Synthesis, characterization, and electrocatalytic properties of ultra highly densely packed carbon sub-micrometer sphere chains and sheathed carbon microfiber composites

Zéhira Hamoudi, Brahim Aissa, My Ali El Khakani, Mohamed Mohamedi

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In this work, we introduce the on-substrate preparation and characterization of ultra highly densely packed submicrometer carbon of perfect sphericity and well-connecting to each other forming chainlike compounds. These carbon sub-microsphere (CSMS) chains are highly pure with no catalyst remaining encapsulated within their core as revealed by transmission electron microscopy. X-ray photoelectron spectroscopy survey revealed a surface concentration of carbon being of 97.68 at %, whereas micro-Raman assessment of their quality showed that they are of high graphitic structure. In addition, the static contact angle between a water droplet and the CSMS chains surface is about 151° indicating superhydrophobicity feature. Thermogravimetric analysis showed that CSMS chains are very resistant to oxidation up to 637 °C. Furthermore, the CSMS chains possess enhanced electronic transfer properties. Given these interesting physicochemical properties, the CSMS chains developed here present a distinctive opportunity for creating novel multifunctional composites for potential applications as high temperature structural composites, self-cleaning surfaces, and catalyst supports in energy conversion such as fuel cells.

Original languageEnglish
Pages (from-to)1885-1891
Number of pages7
JournalJournal of Physical Chemistry C
Volume114
Issue number4
DOIs
Publication statusPublished - 4 Feb 2010
Externally publishedYes

Fingerprint

microfibers
micrometers
Carbon
Microspheres
composite materials
carbon
Composite materials
synthesis
Surface cleaning
catalysts
energy conversion
Energy conversion
Catalyst supports
cleaning
fuel cells
Contact angle
Thermogravimetric analysis
Fuel cells
X ray photoelectron spectroscopy
photoelectron spectroscopy

ASJC Scopus subject areas

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

Cite this

Synthesis, characterization, and electrocatalytic properties of ultra highly densely packed carbon sub-micrometer sphere chains and sheathed carbon microfiber composites. / Hamoudi, Zéhira; Aissa, Brahim; El Khakani, My Ali; Mohamedi, Mohamed.

In: Journal of Physical Chemistry C, Vol. 114, No. 4, 04.02.2010, p. 1885-1891.

Research output: Contribution to journalArticle

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