Oxidation Resistance of Graphene-Coated Cu and Cu/Ni Alloy
Oxidation Resistance of Graphene-Coated Cu and Cu/Ni Alloy
复制标题
石墨烯包覆铜及铜/镍合金的抗氧化性能
DOI：
10.1021/nn103028d
复制
发表时间：
2011-02-01
期刊：
影响因子：
17.1
通讯作者：
Ruoff, Rodney S.
中科院分区：
文献类型：
--
作者：
Chen, Shanshan;Brown, Lola;Ruoff, Rodney S.
在许多工业和学术应用中，保护精炼金属免受活性环境影响的能力至关重要。然而，目前的解决方案通常会带来一些负面影响，包括厚度增加以及金属物理性质的改变。在本文中，我们首次证明了通过化学气相沉积生长的石墨烯薄膜能够保护铜以及铜/镍合金的金属生长基底表面免受空气氧化。特别是，石墨烯可防止在受保护的金属表面形成任何氧化物，从而使纯金属表面距离活性环境仅一个原子之隔。扫描电子显微镜（SEM）、拉曼光谱和X射线光电子能谱（XPS）研究表明，即使在空气中200摄氏度加热长达4小时后，金属表面仍能得到很好的抗氧化保护。我们的工作进一步表明，石墨烯对过氧化氢具有有效的抵抗作用。这种保护方法具有显著优势，可用于任何能催化石墨烯生长的金属。
The ability to protect refined metals from reactive environments is vital to many industrial and academic applications. Current solutions, however, typically introduce several negative effects, including increased thickness and changes in the metal physical properties. In this paper, we demonstrate for the first time the ability of graphene films grown by chemical vapor deposition to protect the surface of the metallic growth substrates of Cu and Cu/Ni alloy from air oxidation. In particular, graphene prevents the formation of any oxide on the protected metal surfaces, thus allowing pure metal surfaces only one atom away from reactive environments. SEM, Raman spectroscopy, and XPS studies show that the metal surface is well protected from oxidation even after heating at 200 degrees C in air for up to 4 h. Our work further shows that graphene provides effective resistance against hydrogen peroxide. This protection method offers significant advantages and can be used on any metal that catalyzes graphene growth.