Global and Local Oxidation Behavior of Reduced Graphene Oxide
Global and Local Oxidation Behavior of Reduced Graphene Oxide
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DOI：
10.1021/jp2003744
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发表时间：
2011-04
影响因子：
3.7
通讯作者：
P. Solís-Fernández;J. I. Paredes;S. Villar-Rodil;L. Guardia;M. J. Fernández-Merino;G. Dobrik;L. Biró;A. Martínez-Alonso;J. Tascón
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作者：
P. Solís-Fernández;J. I. Paredes;S. Villar-Rodil;L. Guardia;M. J. Fernández-Merino;G. Dobrik;L. Biró;A. Martínez-Alonso;J. Tascón
研究了空气热氧化、微波氧等离子体、紫外臭氧和扫描隧道显微镜（STM）光刻对还原氧化石墨烯（RGO）的氧化和蚀刻。这种类型的石墨烯表现出比原始石墨（作为参考碳材料）更高的氧化反应性，这可能与其内在缺陷结构有关。由于空气中热氧化的结果，RGO的蚀刻温度低至400°C，而石墨的温度为~ 500°C，这表明前者上存在的缺陷与原始石墨表面上发现的缺陷性质不同。氧化作用下单个氧化氧化石墨烯薄片的形态演变与薄片本质上是微小结构域（几到几纳米大）的拼凑一致，具有两种不同的反应性，高（低）反应性与缺陷（无缺陷）结构域相关。氧函数的引入…
The oxidation and etching of reduced graphene oxide (RGO) by thermal oxidation in air, microwave oxygen plasma, ultraviolet-generated ozone, and scanning tunneling microscopy (STM) lithography have been investigated. This type of graphene exhibited a higher reactivity toward oxidation than that of pristine graphite (taken as a reference carbon material), which could be related to its intrinsically defective structure. Etching of RGO as a result of thermal oxidation in air was started at as low a temperature as 400 °C, as compared to ∼500 °C for graphite, indicating that the defects present on the former are different in nature from those found on the surface of pristine graphite. The morphological evolution of individual RGO sheets upon oxidative attack was consistent with the sheets being essentially a patchwork of minute domains (a few to several nanometers large) with two distinct reactivities, higher (lower) reactivity associated with defective (defect-free) domains. The introduction of oxygen functio...