from solution phase onto the nanostructured CeO2 films grown on a sapphire substrate. High-resolution images by scanning electron microscopy showed that MWCNTs laid on the top of CeO2 islands. Raman shifts of these combinatorial materials showed considerable dependence on the morphology of the underlying CeO2 nanostructures. Quantum chemical calculations validated the resonant nanotube vibrations, especially for the stationary longitudinal wave at typical surface morphology, as the origin of this unexpected property of the Raman signal. Considering that the CeO2 surface morphology is fully controlled by the experimental setup of growth, properties of the CNT layers are tunable toward the requirements of practical applications.

Original languageEnglish
Pages (from-to)1480-1483
Number of pages4
JournalJournal of Physical Chemistry C
Volume115
Issue number5
DOIs
Publication statusPublished - Feb 10 2011

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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