Xiong Rui, Kim Ho Shin, Zhang Lijuan, Korolovych Volodymyr F, Zhang Shuaidi, Yingling Yaroslava G, Tsukruk Vladimir V
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA.
Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC, 27695-7907, USA.
Angew Chem Int Ed Engl. 2018 Jul 9;57(28):8508-8513. doi: 10.1002/anie.201803076. Epub 2018 May 30.
Constructing advanced functional nanomaterials with pre-designed organized morphologies from low-dimension synthetic and biological components is challenging. Herein, we report an efficient and universal amphiphilicity-driven assembly strategy to construct "hairy" flexible hybrid nanosheets with a 1D cellulose nanofibers (CNFs) net conformally wrapped around 2D graphene oxide (GO) monolayers. This interface-driven bio-synthetic assembly is facilitated by tailoring the surface chemistry of flexible GO sheets, resulting in individual sheets tightly surrounded by dense conformal nanocellulose network. The mechanical stability of the products far exceeds the compressive instability limits of both individual components. Additionally, the CNF network significantly enhances the wetting ability of initial hydrophobic reduced GO nanosheets, allowing fast water transport combined with high filtration efficiency.
利用低维合成和生物组分构建具有预先设计的有序形态的先进功能纳米材料具有挑战性。在此，我们报告了一种高效且通用的两亲性驱动组装策略，以构建“毛发状”柔性杂化纳米片，其具有一维纤维素纳米纤维（CNF）网络共形包裹在二维氧化石墨烯（GO）单层周围。通过调整柔性GO片的表面化学性质促进了这种界面驱动的生物合成组装，导致单个片材被致密的共形纳米纤维素网络紧密包围。产物的机械稳定性远远超过两种单个组分的压缩失稳极限。此外，CNF网络显著提高了初始疏水的还原GO纳米片的润湿性，实现了快速水传输并具有高过滤效率。
