中文摘要：氧化石墨烯与丝状噬菌体M13结合，通过自组装形成三维多功能多孔结构，应用潜力很大。本研究对这种多孔复合材料进行了压力下的拉曼光谱分析，以了解其基本结构。结果表明，在压力较低时，随着压力的增加氧化石墨烯的sp(2)键几乎没有硬化，表明水在石墨烯层之间的插层行为很复杂，这意味着密闭空间中的水会对容纳它的纳米结构产生重大影响；我们在氧化石墨烯和M13的自组装过程中引入碳纳米管，观察到类似的多孔宏观结构。然而，在碳纳米管存在的情况下，与在石墨中一样，压力直接传递到氧化石墨烯的sp(2)键上。在10v的偏置电压下，含碳纳米管复合材料的导电性提高了约30倍。因此，这种多孔结构在需要良好导电性的领域如传感器和电池中有潜在的应用前景。
外文摘要：Graphene oxide, integrated with the filamentous bacteriophage M13, forms a 3D large-scale multifunctional porous structure by self-assembly, with considerable potential for applications. We performed Raman spectroscopy under pressure on this porous composite to understand its fundamental mechanics. The results show that at low applied pressure, the sp(2) bonds of graphene oxide stiffen very little with increasing pressure, suggesting a complicated behaviour of water intercalated between the graphene layers. The key message of this paper is that water in a confined space can have a significant impact on the nanostructure that hosts it. We introduced carbon nanotubes during the self-assembly of graphene oxide and M13, and a similar porous macro-structure was observed. However, in the presence of carbon nanotubes, pressure is transmitted to the sp(2) bonds of graphene oxide straightforwardly as in graphite. The electrical conductivity of the composite containing carbon nanotubes is improved by about 30 times at a bias voltage of 10 V. This observation suggests that the porous structure has potential in applications where good electrical conductivity is desired, such as sensors and batteries.
作者：Sun, YW；Assaretti, PP；Hernandez, I；Gonzalez, J；Liu, W；Rodriguez, F；Dunstan, DJ；Oppenheimer, PG；Humphreys, CJ
作者单位：Queen Mary Univ London；Univ Birmingham；Univ Cantabria；Zhejiang Univ
期刊名称：SCIENTIFIC REPORTS
期刊影响因子：3.998
出版年份：2020
出版刊次：1
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