剥层重堆法制备纳米二硫化钼夹层化合物

用纳米二硫化钼与正丁基锂反应，反应物经水处理后，得到纳米二硫化钼剥层悬浮液，该悬浮液在一定条件下能发生重堆积，用XRD对重堆积产物进行了研究．结果显示，酸性条件下重堆积产物的XRD衍射模式中，没有出现层状结构的（001）衍射峰和混杂的（hk1）衍射峰，只有（hk0）衍射峰，表明酸性条件下的重堆积不是通常的层叠方式堆积，而是一种随机的堆积过程，得到的重堆积产物保持了纳米二硫化钼单分子层的结构特征；然而在NiSO4或十六烷基三甲基澳化铵溶液中，重堆积产物显示出明显的（001）衍射峰，表明Ni^2＋与季铵离子能促使单层纳米二硫化钼以层叠方式堆积，并形成夹层化合物．

Preparation of Nano-MoS2 Intercalation Compound by Exfoliation-restacking Process

The reaction product of nano-MoS2 and n-butyl lithum is treated by water leading to a stable suspension of exfoliated nano-MoS2. The obtained exfoliated suspension is restacked under proper conditions, and then the restacked product is characterized by X-ray diffraction （XRD）. The results show that the restacked nano-MoS2 presents typical noncrystalline characters and no （001） and mixed （hk1） lines in its XRD patterns, which is different from the restacked micro-MoS2 reported in the lite ratures. This indicates that nano-MoS2 monolayers do not restack regularly along the direction vertical to nano-MoS2 layers. However, Ni^2＋ or cetyl trimithyl ammonium bromide contributed to the restacking of nano-MoS2 monolayers regularly along the vertical direction of layers, resulting in the intercalation compound of nano-MoS2.