...
首页> 外文期刊>Physical review >Small-angle x-ray scattering study of the aggregation of gold nanoparticles during formation at the toluene-water interface
【24h】

Small-angle x-ray scattering study of the aggregation of gold nanoparticles during formation at the toluene-water interface

机译:金纳米颗粒在甲苯-水界面形成过程中聚集体的小角度X射线散射研究

获取原文
获取原文并翻译 | 示例
           

摘要

We report the results of an in situ small-angle x-ray scattering (SAXS) study of the aggregation of gold nanoparticles formed by an interfacial reaction at the toluene-water interface. The SAXS data provide a direct evidence for aggregate formation of nanoparticles having 1.3 nm gold core and an organic shell that gives a core-core separation of about 2.5 nm. Furthermore, the nanoparticles do not occupy all the cites of 13-member cluster. This occupancy decreases with reaction time and indicate reorganization of the clusters that generates planner disklike structures. A gradual increase in fractal dimension from 1.82 to 2.05 also indicate compacti-fication of cluster aggregation with reaction time, the final exponent being close to 2 expected for disklike aggregates.
机译:我们报告的原位小角度X射线散射(SAXS)研究的金纳米粒子的聚集形成的甲苯-水界面的界面反应的结果。 SAXS数据提供了具有1.3 nm金核和有机壳的纳米颗粒聚集体形成的直接证据,该有机壳给出了约2.5 nm的核芯间距。此外,纳米颗粒并未占据13个成员簇的所有位置。该占用率随反应时间而降低,并指示生成计划程序盘状结构的群集的重组。分形维数从1.82逐渐增加到2.05也表明,随着反应时间的增长,团簇聚集得到了压缩,最终指数接近于盘状聚集体的2。

著录项

  • 来源
    《Physical review》 |2010年第11期|p.115415.1-115415.7|共7页
  • 作者单位

    Surface Physics Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700064, India S. N. Bose National Centre for Basic Sciences, JD-Block, Sec-3, Salt Lake, Kolkata 700098, India;

    Surface Physics Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700064, India International Center for Materials Science, Jawaharlal Nehru Center for Advanced Scientific Research,Jakkur P.O., Bangalore 560064, India;

    rnNational Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973-5000, USA;

    rnInternational Center for Materials Science, Jawaharlal Nehru Center for Advanced Scientific Research,Jakkur P.O., Bangalore 560064, India Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India;

    rnLPEC, Universita du Maine, UMR 6087 CNRS, Avenue O. Messiaen, 72085 Le Mans, France;

    rnInternational Center for Materials Science, Jawaharlal Nehru Center for Advanced Scientific Research,Jakkur P.O., Bangalore 560064, India Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    fractals; macroscopic aggregates (including diffusion-limited aggregates);

    机译:分形宏观聚集体(包括扩散受限聚集体);

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号