Abstract
Since the discovery of graphene, many different exfoliation processes of graphite oxide have been reported. Thermal reduction is the most often used method for graphene synthesis. It is a general assumption that during the exfoliation process water vapor and carbon-monoxide and -dioxide are produced. In this paper it is shown that more complex products are formed during this process. Graphite oxides, prepared according to Hofmann, Hummers, Staudenmaier and Brodie methods, having different C/O ratios, were exposed to thermal shock. The resulting fragments detected using a time-of-flight spectrometer exhibit that the fragment fingerprints are very similar for all graphite oxides. Our finding challenges the general assumption that only basic gases are formed during thermal exfoliation of graphite oxide. The full understanding of the exfoliation mechanism and products is crucial for reproducible scalable synthesis of reduced graphenes on a large scale. This journal is
| Original language | English |
|---|---|
| Pages (from-to) | 5700-5705 |
| Number of pages | 6 |
| Journal | New Journal of Chemistry |
| Volume | 38 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2014 Dec 1 |
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All Science Journal Classification (ASJC) codes
- Catalysis
- Chemistry(all)
- Materials Chemistry
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Carbon fragments are ripped off from graphite oxide sheets during their thermal reduction. / Jankovský, Ondřej; Hrdličková Kučková, Štěpánka; Pumera, Martin; Šimek, Petr; Sedmidubský, David; Sofer, Zdeněk.
In: New Journal of Chemistry, Vol. 38, No. 12, 01.12.2014, p. 5700-5705.Research output: Contribution to journal › Article
TY - JOUR
T1 - Carbon fragments are ripped off from graphite oxide sheets during their thermal reduction
AU - Jankovský, Ondřej
AU - Hrdličková Kučková, Štěpánka
AU - Pumera, Martin
AU - Šimek, Petr
AU - Sedmidubský, David
AU - Sofer, Zdeněk
PY - 2014/12/1
Y1 - 2014/12/1
N2 - Since the discovery of graphene, many different exfoliation processes of graphite oxide have been reported. Thermal reduction is the most often used method for graphene synthesis. It is a general assumption that during the exfoliation process water vapor and carbon-monoxide and -dioxide are produced. In this paper it is shown that more complex products are formed during this process. Graphite oxides, prepared according to Hofmann, Hummers, Staudenmaier and Brodie methods, having different C/O ratios, were exposed to thermal shock. The resulting fragments detected using a time-of-flight spectrometer exhibit that the fragment fingerprints are very similar for all graphite oxides. Our finding challenges the general assumption that only basic gases are formed during thermal exfoliation of graphite oxide. The full understanding of the exfoliation mechanism and products is crucial for reproducible scalable synthesis of reduced graphenes on a large scale. This journal is
AB - Since the discovery of graphene, many different exfoliation processes of graphite oxide have been reported. Thermal reduction is the most often used method for graphene synthesis. It is a general assumption that during the exfoliation process water vapor and carbon-monoxide and -dioxide are produced. In this paper it is shown that more complex products are formed during this process. Graphite oxides, prepared according to Hofmann, Hummers, Staudenmaier and Brodie methods, having different C/O ratios, were exposed to thermal shock. The resulting fragments detected using a time-of-flight spectrometer exhibit that the fragment fingerprints are very similar for all graphite oxides. Our finding challenges the general assumption that only basic gases are formed during thermal exfoliation of graphite oxide. The full understanding of the exfoliation mechanism and products is crucial for reproducible scalable synthesis of reduced graphenes on a large scale. This journal is
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U2 - 10.1039/c4nj00871e
DO - 10.1039/c4nj00871e
M3 - Article
AN - SCOPUS:84909957554
VL - 38
SP - 5700
EP - 5705
JO - New Journal of Chemistry
JF - New Journal of Chemistry
SN - 1144-0546
IS - 12
ER -