Abstract
Thermal exfoliation and deoxygenation of graphite oxide is one of the major routes for the preparation of large quantities of graphene-based materials. It is commonly believed that thermal exfoliation leads to the release of H 2O, CO and CO2 gases. Here we show for the first time that in addition to these small simple molecules, there is a wide variety of complex organic molecules that are released from graphite oxide during the exfoliation process, such as alkanes, substituted polycyclic aromatic hydrocarbons and heterocyclic molecules. The compositions of the released volatile compounds depend on the exfoliation atmosphere (Ar, H2), pressure and the preparation methods of graphite oxide (such as Hofmann, Staudenmaier or Hummers). The structures of the decomposition products reflect the characters of graphite oxide precursors and are also directly related to the defects in the graphene products. As such, these findings have profound influences on our understanding on the structural defects of reduced graphenes, which consequently provide further insights into their properties.
| Original language | English |
|---|---|
| Pages (from-to) | 9257-9264 |
| Number of pages | 8 |
| Journal | Physical Chemistry Chemical Physics |
| Volume | 15 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - 2013 Jun 21 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
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Complex organic molecules are released during thermal reduction of graphite oxides. / Sofer, Zdeněk; Šimek, Petr; Pumera, Martin.
In: Physical Chemistry Chemical Physics, Vol. 15, No. 23, 21.06.2013, p. 9257-9264.Research output: Contribution to journal › Article
TY - JOUR
T1 - Complex organic molecules are released during thermal reduction of graphite oxides
AU - Sofer, Zdeněk
AU - Šimek, Petr
AU - Pumera, Martin
PY - 2013/6/21
Y1 - 2013/6/21
N2 - Thermal exfoliation and deoxygenation of graphite oxide is one of the major routes for the preparation of large quantities of graphene-based materials. It is commonly believed that thermal exfoliation leads to the release of H 2O, CO and CO2 gases. Here we show for the first time that in addition to these small simple molecules, there is a wide variety of complex organic molecules that are released from graphite oxide during the exfoliation process, such as alkanes, substituted polycyclic aromatic hydrocarbons and heterocyclic molecules. The compositions of the released volatile compounds depend on the exfoliation atmosphere (Ar, H2), pressure and the preparation methods of graphite oxide (such as Hofmann, Staudenmaier or Hummers). The structures of the decomposition products reflect the characters of graphite oxide precursors and are also directly related to the defects in the graphene products. As such, these findings have profound influences on our understanding on the structural defects of reduced graphenes, which consequently provide further insights into their properties.
AB - Thermal exfoliation and deoxygenation of graphite oxide is one of the major routes for the preparation of large quantities of graphene-based materials. It is commonly believed that thermal exfoliation leads to the release of H 2O, CO and CO2 gases. Here we show for the first time that in addition to these small simple molecules, there is a wide variety of complex organic molecules that are released from graphite oxide during the exfoliation process, such as alkanes, substituted polycyclic aromatic hydrocarbons and heterocyclic molecules. The compositions of the released volatile compounds depend on the exfoliation atmosphere (Ar, H2), pressure and the preparation methods of graphite oxide (such as Hofmann, Staudenmaier or Hummers). The structures of the decomposition products reflect the characters of graphite oxide precursors and are also directly related to the defects in the graphene products. As such, these findings have profound influences on our understanding on the structural defects of reduced graphenes, which consequently provide further insights into their properties.
UR - http://www.scopus.com/inward/record.url?scp=84878087765&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84878087765&partnerID=8YFLogxK
U2 - 10.1039/c3cp51189h
DO - 10.1039/c3cp51189h
M3 - Article
C2 - 23661119
AN - SCOPUS:84878087765
VL - 15
SP - 9257
EP - 9264
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
SN - 1463-9076
IS - 23
ER -