From graphite oxide to nitrogen and sulfur co-doped few-layered graphene by a green reduction route via Chinese medicinal herbs
From graphite oxide to nitrogen and sulfur co-doped few-layered graphene by a green reduction route via Chinese medicinal herbs
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DOI：
10.1039/c4ra01985g
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发表时间：
2014-01-01
期刊：
影响因子：
3.9
通讯作者：
Zhao, Xinbing
中科院分区：
文献类型：
--
作者：
Feng, Bin;Xie, Jian;Zhao, Xinbing
在这项工作中，我们开发了一种绿色、简便的方法，通过使用两种中草药菊粉和枸杞还原氧化石墨(GO)来制备石墨烯。用紫外-可见吸收光谱、X射线衍射、X射线光电子能谱、拉曼光谱、傅里叶变换红外光谱、扫描电子显微镜和透射电子显微镜对还原产物进行了系统的表征。这些结果提供了令人信服的证据，证明在还原反应后，GO中的含氧基团被去除，形成了少层的石墨烯。同时，在较低的温度(90℃)下实现了氮硫共掺杂。并对石墨烯中GO和N、S键构型的还原机理进行了探讨。
In this work, we developed a green and facile approach to prepare graphene by the reduction of graphite oxide (GO) using two Chinese medicinal herbs: inulin and Chinese wolfberry. The reduced products were systematically characterized by UV-visible absorption spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy and transmission electron microscopy. These results provided convincing evidence of the removal of oxygen-containing groups from GO to form few-layered graphene after the reduction reaction. Simultaneously, nitrogen and sulfur co-doping were achieved under a relatively low temperature (90 degrees C). The reduction mechanism of GO and N, S bonding configurations in graphene were also proposed.