Oxygen-Driven Unzipping of Graphitic Materials
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- 2 May 2006
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 96 (17), 176101
- https://doi.org/10.1103/physrevlett.96.176101
Abstract
Optical microscope images of graphite oxide (GO) reveal the occurrence of fault lines resulting from the oxidative processes. The fault lines and cracks of GO are also responsible for their much smaller size compared with the starting graphite materials. We propose an unzipping mechanism to explain the formation of cracks on GO and cutting of carbon nanotubes in an oxidizing acid. GO unzipping is initiated by the strain generated by the cooperative alignment of epoxy groups on a carbon lattice. We employ two small GO platelets to show that through the binding of a new epoxy group or the hopping of a nearby existing epoxy group, the unzipping process can be continued during the oxidative process of graphite. The same epoxy group binding pattern is also likely to be present in an oxidized carbon nanotube and cause its breakup.Keywords
This publication has 21 references indexed in Scilit:
- Functionalized Single Graphene Sheets Derived from Splitting Graphite OxideThe Journal of Physical Chemistry B, 2006
- Mechanical properties of graphite oxides:Ab initiosimulations and continuum theoryPhysical Review B, 2004
- Progressive and invasive functionalization of carbon nanotube sidewalls by diluted nitric acid under supercritical conditionsJournal of Materials Chemistry, 2004
- Graphite Oxide: Chemical Reduction to Graphite and Surface Modification with Primary Aliphatic Amines and Amino AcidsLangmuir, 2003
- The emerging field of nanotube biotechnologyNature Reviews Drug Discovery, 2003
- Rational Sidewall Functionalization and Purification of Single-Walled Carbon Nanotubes by Solution-Phase OzonolysisThe Journal of Physical Chemistry B, 2002
- Logic Circuits with Carbon Nanotube TransistorsScience, 2001
- Fluorinated single-wall carbon nanotubesPhysical Review B, 2001
- Fullerene PipesScience, 1998
- Individual single-wall carbon nanotubes as quantum wiresNature, 1997