Water-Soluble Graphite Nanoplatelets Formed by Oleum Exfoliation of Graphite
| Autor: | Oleksandr V. Kuznetsov, W. E. Billups, Ryan V. Thaner, Yanqiu Sun, Arnab Mukherjee, Jay R. Lomeda, Ariana Bratt, JungHo Kang, Kevin F. Kelly |
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| Rok vydání: | 2010 |
| Předmět: |
Materials science
General Chemical Engineering Radical General Chemistry Exfoliation joint Oleum law.invention chemistry.chemical_compound Membrane chemistry Chemical engineering Transmission electron microscopy law Materials Chemistry Graphite Scanning tunneling microscope Composite material Sheet resistance |
| Zdroj: | Chemistry of Materials. 23:9-13 |
| ISSN: | 1520-5002 0897-4756 |
| DOI: | 10.1021/cm100808f |
| Popis: | A facile route to water-soluble graphite nanoplatelets that uses graphite as the starting material is described. The method relies on the addition of phenyl radicals with subsequent sulfonation of the phenyl groups. Atomic force microscopy, high-resolution transmission electron microscopy, and scanning tunneling microscopy images show that a high degree of exfoliation occurs during the sulfonation step. The sheet resistance of the bulk films of the nanoplatelets prepared by vacuum filtration using an anodisc membrane was found to be 212 Ω/sq. |
| Databáze: | OpenAIRE |
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