Wettability of graphene nanoribbons films with different surface density
| Autor: | Zongzhi Zhang, Xiao Hu, Ya Deng, Xiannian Chi, Jian Zhang, Gu Hou, Weiguo Chu, Pei Wu, Lianfeng Sun, Jean Pierre Nshimiyimana, Siyu Liu |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Silicon Scanning electron microscope General Chemical Engineering chemistry.chemical_element Nanotechnology 02 engineering and technology General Chemistry Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Contact angle symbols.namesake Chemical engineering chemistry Sputtering law symbols Wetting 0210 nano-technology Raman spectroscopy Graphene nanoribbons |
| Zdroj: | RSC Advances. 7:11890-11895 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c7ra00770a |
| Popis: | In this work, graphene nanoribbons (GNRs) films with different surface density are prepared on silicon substrates. These GNRs films are obtained by unzipping single-walled carbon nanotubes (SWNTs) using Zn sputtering and HCl treatment. The morphologies of the GNRs films are characterized with scanning electron microscopy (SEM), atomic force microscopy (AFM) and Raman spectroscopy. The contact angle of water on GNRs films increases with the increasing surface density of the GNRs. The wettability of the GNRs films changes from hydrophilic to hydrophobic with increasing density. Meanwhile, the contact angle of water of GNRs is smaller than that of SWNTs for the film with same density. The corresponding mechanisms are proposed and discussed. |
| Databáze: | OpenAIRE |
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