电化学解卷多壁碳纳米管以简便合成高质量石墨烯纳米带。

Electrochemical unzipping of multi-walled carbon nanotubes for facile synthesis of high-quality graphene nanoribbons.

机构信息

Physical and Materials Chemistry Division, National Chemical Laboratory, Pune 411 008, India.

出版信息

J Am Chem Soc. 2011 Mar 30;133(12):4168-71. doi: 10.1021/ja1101739. Epub 2011 Mar 9.

Abstract

Here we report a remarkable transformation of carbon nanotubes (CNTs) to nanoribbons composed of a few layers of graphene by a two-step electrochemical approach. This consists of the oxidation of CNTs at controlled potential, followed by reduction to form graphene nanoribbons (GNRs) having smooth edges and fewer defects, as evidenced by multiple characterization techniques, including Raman spectroscopy, atomic force microscopy, and transmission electron microscopy. This type of "unzipping" of CNTs (single-walled, multi-walled) in the presence of an interfacial electric field provides unique advantages with respect to the orientation of CNTs, which might make possible the production of GNRs with controlled widths and fewer defects.

摘要

在这里，我们报告了一种通过两步电化学方法将碳纳米管（CNTs）转化为由几层石墨烯组成的纳米带的非凡转变。这包括在受控电势下氧化 CNTs，然后还原形成具有光滑边缘和较少缺陷的石墨烯纳米带（GNRs），这一点通过多种表征技术得到了证明，包括拉曼光谱、原子力显微镜和透射电子显微镜。在界面电场存在的情况下，这种“解开” CNTs（单壁、多壁）的方式在 CNTs 的取向方面具有独特的优势，这可能使具有可控宽度和较少缺陷的 GNRs 的生产成为可能。