Blister formation during graphite surface oxidation by Hummers' method.
| Autor: | Sinitsyna OV; Laboratory for Physical Chemistry of Polymers, A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova St. 28, Moscow 119991, Russia., Meshkov GB; Physics Department, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia., Grigorieva AV; Department of Materials Science, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia., Antonov AA; Optigraph GmbH, Rudower Chaussee 29, 12489 Berlin, Germany., Grigorieva IG; Optigraph GmbH, Rudower Chaussee 29, 12489 Berlin, Germany., Yaminsky IV; Laboratory for Physical Chemistry of Polymers, A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova St. 28, Moscow 119991, Russia.; Physics Department, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia. |
|---|---|
| Jazyk: | angličtina |
| Zdroj: | Beilstein journal of nanotechnology [Beilstein J Nanotechnol] 2018 Feb 02; Vol. 9, pp. 407-414. Date of Electronic Publication: 2018 Feb 02 (Print Publication: 2018). |
| DOI: | 10.3762/bjnano.9.40 |
| Abstrakt: | Graphite oxide has a complex structure that can be modified in many ways to obtain materials for a wide range of applications. It is known that the graphite precursor has an important role in the synthesis of graphite oxide. In the present study, the basal-plane surface of highly annealed pyrolythic graphite (HAPG) was oxidized by Hummers' method and investigated by Raman spectroscopy and atomic force microscopy. HAPG was used as a graphite precursor because its surface after cleavage contains well-ordered millimeter-sized regions. The treatment resulted in graphite intercalation by sulfuric acid and blister formation all over the surface. Surprisingly, the destruction of the sp 2 -lattice was not detected in the ordered regions. We suggest that the reagent diffusion under the basal plane surface occurred through the cleavage steps and dislocations with the Burgers vector parallel to the c -axis in graphite. |
| Databáze: | MEDLINE |
| Externí odkaz: |
|