高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (9): 1871.doi: 10.7503/cjcu20140311

• 研究论文: 无机化学 • 上一篇    下一篇

两种不同Pb源对PbSe纳米晶生长的影响

李晓腾1, 王英楠1(), 林奥雷1,2()   

  1. 1. 吉林大学超硬材料国家重点实验室 长春130012
    2. 先进技术研究院, 长春130012
  • 收稿日期:2014-04-04 出版日期:2014-09-10 发布日期:2019-08-01
  • 作者简介:联系人简介: 王英楠, 男, 博士, 副教授, 主要从事高压物理和纳米材料研究. E-mail: ynwang@jlu.edu.cn。林奥雷, 男, 博士, 副研究员, 主要从事高压物理和纳米材料研究. E-mail: linal@jlu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 51102108, 51202086, 51025206)和国家博士后科学基金(批准号: 2012M510876, 2013T60326)资助

Influence of Two Different Lead Sources on the Growth of PbSe Nanocrystals

LI Xiaoteng1, WANG Yingnan1,*(), LIN Aolei1,2,*()   

  1. 1. State Key Laboratory of Superhard Materials,Changchun 130012, China
    2. Institute of Advanced Technology,Jilin University, Changchun 130012, China
  • Received:2014-04-04 Online:2014-09-10 Published:2019-08-01
  • Contact: WANG Yingnan,LIN Aolei E-mail:ynwang@jlu.edu.cn;linal@jlu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.51102108, 51202086, 51025206) and the Science Foundation for Post-doctoral of China(Nos.2012M510876, 2013T60326)

摘要:

采用有机相合成法, 分别以PbO和醋酸铅[Pb(Ac)2]作为铅源, 研究了在不同反应温度和反应时间下, 不同铅源对PbSe纳米晶生长的影响. 实验结果表明, 以PbO作为铅源, 油酸(OA)作为配体时, 在不同的反应温度下得到了球形PbSe纳米晶和截角八面体PbSe纳米晶; 选择Pb(Ac)2作为铅源时, 在不同的温度下得到了PbSe纳米花和PbSe纳米星. 选择不同铅源得到的PbSe纳米晶形貌完全不同, 这主要是由于醋酸根的引入产生了不同的空间位阻, 引起纳米晶导向吸附并形成纳米花. 而随着反应温度的升高和反应时间的延长, 这些不同形貌的PbSe纳米晶最终会演变成纳米立方块, 这主要是由PbSe的晶体特性决定的.

关键词: 氧化铅, 醋酸铅, 硒化铅纳米晶, 形貌

Abstract:

Under different reaction temperature and reaction time, we studied the influence of PbO and Pb(Ac)2 as lead sources on the growth of PbSe nanocrystals, respectively. Experimental results indicated that when we used PbO as a lead source, OA as the ligand, monodispersed spherical and truncated octahedral PbSe nanocrystals could be obtained at different reaction temperatures. In contrast, when we used Pb(Ac)2 as the lead source, PbSe nanoflowers and nanostars could be obtained at different reaction temperatures. Different PbSe morphologies could be obtained when we chose different lead sources, which was attributed to different steric hindrance caused by different lengths of capping ligands. However, upon going through a high reaction temperature and a long reaction time, all these diverse morphologies of PbSe nanocrystals could evolve into cubic-like nanocrystals, which is determined by the crystal habit of PbSe.

Key words: PbO, Pb(Ac)2, PbSe nanocrystal, Morphology

中图分类号: 

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