摘要
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(00l)衍射峰和混杂的(hkl)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或十六烷基三甲基溴化铵溶液中,重堆积产物显示出明显的(00l)衍射峰,表明Ni2+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.
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.
出处
《合肥学院学报（自然科学版）》
2008年第1期45-48,共4页
Journal of Hefei University :Natural Sciences
基金
安徽省高等学校青年教师科研计划基金项目(2007JQ1149)
关键词
纳米二硫化钼
单分子层悬浮液
剥层重堆法
nano-MoS2
monolayer suspension
exfoliation-and-restacking technology
