Robust bioinspired graphene-based nanocomposites via synergistic toughening of zinc ions and covalent bonding
Robust bioinspired graphene-based nanocomposites via synergistic toughening of zinc ions and covalent bonding
复制标题
通过锌离子和共价键的协同增韧获得坚固的仿生石墨烯基纳米复合材料
DOI：
10.1039/c6ta06893f
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发表时间：
2016-01-01
影响因子：
11.9
通讯作者：
Cheng, Qunfeng
中科院分区：
文献类型：
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作者：
Gong, Shanshan;Jiang, Lei;Cheng, Qunfeng
石墨烯基纳米复合材料在柔性、可穿戴、智能等领域具有广阔的应用前景。但是，通过具有成本效益的氧化石墨烯（GO）纳米片构建高性能的宏观石墨烯基纳米复合材料以用于实际应用仍然是一个很大的挑战。受到珍珠层的分层结构和界面相互作用的启发，我们通过协同界面相互作用展示了稳健的石墨烯基纳米复合材料，其通过二价锌离子（Zn 2+）和具有GO纳米片的10，12-二十五烷二炔-1-醇（PCDO）的线性分子构建。协同的界面相互作用导致综合的高强度、韧性和疲劳寿命。此外，所得的生物启发石墨烯基纳米复合材料（BGBN）也具有高导电性。这种BGBN的优异性能使其有望应用于航空航天、超级电容器柔性电极和其他智能设备。离子键和共价键的协同界面相互作用的展示也为未来构建坚固的石墨烯基纳米复合材料提供了有效的方法。
Robust graphene-based nanocomposites show promising applications in fields of flexible, wearable and intelligent devices. But, it is still a big challenge to construct high performance macroscopic graphene-based nanocomposites for practical application through cost-efficient graphene oxide (GO) nanosheets. Inspired by the hierarchical layered structure and interfacial interactions of nacre, we demonstrated robust graphene-based nanocomposites via synergistic interfacial interactions, which are constructed via divalent ions of zinc (Zn2+), and linear molecules of 10,12-pentacosadiyn-1-ol (PCDO) with GO nanosheets. The synergistic interfacial interactions result in integrated high strength, toughness and fatigue life. Furthermore, the resultant bioinspired graphene-based nanocomposites (BGBNs) also possess high electrical conductivity. The extraordinary performance allows this kind of BGBN to be potentially utilized in aerospace, flexible electrodes of supercapacitors and other intelligent devices. The demonstration of synergistic interfacial interactions of ionic and covalent bonding also supplies an effective approach for building robust graphene-based nanocomposites in the future.