X-ray emission spectra of graphene nanosheets

Bogdan Ilkiv, Svitlana Petrovska, Ruslan Sergiienko, Takaaki Tomai, Etsuro Shibata, Takashi Nakamura, Itaru Honma, Yaroslav Zaulychnyy

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Investigations of the electronic structure of graphene nanosheets synthesized by the reduction of oxidized graphene nanosheets were carried out using ultra-soft X-ray emission spectroscopy (USXES). Oxidized graphene nanosheets were produced from carbon nanofiber starting material using a modified Hummers method. X-ray diffraction, and scanning and transmission electron microscopy investigations were used in addition to USXES to study the electronic structure evolution from carbon nanofibers to graphene nanosheets. The effect of the degree of corrugation of the graphene nanosheets on the fine structure of the CKα-emission bands was revealed by USXES. It was found that corrugation of the graphene nanosheets is caused by overlapping of the π-orbitals and formation of mixed (σ +π)-states.

Original languageEnglish
Pages (from-to)8913-8919
Number of pages7
JournalJournal of Nanoscience and Nanotechnology
Volume12
Issue number12
DOIs
Publication statusPublished - 2012 Dec 1

Keywords

  • Carbon nanofibers
  • Electronic structure
  • Graphene nanosheets
  • Oxidized graphene nanosheets

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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