摘要
Natural nacre,consisting of 95 vol%inorganic aragonite platelets and 5 vol%organic matrix,integrates high strength and high toughness because of its unique layered structure and abundant interfacial interactions[1].Inspired by nacre,numerous high-performance layered materials based on two-dimensional(2D)platelets,such as graphene,calcium carbonate,montmorillonite,aluminum oxide,hydroxyapatite,and titanium carbide MXene,have been fabricated in the past decades[2-8].These nacreinspired layered materials could be potentially used as load-bearing structural materials,ion transport channels,gas barrier materials,flexible electrodes,and electromagnetic interference(EMI)shielding materials,among many others.The performance of these materials is determined by several factors,such as the alignment of the platelets,the interlayer interaction,and the compactness of the whole structure.Many assembly strategies,such as wet spinning,stretching,continuous centrifugal casting,and superspreading,have been developed to effectively align 2D platelets[6].Additionally,it has been systematically investigated that the interlayer interactions of adjacent 2D platelets can be strengthened by various interfacial bridging effects,such as hydrogen bonding,ionic bonding,π-πstacking interaction,and covalent bonding[8].
作者
Li-Bo Mao
Shu-Hong Yu
茅瓅波;俞书宏(Division of Nanomaterials and Chemistry,Hefei National Laboratory for Physical Sciences at the Microscale,Institute of Energy,Hefei Comprehensive National Science Center,Department of Chemistry,Institute of Biomimetic Materials and Chemistry,University of Science and Technology of China,Hefei 230026,China)
