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化学学报
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化学学报 ›› 2007, Vol. 65 ›› Issue (12): 1155-1160. 上一篇    下一篇

研究论文

氧化锌纳米线自组装定向生长动力学研究

贺英*,1, 王均安2, 桑文斌3, 高利聪1, 周利寅1   

  1. (1上海大学材料科学与工程学院高分子材料系 上海 200072)
    (2上海大学微结构研究重点实验室 上海 200444)
    (3上海大学材料科学与工程学院电子信息材料系 上海 200072)
  • 投稿日期:2006-08-24 修回日期:2007-01-12 发布日期:2007-06-28
  • 通讯作者: 贺英

Kinetics of ZnO Nanowires Self-assembling Oriented Growth

HE Ying*,1; WANG Jun-An2; SANG Wen-Bin3; GAO Li-Cong1; ZHOU Li-Yin1   

  1. (1 Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200072)
    (2 Key Laboratory of Advanced Microanalysis, Shanghai University, Shanghai 200444)
    (3 Department of Electronic Information Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200072)
  • Received:2006-08-24 Revised:2007-01-12 Published:2007-06-28
  • Contact: HE Ying

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被引次数

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研究了以极性高分子(如聚丙烯酰胺)长分子链作为自组装网络, 利用高分子软模板控制ZnO纳米点成核和ZnO纳米线定向生长, 从而使ZnO纳米线在半导体硅衬底上自组装生长的过程; 采用差示扫描量热法(DSC)测试了高分子络合-烧结法制备ZnO纳米线的结晶曲线, 对其结晶动力学进行了研究, 推导出结晶动力学方程为: 1－Xt＝exp(－7.475×10－2t1.9); 并利用热重(TG)测试结果, 通过热分解反应, 导出了反应动力学方程: dα/dT＝(3.76×1023/Φ)e－21340.8/T(1－α) 2.8, 从而得到了化学反应速度随时间、浓度和温度变化的关系, 并用结果解释了实验现象.

关键词: 氧化锌纳米线, 自组装, 高分子软模板, 动力学, 定向生长

Zinc oxide (ZnO) nanowires were grown on silicon substrate by using polar polymer (such as PAM) long-chain as self-assembling grid backbone via polymer soft-template controlling nucleation of ZnO nanodots and oriented growth of ZnO nanowires. The kinetics of the crystallization of ZnO nanowires and the thermal decomposition of the complex PAM-Zn2＋ during preparation were investigated by means of differential scanning calorimetry (DSC) and thermogravimetry (TG), and the relationship between the reaction rate and time, concentration and temperature were obtained, 1－Xt＝exp(－7.475×10－2t1.9) and dα/dT＝(3.76×1023/Φ)e－21340.8/T(1－α)2.8. The calculation results are in good accordance with the experiments. It is found that one dimensional wire-like growth model is in favour of the nucleation and crystal growth behavior of ZnO nanowires, and the ZnO nanowires possess perfect crystal structure.

Key words: ZnO nanowire, self-assembling, polymer soft-template, kinetics, oriented growth