Insight into the Mechanism of the Thermal Reduction of Graphite Oxide: Deuterium-Labeled Graphite Oxide Is the Key

0445113 - ÚJF 2016 RIV US eng J - Článek v odborném periodiku
Sofer, Z. - Jankovský, O. - Šimek, P. - Sedmidubský, D. - Šturala, J. - Kosina, J. - Mikšová, Romana - Macková, Anna - Mikulics, M. - Pumera, M.
Insight into the Mechanism of the Thermal Reduction of Graphite Oxide: Deuterium-Labeled Graphite Oxide Is the Key.
ACS Nano. Roč. 9, č. 5 (2015), s. 5478-5485. ISSN 1936-0851. E-ISSN 1936-086X
Grant CEP: GA ČR(CZ) GA15-09001S; GA ČR(CZ) GBP108/12/G108
Grant ostatní: GA MŠk(CZ) LM2010005
Institucionální podpora: RVO:61389005
Klíčová slova: graphene * exfoliation * mechanism * isotope labeling * graphite oxide
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 13.334, rok: 2015

Graphite oxides were prepared by the Hofmann, Hummers, Staudenmaier, and Brodie methods, and a deuterium-labeled analogue was synthesized by the Hofmann method. All graphite oxides were analyzed not only using the traditional techniques but also by gas chromatography-mass spectrometry (GC-MS) during exfoliation in hydrogen and nitrogen atmospheres. GC-MS enabled us to compare differences between the chemical compositions of the organic exfoliation products formed during the thermal reduction of these graphite oxides. Nuclear analytical methods (Rutherford backscattering spectroscopy, elastic recoil detection analysis) were used to calculate the concentrations of light elements, including the ratio of hydrogen to deuterium. Combining all of these results we were able to determine graphite oxide's thermal reduction mechanism. Carbon dioxide, carbon monoxide, and water are formed from the thermal reduction of graphite oxide. This process is also accompanied by various radical reactions th
Trvalý link: http://hdl.handle.net/11104/0247533