• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Nanoscale architecture of bimetallic hybrid Fe-Au nanostructures with and without 1,4-phenylene diisocyanide pre-functionalization
【24h】

Nanoscale architecture of bimetallic hybrid Fe-Au nanostructures with and without 1,4-phenylene diisocyanide pre-functionalization

机译：纳米金属杂交Fe-Au纳米结构的纳米级结构，无1,4-亚苯基二异氰化物预官能化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The nanoscale architecture of a hybrid material has been very important in deriving a new interesting synergic property. Here, we have demonstrated that the functionalization of Au by 1,4-phenylene diisocyanide (PDI) provides a new platform of fabricating smart hybrid materials by electrochemistry. Iron nanorice particles (Fe NrPs) have been electrochemically hybridized with bare and PDI-functionalized Au nanoisland (NI) templates. Their interfacial electronic structures and morphologies have been studied and compared with those of Au sputter-or electro-deposited on Fe NrPs without PDI pre-functionalization. The electrochemically prepared Fe NrP is found to consist of an Fe-FeO core-shell structure covered by thin Fe2O3 and/or FeOOH by using depth-profiling X-ray photoelectron spectroscopy (XPS). Remarkably, bare Au NIs supported on Si become aggregated to form bigger islands upon applying a potential. PDI functionalization of Au prevents such a potential-induced aggregation, thereby facilitating Fe NrPs to be deposited on top of the Au NI templates without translocating the Au NIs. No notable difference in the XPS features between Fe on Au with and without PDI-functionalization are found, with no evidence of interfacial Au-Fe alloy formation. For Au on Fe NrPs, the Au 4f XPS peak is shifted to a higher binding energy position with sputtering depth, suggesting the formation of cationic Au-O chemical bonding species at the interface.
机译：混合材料的纳米级结构已获得了新的有趣的协同性能而言非常重要。在这里，我们已经证明，Au中的由1,4-亚苯基diisocyanide官能（PDI）提供了通过电化学制造智能杂化材料的新的平台。铁nanorice颗粒（铁NRPS）已用裸和PDI官能化的Au nanoisland（NI）的模板被电化学杂交。进行了研究，并与金溅射或对Fe NRPS电沉积而不PDI预官能化相比，它们的界面的电子结构和形态。电化学制备的Fe NRP发现由覆盖由薄Fe2O3和/或的FeOOH通过使用深度剖析X射线光电子能谱（XPS）的Fe-FeO的核 - 壳结构的。值得注意的是，裸金NI的支持硅成为聚集形成在施加更大的潜力岛屿。的Au的PDI官能防止了这种潜在的诱导的聚集，从而促进铁NRPS被上的金NI模板顶部沉积而不易位在Au国家机构。铁之间的XPS无显着性差异展示了金有和没有PDI-功能化被发现，没有界面的Au-Fe合金形成的迹象。将Au对Fe NRPS，在Au 4f的XPS峰偏移到较高的结合能位置与溅射深度，这表明阳离子的Au-O的化学结合的物种的在界面处的形成。

著录项

  • 来源
    《RSC Advances》 |2015年第40期|共7页
  • 作者

    Sohn Youngku; Pradhan Debabrata; Kang Jung-Soo; Leung K. T.;

  • 作者单位

    Univ Waterloo WATLab Waterloo ON N2L 3G1 Canada;

    Univ Waterloo WATLab Waterloo ON N2L 3G1 Canada;

    Univ Waterloo WATLab Waterloo ON N2L 3G1 Canada;

    Univ Waterloo WATLab Waterloo ON N2L 3G1 Canada;

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

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