EELS Analysis of Nylon 6 Nanofibers Reinforced with Nitroxide-Functionalized Graphene Oxide.
EELS Analysis of Nylon 6 Nanofibers Reinforced with Nitroxide-Functionalized Graphene Oxide.
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DOI：
10.1016/j.carbon.2013.12.087
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发表时间：
2014
期刊：
影响因子：
10.9
通讯作者：
Bonilla-Cruz, Jose
中科院分区：
文献类型：
--
作者：
Leyva-Porras, Cesar;Ornelas-Gutierrez, C.;Miki-Yoshida, M.;Avila-Vega, Yazmin I.;Macossay, Javier;Bonilla-Cruz, Jose
本文报道了通过透射电子显微镜（TEM）和电子能量损失谱（EELS）对分散在尼龙6纳米纤维中的氮氧化物官能化的氧化石墨烯层（GOFT）的详细分析。通过TEM使用电子衍射图案（EDP）确认氧化石墨到GOFT的官能化和剥离过程，其中观察到1至4个GOFT的石墨烯层。尼龙6纳米纤维中GOFT层的分布和排列表明，GOFT片晶主要分布在纤维内部，但也有部分从纤维中突出。此外，尼龙6纳米纤维的平均直径为225 nm，长度为几微米。通过EELS分析嵌入到纤维、原始纤维和无定形碳中的GOFT片晶，其中每个光谱[对应于碳边缘（C-K）]显示精细结构的变化，从而允许在i）GOFT单层、ii）尼龙-6纳米纤维和iii）碳基底之间进行明确区分。EELS分析在这里首次作为一种强大的工具来识别功能化石墨烯单层（< 4层GOFT）到尼龙6纳米复合材料中。
A detailed analysis by transmission electron microscopy (TEM) and electron energy loss spectroscopy (EELS) of nitroxide-functionalized graphene oxide layers (GOFT) dispersed in Nylon 6 nanofibers is reported herein. The functionalization and exfoliation process of graphite oxide to GOFT was confirmed by TEM using electron diffraction patterns (EDP), wherein 1 to 4 graphene layers of GOFT were observed. The distribution and alignment of GOFT layers within a sample of Nylon 6 nanofiber reveals that GOFT platelets are mainly within the fiber, but some were partially protruding from it. Furthermore, Nylon 6 nanofibers exhibit an average diameter of 225 nm with several microns in length. GOFT platelets embedded into the fiber, the pristine fiber, and amorphous carbon were analyzed by EELS where each spectra [corresponding to the carbon edge (C-K)] exhibited changes in the fine structure, allowing a clear distinction between: i) GOFT single-layers, ii) Nylon-6 nanofibers, and iii) the carbon substrate. EELS analysis is presented here for the first time as a powerful tool to identify functionalized graphene single-layers (< 4 layers of GOFT) into a Nylon 6 nanofiber composite.
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影响因子：
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作者：
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通讯作者：
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