Production of hierarchical all graphitic structures: A systematic study

Kyriaki Tsirka; Georgios Foteinidis; Konstantinos Dimos; Lazaros Tzounis; Dimitrios Gournis; Alkiviadis S Paipetis

doi:10.1016/j.jcis.2016.10.075

Production of hierarchical all graphitic structures: A systematic study

J Colloid Interface Sci. 2017 Feb 1:487:444-457. doi: 10.1016/j.jcis.2016.10.075. Epub 2016 Oct 26.

Authors

Kyriaki Tsirka¹, Georgios Foteinidis¹, Konstantinos Dimos², Lazaros Tzounis¹, Dimitrios Gournis¹, Alkiviadis S Paipetis³

Affiliations

¹ Department of Materials Science & Engineering, University of Ioannina, GR-45110 Ioannina, Greece.
² Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", 15341 Ag. Paraskevi Attikis, Athens, Greece; Department of Materials Science & Engineering, University of Ioannina, GR-45110 Ioannina, Greece.
³ Department of Materials Science & Engineering, University of Ioannina, GR-45110 Ioannina, Greece. Electronic address: paipetis@cc.uoi.gr.

PMID: 27814556
DOI: 10.1016/j.jcis.2016.10.075

Abstract

We report the production of hierarchical all graphitic structures through a systematic study involving the use of wet chemical treatments for dip coating of carbon fibers (CFs) for surface grafting with multiwalled carbon nanotubes (CNTs). Realization of a thin homogeneous veil of CNTs onto the CF surface was achieved through an extensive parametric survey. Optimization of aqueous dispersions of CNTs eliminated the need for oxidation of the CF surface. The effects of chemical processes onto the surface and structural characteristics of the involved graphitic species were evaluated via thermogravimetric analysis, and X-ray photoelectron, infrared and Raman spectroscopies. The dielectric properties of the produced CNT aqueous dispersions were monitored via electrochemical impedance spectroscopy. A final assessment of the produced hierarchical CFs was performed through scanning electron microscopy.

Keywords: Carbon fibers; Carbon nanotubes; EIS; FTIR; Hierarchical composites; Raman; SEM; TGA; Wet chemical treatment; XPS.