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首页> 外文期刊>RSC Advances >Molybdenum disulfide nanoflakes through Li-AHA assisted exfoliation in an aqueous medium
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Molybdenum disulfide nanoflakes through Li-AHA assisted exfoliation in an aqueous medium

机译：通过Li-Aha致硫化钼纳米薄膜在水性介质中辅助剥离

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摘要

Two dimensional materials are promising candidates for sensing, catalysis, and energy storage applications because of their high surface area and excellent electronic properties. Layered materials such as graphite, transition metal dichalcogenides (TMDs) and transition metal oxides (TMOs) can be a major source of two dimensional systems. However, the development of two dimensional systems from layered materials has been hindered by the lack of a proper exfoliation technique. We report the exfoliation of bulk MoS2 powder into few layered nanoflakes using lithium salt of 6-aminohexanoic acid (Li-AHA) in an aqueous dispersion. Li-AHA treated MoS2 was 'destacked' to form few layered nanoflakes due to the electrostatic repulsion. XRD analysis showed that the Li-AHA treatment resulted in the formation of highly crystalline MoS2 nanoflakes. Raman spectroscopic analysis indicated a shift in E(2)(1)g and A(1g) peaks suggesting the reduction in interlayer interactions, which in turn indicates exfoliation. Electron microscopic observations strongly suggested the formation of a few layered structure. These nanoflakes can be further incorporated into various polymer matrices to prepare composites with superior mechanical and electrical properties as compared to its bulk counterpart. The reported exfoliation technique is simple, effective and can be extended to exfoliate various transition metal dichalcogenides.
机译：由于其高表面积和优异的电子特性，二维材料是对传感，催化和能量存储应用的承诺候选者。诸如石墨，过渡金属二甲甲基化物（TMDS）和过渡金属氧化物（TMOS）的层状材料可以是二维系统的主要来源。然而，通过缺乏适当的剥离技术，已经阻碍了两维系统的发展。我们在水分散体中使用6-氨基己酸（Li-Aha）的锂盐将散装MOS2粉末的剥离块状纳米薄片中的少量分层纳米薄膜。 Li-Aha处理的MOS2由于静电排斥而形成少量分层纳米薄片。 XRD分析表明，Li-Aha处理导致高度结晶MOS2纳米薄片。拉曼光谱分析表明E（2）（1）克（1）克的偏移，A（1g）峰，表明层间相互作用的降低，这反过来表示去角质。电子显微镜观察强烈建议形成几种层状结构。这些纳米薄饼可以进一步掺入各种聚合物基质中，以制备具有优异的机械和电性能的复合材料，与其体对应物相比。报告的剥离技术简单，有效，并且可以延伸以剥离各种过渡金属二甲基甲基化物。

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  • 来源
    《RSC Advances》 |2016年第26期|共8页
  • 作者

    Bindhu B.; Sharu B. K.; Gopika M. S.; Praseetha P. K.; Veluraja K.;

  • 作者单位

    Noorul Islam Ctr Higher Educ Dept Phys Kumaracoil 629180 Tamil Nadu India;

    VIT Univ Sch Mech &

    Bldg Sci Vellore 632014 Tamil Nadu India;

    Noorul Islam Ctr Higher Educ Dept Phys Kumaracoil 629180 Tamil Nadu India;

    Noorul Islam Ctr Higher Educ Dept Nanotechnol Kumaracoil 629180 Tamil Nadu India;

    VIT Univ Sch Adv Sci Vellore 632014 Tamil Nadu India;

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  • 正文语种 eng
  • 中图分类 化学;
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