【摘 要】
：
Graphene,a unique two-dimensional nanomaterial with excellent conductivity and mechanical properties,has been intensively investigated to assemble into the high-performance layered nanocomposites thro
【机 构】
：
School of Chemistry and Environment,Beihang University,Beijing 100191,P.R.China
【出 处】
：
The 6th International Conference on Nanoscience and Technolo
论文部分内容阅读
Graphene,a unique two-dimensional nanomaterial with excellent conductivity and mechanical properties,has been intensively investigated to assemble into the high-performance layered nanocomposites through some interface modification strategies,such as hydrogen bonding,ionic bridging,π-π interaction and covalent cross-linking.However,it still remain a challenge to enhance the tensile strength and toughness simultaneously through such single interface interaction,thats to say,the improved strength usually is at expense of decreasing toughness.Fortunately,natural nacre has provided the "gold standard" for strength and toughness,considering the delicate interface synergy within the "brick" and "motar" [1].Here,we successfully fabricated the strong,tough,conductive binary artificial nacre based on graphene oxide(as "brick")and chitosan(as "motar")through synergistic interaction of covalent and hydrogen bonding.The distinct mechanism for covalent cross-linking of graphene oxide with chitosan was also well demonstrated.Tensile strength and toughness was 4-and 10-times higher,respectively,than that of natural nacre.This bioinspired artificial nacre also exhibited high electrical conductivity,which has promising applications in aerospace,flexible supercapacitor electrodes,artificial muscle,and tissue engineering.The use of synergistic interactions is a strategy that opens a new avenue for development of high-performance,integrated,bioinspired nanocomposites.
其他文献
There is a growing effort in the scientific community to design and fabricate self-propelled artificial nanomotors because they have potentials in the field of directed drug delivery,roving sensors,is
The field of nanotechnology is increasingly leading to the elaboration of multifunctional materials for various applications(electronics,photonics,catalysis,biomedicine,sensing...).Owing to their very
The modular assembly of plasmonic nanoparticles enables the creation of a new class of two-dimensional nanoparticle sheets with novel optical signatures.Despite exciting advances,undeveloped issues st
There have been widespread interests in the mimic of the natural light-harvesting process due to its importance in natural photosynthesis and potential applications in various fields such as solar cel
Many natural species are created through self-assembly of heterogeneous nanoscale units with fine-tuned adjustment of the overall force balance to stabilize target motifs.In the laboratory,much progre
Though the molecular diffusion within Extracellular Space(ECS)in brain tissues is of paramount importance to the realization of biological functions,the topic of in-vivo extracullular diffusion is in
A facile process for preparing molybdenum-oxide-based composite(MOBC)from peroxomolybdate solutions was proposed in this paper.The morphology of the MOBC could be effectively regulated by assembling o
Photoelectrochemically splitting water to hydrogen(H2)and oxygen(O2)driven by solar has been attracted more attention because it was considered a potential solution for supplying the worlds growing po
Additive direct–write manufacturing has become an integrated part in science and technology over recent years.The tremendous advantage of such methods is the ability to deposit complex structures in a
Manipulating the growth rate of different crystal planes [1] of monometal nanocrystals is a key to the fabrication of curved faces rather than flat surfaces.The control of curved structure of bimetals