| Autor: |
Shengkai Yang, Kelei Zhuo, Zezhong Zhang, Jingli Yang, Yujuan Chen, Jianji Wang |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Materials Research Express, Vol 6, Iss 12, p 1250j2 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2053-1591 |
| DOI: |
10.1088/2053-1591/ab5e36 |
| Popis: |
In this work, we aimed to prepare graphene with high concentration ( C _G ) or quality (indicated by I _D / I _G ) by sonication-assisted exfoliation in aqueous sulfonated asphalt (SAS) solution. The highest C _G can reach 0.181 mg ml ^−1 , while the smallest I _D / I _G is only 0.331 in the investigated range. Meanwhile, we observed that C _G and I _D / I _G changed in the opposite trend with the increase of SAS concentration, and reached their extreme values simultaneously. This was attributed to SAS’s agglomeration-induced redistribution of total energy absorbed by graphite between exfoliation and crushing. The graphene size was mainly within 100–400 nm and most of layer number was |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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