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以硝酸铅和硫代乙酰胺为前体,十二烷基苯磺酸钠(SDBS)扮演了前体和表面活性剂的双重角色,制备出硫化铅纳米带。采用透射电子显微镜、X射线衍射和光致发光对所制备的纳米带进行了表征。结果表明,中间产物PbSO4在水热条件下对PbS纳米带的进一步形成主要起到模板作用。进一步考察了纳米带形成机理,结果表明,中间产物PbSO4对表面活性剂是有制约性的,而当改变中间产物保持条件不变的情况下,模板效应失控,只能得到不规则的微晶体。实验结果表明,制备硫化铅纳米带反应速度较为缓慢,易于控制,为制备不同形貌纳米带提供了一种有效方法。
Lead nitrate and thioacetamide as precursors, sodium dodecyl benzene sulfonate (SDBS) played the dual role of precursor and surfactant to prepare lead sulfide nanoribbons. The prepared nanoribbons were characterized by transmission electron microscopy, X-ray diffraction and photoluminescence. The results showed that the intermediate product PbSO4 mainly played a template role in the further formation of PbS nanoribbons under hydrothermal conditions. The formation mechanism of nanobelt was further investigated. The results showed that the PbSO4 intermediate had a restraining effect on the surfactant. However, the template effect was out of control and the irregular microcrystal . The experimental results show that the preparation of lead sulfide nanoribbons is slower and easier to control, providing an effective method for preparing nanobelts with different morphologies.