高等学校化学学报

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (12): 2319.

• 研究快报 • 上一篇    下一篇

银纳米树的选择性沉积及其催化性质

王皓南1,齐殿鹏2,赵晓杰2,马任平2,于景生2,吕男2   

  1. 1. 吉林大学环境与资源学院, 长春 130012
    2. 吉林大学超分子结构与材料国家重点实验室, 长春 130012
  • 收稿日期:2010-08-13 修回日期:2010-10-12 出版日期:2010-12-10 发布日期:2010-12-06
  • 通讯作者: 吕男 E-mail:luenan@jlu.edu.cn
  • 作者简介:吕男, 女, 博士, 教授, 博士生导师, 主要从事表面图案化与界面诱导组装的研究. E-mail: luenan@jlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号： 20773052)资助.

Selective Deposition of Silver Dendritic Structures and Its Catalytic Property

WANG HaoNan1,QI DianPeng2,ZHAO XiaoJie2,MA RenPing2,YU JingSheng2,Lü Nan2*   

  1. 1. College of Environmental and Resource Sciences, Jilin University, Changchun 130012, China
    2. State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China
  • Received:2010-08-13 Revised:2010-10-12 Online:2010-12-10 Published:2010-12-06
  • Contact: Lü Nan E-mail:luenan@jlu.edu.cn
  • About author:吕男, 女, 博士, 教授, 博士生导师, 主要从事表面图案化与界面诱导组装的研究. E-mail: luenan@jlu.edu.cn
  • Supported by:

    国家自然科学基金(批准号： 20773052)资助.

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被引次数

5

摘要： 通过KOH各向异性刻蚀在硅片表面制备硅锥结构，以无电沉积的方式在硅锥表面选择性沉积了银纳米树，扫描电镜（SEM）照片清楚的显示出所制备银纳米树的根、茎、叶。用X射线衍射（XRD）对所制备的银纳米树进行分析，其峰的位置与JCPDS 卡上数据一致(JCPDS No. 420783)。以自组装局部原电池模型和扩散限制机制为基础，阐明了银纳米树的形成机理；并说明了尖端效应是实现银纳米树的选择性沉积的根本原因。所制备的银纳米树在硼氢化钠还原硝基苯胺的过程中起到了很好的催化作用。这种银纳米树结构可能在将来的自组装微型功能化设备中得到广泛应用。

关键词: 银纳米树, 选择性无电沉积, 催化性质

Abstract: Silver dendritic structures were electroless deposited on the top of silicon pyramids which were obtained by anisotropic etch in KOH solution. More details of the silver dendritic structures were observed by scanning electronic microscopy (SEM) and X-ray diffraction (XRD) were performed to further investigate the silver dendritic structures; the peaks observed are consistent with the JCPDS card (JCPDS No. 420783). Furthermore, the formation mechanism of silver dendritic structures has been clarified base on the model of galvanic cell and the diffusion-limited aggregation (DLA). The results show that the effect of point plays an important role in the selective deposition of silver dendritic structures. The silver dendritic structures can be used for catalytic reduction of 4-nitroaniline and this structures might be used for the micro-functional devices in the future.

Key words: silver dendritic structures, selective electroless deposition, catalytic property

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