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由于MoS_2纳米片具有许多优异的特性,逐渐受到研究者的重视。以Ag纳米粒子分散液和MoS_2纳米片悬浊液为前驱物,在室温下将其充分混合、搅拌和放置,制得了由Ag连接的MoS_2多孔复合材料(Ag-MoS_2)。采用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、拉曼光谱及比表面积测试等各种测试技术,对该材料进行了系统表征。结果表明,MoS_2纳米片较容易与Ag纳米粒子相互复合,形成三维多孔无机纳米复合材料。与由MoS_2纳米片所形成的多孔材料相比,该复合材料具有相对更大的比表面积和孔体积,其值分别为18.7 m~2·g~(-1)和0.129 m~3·g~(-1);由于在MoS_2纳米片中加入Ag纳米粒子,其比表面积和孔体积分别增大了34倍和62倍。这种材料由于在孔道内含有大量S原子,因而较易吸附极性有机分子和过渡金属离子。在对罗丹明B和Cu~(2+)离子的吸附测试结果证实,Ag-MoS_2块材的比容量分别为0.755和0.699 g·g~(-1),具有较好的吸附能力。
Due to the many excellent properties of MoS 2 nanosheets, researchers are paying more and more attention to them. The Ag nano-porous composite (Ag-MoS 2) was obtained by mixing Ag nano-particle dispersion and MoS 2 nanosheet suspension as precursors at room temperature, mixing, stirring and placing. The materials were systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy and specific surface area measurements. The results show that the MoS_2 nanosheets can easily combine with Ag nanoparticles to form three-dimensional porous inorganic nanocomposites. Compared with porous materials composed of MoS 2 nanosheets, the composites have relatively larger specific surface area and pore volume, with the values of 18.7 m 2 · g -1 and 0.129 m -3 · g -1, respectively. (-1). Due to the addition of Ag nanoparticles into MoS_2 nanosheets, the specific surface area and pore volume increased 34- and 62-fold, respectively. This material due to the channel contains a large number of S atoms, which are more easily adsorbed polar organic molecules and transition metal ions. The results of adsorption tests on rhodamine B and Cu 2+ show that the specific capacity of Ag-MoS 2 block is 0.755 and 0.699 g · g -1, respectively, which shows good adsorption capacity.