金属纳米颗粒-碳纳米管复合材料在液/液界面的组装

Assembly of metal nanoparticle-carbon nanotube composite materials at the liquid/liquid interface.

作者信息

Lee Kang Yeol, Kim Minjung, Hahn Joeoong, Suh Jung Sang, Lee Inhyung, Kim Kwan, Han Sang Woo

机构信息

Nanomaterials Laboratory, Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 660-701, Korea.

出版信息

Langmuir. 2006 Feb 14;22(4):1817-21. doi: 10.1021/la052435b.

DOI:10.1021/la052435b

PMID:16460112

Abstract

Carbon nanotubes (CNTs)-mediated self-assembly of metal (Au and Ag) nanoparticles at the liquid/liquid interface in the form of a stable nanocomposite film is reported. The metallic luster results from the electronic coupling of nanoparticles, suggesting the formation of closely packed nanoparticle thin films. The interfacial film could be transferred to mica substrates and carbon-coated transmission electron microscopy (TEM) grids. The transferred films were very stable for a prolonged time. The samples were characterized by UV-vis spectroscopy, scanning electron microscopy (SEM), TEM, and X-ray photoelectron spectroscopy (XPS). SEM and TEM results show that the films formed at the liquid/liquid interface are indeed composite materials consisting of CNTs and nanoparticles. XPS measurements further indicate the presence of the interaction between nanoparticles and CNTs.

摘要

据报道，碳纳米管（CNTs）介导金属（金和银）纳米颗粒在液/液界面以稳定的纳米复合膜形式进行自组装。金属光泽源于纳米颗粒的电子耦合，表明形成了紧密堆积的纳米颗粒薄膜。界面膜可转移到云母基板和碳涂层透射电子显微镜（TEM）网格上。转移后的膜在很长一段时间内都非常稳定。通过紫外-可见光谱、扫描电子显微镜（SEM）、TEM和X射线光电子能谱（XPS）对样品进行了表征。SEM和TEM结果表明，在液/液界面形成的膜确实是由碳纳米管和纳米颗粒组成的复合材料。XPS测量进一步表明纳米颗粒与碳纳米管之间存在相互作用。