Department of Chemistry, Department of Biology, Department of Physics, and Center for Functional Nanoscale Materials, Clark Atlanta University, Atlanta, GA 30314, USA.
Department of Electrical and Computer Engineering, Center for Materials for Information Technology, The University of Alabama, Tuscaloosa, AL 35487, USA.
J Nanosci Nanotechnol. 2020 Apr 1;20(4):2611-2616. doi: 10.1166/jnn.2020.17215.
In this work, we report a facile approach to modify the magnetic and electrical property of Hipco single-walled carbon nanotubes (SWCNTs) by attaching iron oxide nanoparticles (FeNPs). The Raman spectra of FeNP-SWCNTs revealed an apparent intensity reduction of metallic peaks in Radial breathing mode (RBM) region, which indicates the ratio change between the metallic and semiconducting component of SWCNTs after modification. Distinctive magnetic and electric resistance properties of FeNP-SWCNTs were found to be associated with the different shapes of FeNPs. The specific FeNP examples as showcased in this work can be applied to tune the electric and magnetic properties of other nanostructured materials in general and shed light on various electronic and magnetic applications.
在这项工作中，我们报告了一种通过附着氧化铁纳米粒子 (FeNPs) 来改变 Hipco 单壁碳纳米管 (SWCNTs) 的磁性和电性的简便方法。FeNP-SWCNTs 的拉曼光谱显示出径向呼吸模式 (RBM) 区域中金属峰的明显强度降低，这表明修饰后 SWCNTs 的金属和半导体成分的比例发生了变化。FeNP-SWCNTs 的独特磁性和电阻特性与 FeNPs 的不同形状有关。本工作中展示的特定 FeNP 示例可用于一般调节其他纳米结构材料的电性和磁性，并为各种电子和磁性应用提供启示。
