高等学校化学学报

高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (8): 1405.

• 研究论文 • 上一篇    下一篇

有机分子CTAB对银纳米颗粒形貌的影响

吴青松1, 赵岩2, 张彩碚1   

  1. 1. 东北大学理学院, 沈阳110004;
    2. 中国科学院金属究研究所, 沈阳110016
  • 收稿日期:2004-10-27 出版日期:2005-08-10 发布日期:2005-08-10
  • 通讯作者: 张彩碚(1940年出生),女,教授,博士生导师,从事材料物理与化学研究.E-mail:cbzhang4616@yahoo.com.cn E-mail:cbzhang4616@yahoo.com.cn
  • 基金资助:

    国家自然科学基金(批准号:50202014);国家高技术研究发展计划“八六三”项目(批准号:2002AA325070)资助.

Effect of Organic Molecule CTAB on Morphologies of Silver Nanoparticles

WU Qing-Song1, ZHAO Yan2, ZHANG Cai-Bei1   

  1. 1. College of Sciences, Northeastern University, Shenyang, 110004, China;
    2. Institute of Met al Research, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2004-10-27 Online:2005-08-10 Published:2005-08-10

PDF (PC)

被引次数

25

摘要： 报道了一种有效调节银纳米颗粒形貌的特殊方法.在不同浓度的CTAB有机分子作用下,片状三角形银纳米颗粒形貌发生改变,形成圆形和纺锤形等特殊形貌的银纳米片,研究了CTAB浓度对银纳米颗粒形貌的影响,从实验结果分析了银纳米颗粒形貌发生改变的主要因素.

关键词: 银纳米颗粒, 三角形, 圆片形, 纺锤形, CTAB

Abstract: We reported on the dramatic chemical reshaping of silver nanoparticles upon exposure to cetylrimethylammonium bromide(CTAB) in aqueous solutions. In the presence of concentrated CTAB, the triangular silver nanoplates were observed to undergo a morphological change from truncated triangular, elliptic nanoplates to circular nanoplates. When dilute CTAB was employed, the triangular silver nanoplates were transformed into spindle silver nanoplates. Such transfigurations of silver nanoparticles were related to the concentration of bromide ions and organic groups of CTAB in the solutions. By changing the shape of silver nanopartilces their corresponding optical properties were tuned accordingly.

Key words: Silver nanoparticles, Triangle, Circularity, Spindle, Centyltrimethyl ammoniumbromide(CTAB)

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