Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China.
Nanoscale Horiz. 2019 Mar 1;4(2):339-364. doi: 10.1039/c8nh00348c. Epub 2018 Dec 14.
As a member of the carbon material family, graphene has long been the focus of research on account of its abundant excellent properties. Nevertheless, many previous research works have attached much importance to its mechanical capacity and electrical properties, and not to its surface wetting properties with respect to water. In this review, a series of methods are put forward for characterization of the water contact angle of graphene, such as experimental measurements, classic molecular dynamics simulations, and formula calculations. A series of factors that affect the wettability of graphene, including defects, controllable atmosphere, doping, and electric field, are also discussed in detail, and have rarely have been covered in other review articles before. Finally, with the developments of smart surfaces, a reversible wettability variation of graphene from hydrophobic to hydrophilic is important in the presence of external stimulation and is discussed in detail herein. It is anticipated that graphene could serve as a tunable wettability coating for further developments in electronic devices and brings a new perspective to the construction of smart material surfaces.
作为碳材料家族的一员，石墨烯因其丰富的优异性能而长期以来一直是研究的焦点。然而，许多以前的研究工作都非常重视其机械性能和电性能，而对其与水的表面润湿性重视不足。在这篇综述中，提出了一系列用于表征石墨烯水接触角的方法，包括实验测量、经典分子动力学模拟和公式计算。还详细讨论了一系列影响石墨烯润湿性的因素，包括缺陷、可控气氛、掺杂和电场，这些因素在以前的其他综述文章中很少涉及。最后，随着智能表面的发展，在外力刺激下，石墨烯的润湿性从疏水到亲水的可逆变化非常重要，本文对此进行了详细讨论。预计石墨烯可用作可调节润湿性的涂层，以进一步开发电子设备，并为智能材料表面的构建带来新的视角。
