BROWSE

Related Researcher

Author

Baek, Jong-Beom
Center for Dimension-Controllable Organic Frameworks
Research Interests
  • Covalent Organic Frameworks (COFs), Carbon Nanotubes(CNTs), graphene, Energy Conversion and Storage

ITEM VIEW & DOWNLOAD

The oxidation mechanism of highly ordered pyrolytic graphite in a nitric acid/sulfuric acid mixture

Cited 4 times inthomson ciCited 4 times inthomson ci
Title
The oxidation mechanism of highly ordered pyrolytic graphite in a nitric acid/sulfuric acid mixture
Author
Shin, Yeon-RanJung, Sun-MinJeon, In-YupBaek, Jong-Beom
Keywords
Acid mixtures; Carbon based materials; Corrosion process; Graphitic carbons; Graphitic layers; Highly ordered pyrolytic graphites; Oxidation mechanisms; Structural defect; X-ray photoelectrons
Issue Date
201302
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
CARBON, v.52, no., pp.493 - 498
Abstract
We describe the oxidation mechanism of a highly crystalline graphitic carbon in a nitric acid/sulfuric acid mixture, which is the most commonly used medium for the purification and chemical modification of carbon-based materials. Highly ordered pyrolytic graphite (HOPG) specimens embedded in acid-proof high-density polyethylene were treated in the acid mixture at 100 degrees C for between one to four days. The degree of HOPG damage could be seen by transmission and scanning electron microscopy, X-ray photoelectron and Raman spectroscopy, and X-ray diffraction. In addition to "interlayer-acid-penetration" (acid-intercalation), the results suggest that a new corrosion process could be "direct-acid-penetration" from the outer to inner graphitic layers with nitration and sulfonation. This observation shows that the most commonly used acid mixture is not only introducing oxygenated groups together with nitrogen- and sulfur-containing groups, but also creating structural defects in the graphitic carbon lattice.
URI
Go to Link
DOI
http://dx.doi.org/10.1016/j.carbon.2012.10.001
ISSN
0008-6223
Appears in Collections:
ECHE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU