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简易、可控制备硫化铅纳米带

马友美,杨小平*,贾晓龙,国丽娟   

  1. (北京化工大学材料科学与工程学院，有机无机复合材料国家重点实验室 北京 100039)
  • 收稿日期:2011-08-30 修回日期:2011-10-12 出版日期:2012-05-10 发布日期:2012-05-10
  • 通讯作者: YANG Xiaoping,professor; Tel:010-64435034; Fax:010-64412084; E-mail:yangxp@mail.buct.edu.cn; Research Interests：modification of nanomaterials and carbon nanotubes
  • 作者简介:北京化工大学 有机无机复合材料国家重点实验室 研究生 100029

A Simple and Controllable Preparation of PbS Nanobelts

MA Youmei, YANG Xiaoping*, JIA Xiaolong, GUO Lijuan   

  1. (State Key Laboratory of Organic-Inorganic Composites,College of Materials Science
    and Engineering,Beijing University of Chemical Technology,Beijing 100039,China)
  • Received:2011-08-30 Revised:2011-10-12 Published:2012-05-10 Online:2012-05-10
  • Contact: YANG Xiaoping
  • About author:State Key Laboratory of Organic-Inorganic Composites,College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,P.R.China

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摘要： 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。

关键词: 微晶体, 模板效应, 形貌控制, 硫化铅纳米带

Abstract: PbS nanobelts were synthesized by a facile hydrothermal method using lead nitrate, thioacetamide and dodecyl benzene sulfonate(SDBS) as raw materials. SDBS played a dual role as both the starting material and surfactant in the reaction. The as-prepared nanobelts were characterized by transmission electron microscopy and X-ray diffraction. The photoluminescence property of the nanobelts was also studied. It was concluded that the intermediate PbSO4 could act as a template for the growth of PbS nanobelts under hydrothermal conditions. The formation mechanism of nanobelts was further investigated. The results indicated that the intermediate PbSO4 could paly restriction effect on the surfactant(SDBS). When PbSO4 was replaced by other lead composite, the surfactant would lose its role and irregular micro-crystals were obtained consequently. The formation of nanobelts was readily controlled under a slow reaction speed. The result presented here may open an efficient way to synthesizing nanobelts with different morphologies.

Key words: micro-crystals, template effect, morphology control, lead sulfide nanobelts

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