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Bioinspired Nanocomposites: Ordered 2D Materials Within a 3D Lattice

机译：受生物启发的纳米复合材料：3D晶格内的有序2D材料

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摘要

Composites, materials composed of two or more materials-metallic, organic, or inorganic-usually exhibit the combined physical properties of their component materials. The result is a material that is superior to conventional monolithic materials. Advanced composites are used in a variety of industrial applications and therefore attract much scientific interest. Here the formation of novel carbon-based nanocomposites is described via incorporation of graphene oxide (GO) into the crystal lattice of single crystals of calcite. Incorporation of a 2D organic material into single-crystal lattices has never before been reported. To characterize the resulting nanocomposites, high-resolution synchrotron powder X-ray diffraction, electron microscopy, transmission electron microscopy, fluorescence microscopy and nanoindentation tests are employed. A detailed analysis reveals a layered distribution of GO sheets incorporated within the calcite host. Moreover, the optical and mechanical properties of the calcite host are altered when a carbon-based nanomaterial is introduced into its lattice. Compared to pure calcite, the composite GO/calcite crystals exhibits lower elastic modulus and higher hardness. The results of this study show that the incorporation of a 2D material within a 3D crystal lattice is not only feasible but also can lead to the formation of hybrid crystals exhibiting new properties.
机译：通常，由两种或多种材料（金属，有机或无机）组成的复合材料具有其组成材料的综合物理性能。结果是一种优于常规整体材料的材料。先进的复合材料用于各种工业应用，因此吸引了许多科学兴趣。在这里，通过将氧化石墨烯（GO）掺入方解石单晶的晶格中来描述新型碳基纳米复合材料的形成。从未有过将2D有机材料掺入单晶格的报道。为了表征所得的纳米复合材料，采用了高分辨率同步加速器粉末X射线衍射，电子显微镜，透射电子显微镜，荧光显微镜和纳米压痕测试。详细的分析显示，方解石主体中掺入的GO片层状分布。此外，当将碳基纳米材料引入其方格中时，方解石主体的光学和机械性能会发生变化。与纯方解石相比，GO /方解石复合晶体具有较低的弹性模量和较高的硬度。这项研究的结果表明，将2D材料掺入3D晶格中不仅可行，而且还可以导致形成具有新特性的杂化晶体。

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  • 来源
    《Advanced Functional Materials》 |2016年第30期|5569-5575|共7页
  • 作者

    Di Giosia Matteo; Polishchuk Iryna; Weber Eva; Fermani Simona; Pasquini Luca; Pugno Nicola M.; Zerbetto Francesco; Montalti Marco; Calvaresi Matteo; Falini Giuseppe; Pokroy Boaz;

  • 作者单位

    Univ Bologna, Alma Mater Studiorum, Dipartimento Chim Giacomo Ciamician, Via F Selmi 2, I-40126 Bologna, Italy;

    Technion Israel Inst Technol, Dept Mat Sci & Engn, IL-32000 Haifa, Israel|Technion Israel Inst Technol, Russell Berrie Nanotechnol Inst, IL-32000 Haifa, Israel;

    Technion Israel Inst Technol, Dept Mat Sci & Engn, IL-32000 Haifa, Israel|Technion Israel Inst Technol, Russell Berrie Nanotechnol Inst, IL-32000 Haifa, Israel;

    Univ Bologna, Alma Mater Studiorum, Dipartimento Chim Giacomo Ciamician, Via F Selmi 2, I-40126 Bologna, Italy;

    Univ Bologna, Alma Mater Studiorum, Dipartimento Fis & Astron, Viale Berti Pichat 6-2, I-40126 Bologna, Italy;

    Univ Trento, Dept Civil Environm & Mech Engn, Lab Bioinspired & Graphene Nanomech, Via Mesiano 77, I-38123 Trento, Italy|Fdn Bruno Kessler, Ctr Mat & Microsyst, Via Sommar 18, I-38123 Povo, Italy|Queen Mary Univ London, Sch Engn & Mat Sci, Mile End Rd, London E1 4NS, England;

    Univ Bologna, Alma Mater Studiorum, Dipartimento Chim Giacomo Ciamician, Via F Selmi 2, I-40126 Bologna, Italy;

    Univ Bologna, Alma Mater Studiorum, Dipartimento Chim Giacomo Ciamician, Via F Selmi 2, I-40126 Bologna, Italy;

    Univ Bologna, Alma Mater Studiorum, Dipartimento Chim Giacomo Ciamician, Via F Selmi 2, I-40126 Bologna, Italy;

    Univ Bologna, Alma Mater Studiorum, Dipartimento Chim Giacomo Ciamician, Via F Selmi 2, I-40126 Bologna, Italy;

    Technion Israel Inst Technol, Dept Mat Sci & Engn, IL-32000 Haifa, Israel|Technion Israel Inst Technol, Russell Berrie Nanotechnol Inst, IL-32000 Haifa, Israel;

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