| Title | Intrinsic Wettability in Pristine Graphene |
| Authors | Zhang, Jincan Jia, Kaicheng Huang, Yongfeng Liu, Xiaoting Xu, Qiuhao Wang, Wendong Zhang, Rui Liu, Bingyao Zheng, Liming Chen, Heng Gao, Peng Meng, Sheng Lin, Li Peng, Hailin Liu, Zhongfan |
| Affiliation | Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Ctr Nanochem,Beijing Sci & Engn Ctr Nanocarbons, Beijing 100871, Peoples R China Beijing Graphene Inst, Beijing 100095, Peoples R China Univ Cambridge, Dept Engn, Cambridge CB3 0FA, England Peking Univ, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China Univ Manchester, Dept Phys & Astron, Manchester M13 9PL, Lancs, England Peking Univ, Sch Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China Natl Univ Singapore, Mat Sci & Engn, Singapore 119077, Singapore |
| Keywords | SUPPORTED GRAPHENE RAMAN-SPECTROSCOPY MOLECULAR-DYNAMICS ENERGY |
| Issue Date | Dec-2021 |
| Publisher | ADVANCED MATERIALS |
| Abstract | The wettability of graphene remains controversial owing to its high sensitivity to the surroundings, which is reflected by the wide range of reported water contact angle (WCA). Specifically, the surface contamination and underlying substrate would strongly alter the intrinsic wettability of graphene. Here, the intrinsic wettability of graphene is investigated by measuring WCA on suspended, superclean graphene membrane using environmental scanning electron microscope. An extremely low WCA with an average value approximate to 30 degrees is observed, confirming the hydrophilic nature of pristine graphene. This high hydrophilicity originates from the charge transfer between graphene and water molecules through H-pi interaction. The work provides a deep understanding of the water-graphene interaction and opens up a new way for measuring the surface properties of 2D materials. |
| URI | http://hdl.handle.net/20.500.11897/632737 |
| ISSN | 0935-9648 |
| DOI | 10.1002/adma.202103620 |
| Indexed | SCI(E) |
| Appears in Collections: | å å¦ä¸ å å å·¥ç¨ å¦é ¢ 前沿交叉学科研究院 物理学院 |
