Abstract

Onion-like fullerenes possess distinctive physical and chemical performance, and thus are believed to have great significance in theoretical study and engineering applications. In this exploratory research, we introduced a novel way, namely electrochemical reduction method performed in aqueous solution at room temperature and very low voltages, for preparing a film composed of onion-like fullerene nanostructures. The method was discovered by accident. During the preparation of thick Cr coating by electrodepositing from Cr (III) electrolyte, a layer of black film was found at the interface between the steel substrate and Cr coating. XPS analysis shows that the main element contained in the film is C. The results from Raman spectrum, HRTEM and SAED reveal that the carbonaceous film is composed of the nanostructures roughly having onion-like fullerene unit. This means with significant advantages has the potential to develop into a practical technique for fabricating carbonaceous films or coatings.

摘要

洋葱状富勒烯具有独特的物理和化学性能，在理论研究和工程应用中具有重要意义。在这项探索性研究中，我们介绍了一种新方法，即在室温和极低电压的水溶液中进行电化学还原法，以制备由洋葱状富勒烯纳米结构组成的薄膜。该方法是偶然发现的。在用Cr(III)电解液电沉积制备厚Cr涂层的过程中，在钢基体和Cr涂层之间的界面处发现了一层黑色薄膜。XPS分析表明，薄膜中的主要元素是C。拉曼光谱的结果，HRTEM和SAED表明，碳质薄膜由大致具有洋葱状富勒烯单元的纳米结构组成。这意味着具有显着优势的具有发展成为制造碳质薄膜或涂层的实用技术的潜力。