Report
Surfactant-Free Single Layer Graphene in Water
| العنوان: | Surfactant-Free Single Layer Graphene in Water |
|---|---|
| المؤلفون: | Bepete, George, Anglaret, Eric, Ortolani, Luca, Morandi, Vittorio, Pénicaud, Alain, Drummond, Carlos |
| سنة النشر: | 2016 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science, Condensed Matter - Soft Condensed Matter |
| الوصف: | Dispersing graphite in water to obtain true (single layer) graphene (SLG) in bulk quantity in a liquid has been an unreachable goal for materials scientists in the last decade. Likewise, a diagnostic tool for identifying solubilized SLG in situ has been long awaited. Homogeneous stable dispersions of SLG in water are obtained by mixing graphenide (negatively charged graphene) solutions in tetrahydrofuran (THF) with degassed water and evaporating the organic solvent. In situ Raman spectroscopy of these aqueous dispersions shows all the expected characteristics of single layer graphene, including an intense 2D band of Lorentzian shape and linewidth of 28 cm-1. Transmission electron and atomic force microscopies on deposits confirm SLG character. The resulting additive-free stable water dispersions contain 0.16 mg/mL of SLG. Comment: 31 pages, main article has 17 pages, 4 figures, 2 Tables. Presented at Graphene Week (Manchester 2015); NN15, Thessaloniki, July 2015; TNT2015, Toulouse, Sept 2015; GraphITA, Bologna, Italy, Sept 2015; Intl Symp. on Synthetic Carbon Allotropes, Erlangen, Oct. 2015, GDR GNT, Aussois, Dec 2015, GraphIN, Zaragoza, Dec 3, 2015, IWEPNM (Kirchberg, Feb 2016), NanoSpain, Logro\~no (Spain) - March 2016 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1038/nchem.2669 |
| URL الوصول: | http://arxiv.org/abs/1603.05421 |
| رقم الانضمام: | edsarx.1603.05421 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1038/nchem.2669 |
|---|