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江雷院士Acc. Chem. Res.最新综述:具有优越力学性能的Bioinspired Layered Materials
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Bioinspired Layered Materials with Superior Mechanical Performance 共11页 引文34篇 Conspectus Nature has inspired researchers to construct structures with ordered layers as candidates for new materials with high mechanical performance. As a prominent example, nacre, also known as mother of pearl, consists of a combination of inorganic plates (aragonite calcium carbonate, 95% by volume) and organic macromolecules (elastic biopolymer, 5% by volume) and shows a unique combination of strength and toughness. Investigations of its structure reveal that the hexagonal platelets of calcium carbonate and the amorphous biopolymer are alternatively assembled into the orderly layered structure. The delicate interface between the calcium carbonate and the biopolymer is well defined. Both the building blocks that make up these assembled layers and the interfaces between the inorganic and organic components contribute to the excellent mechanical property of natural nacre. In this Account, we summarize recent research from our group and from others on the design of bioinspired materials composed by layering various primitive materials. We focus particular attention on nanoscale carbon materials. Using several examples, we describe how the use of different combinations of layered materials leads to particular properties. Flattened double-walled carbon nanotubes (FDWCNTs) covalently cross-linked in a thermoset three-dimensional (3D) network produced the materials with the highest strength. The stiffest layered materials were generated from borate orthoester covalent bonding between adjacent graphene oxide (GO) nanosheets, and the toughest layered materials were fabricated with Al2O3 platelets and chitosan via hydrogen bonding. These new building blocks, such as FDWCNTs and GO, and the replication of the elaborate micro-/nanoscale interface of natural nacre have provided many options for developing new high performance artificial materials. The interface designs for bioinspired layered materials are generally categorized into (1) hydrogen bonding, (2) ionic bonding, and (3) covalent bonding. Using these different strategies, we can tune the materials to have specific mechanical characteristics such as high strength, excellent strain resistance, or remarkable toughness. Among these design strategies, hydrogen bonding affords soft interfaces between the inorganic plates and the organic matrix. Covalent cross-linking forms chemical bonds between the inorganic plates and the organic matrix, leading to much stronger interfaces. The interfaces formed by ionic bonding are stronger than those formed by hydrogen bonding but weaker than those formed by covalent bonding. Biography Qunfeng Cheng is currently an Associate Professor at BeiHang University. He received his Ph.D. from Zhejiang University in 2008. He then worked in Tsinghua University and Florida State University as a Postdoctoral Research Fellow. In 2010, he joined BeiHang University. His research interests are focused on bioinspired, lightweight, and high performance nanocomposites. Biography Lei Jiang is a full professor at Institute of Chemistry, Chinese Academy of Sciences (ICCAS), and BeiHang University. He received his Ph.D. from Jilin University in 1994. He then worked as a postdoctoral fellow in Prof. Akira Fujishima’s group in Tokyo University. In 1996, he worked as a senior researcher in Kanagawa Academy of Sciences and Technology under Prof. Kazuhito Hashimoto. He joined ICCAS as part of the Hundred Talents Program in 1999. He was elected academician of Chinese Academy of Sciences in 2009 and the Academy of Sciences for the Developing World in 2012. His scientific interests are focused on bioinspired, smart, and multiscale interfacial (BSMI) materials. Biography Zhiyong Tang obtained his Ph.D. degree from Chinese Academy of Sciences in 1999 under the direction of Professor Erkang Wang. After finishing his postdoctoral training at both Swiss Federal Institute of Technology Zurich and University of Michigan, he came back to China and took a professor position at National Center for Nanoscience and Technology at the end of 2006. His main research interests are focused on preparation, assembly, and application of functional nanomaterials  |
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