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Preparation and Properties of CdS/Au Composite Nanorods and Hollow Au Tubes
  • ISSN号：1001-6538
  • 期刊名称：科学通报(英文版)
  • 时间：0
  • 页码：921-926
  • 语言：中文
  • 分类：TN304.25[电子电信—物理电子学] TB383[一般工业技术—材料科学与工程]
  • 作者机构：[1]Beijing National Laboratory for Molecular Sciences, Key Laboratory for the Physics and Chemistry of Nanodevices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
  • 相关基金：This work was supported by the National Natural Science Foundation of China （Grant No. 90406018） and Ministry of Science and Technology of China （Grant Nos. 2006CBON0403 and 2007CB936202）.
  • 相关项目：基于非VIII族金属催化剂的单壁碳纳米管制备
作者： LI Yan|ZHOU WeiWei |YANG ZhaoHui,|CHU HaiBin|JIN Zhong|
关键词： CDS纳米棒, 金纳米粒子, 纳米复合材料, 硫化镉, 空心, 表面等离子体共振, 光电子能谱, 性能, Au nano particles, CdS nanostructures, energy transfer
中文摘要：

1-dimensional (1D ) 金属半导体 nano 规模合成上层建筑基于 Au， nanoparticles 和 CdS nanorods 被准备。CdS nanorods 的外部表面预先与 mercapto-ethylamine (MEA ) 被修改。在 MEA 的帮助下，稠密、一致的 Au nanoparticles 直在 AuCl4 的 situ 化学药品减小被扔到 CdS nanorods 的外部墙上吗？离子。那些 Au nanoparticles 导致了进一步无电的免职和 Au 的连续的层在 CdS nanorods 上被形成。在内部 CdS 核心被 HCl 蚀刻以后，稳定的空 Au 试管被获得。紫外力， FL， XPS， EDX， TEM 和 SEM 大小被执行描绘生产材料。在 CdS-nanorod/Au-nanoparticle 混合上层建筑熄灭 CdS 的缺点排放被检测，它从 CdS 的激子被归功于到精力转移到 Au 的表面血浆回声水平。

英文摘要：

1-dimensional （1D） metal-semiconductor nano-scale composite superstructures based on Au nanoparticles and CdS nanorods were prepared. The outer surface of CdS nanorods was modified with mercapto-ethylamine （MEA） in advance. With the aid of MEA, dense and uniform Au nanoparticles were deposited onto the external wall of CdS nanorods through in situ chemical reduction of AuCl4^- ions. Those Au nanoparticles induced further electroless deposition and a continuous layer of Au was formed on CdS nanorods. Stable hollow Au tubes were obtained after the inner CdS cores were etched by HCl. UV-Vis, FL, XPS, EDX, TEM and SEM measurements were carried out to characterize the produced materials. The quenching of the defect emission of CdS in CdS-nanorod/Au-nanoparticle hybrid superstructures was detected, which was ascribed to the energy transfer from the exciton of CdS to surface plasma resonance level of Au.

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