Reduced graphene oxide by chemical graphitization
Reduced graphene oxide by chemical graphitization
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DOI：
10.1038/ncomms1067
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发表时间：
2010-09-01
影响因子：
16.6
通讯作者：
Lee, Hyoyoung
中科院分区：
文献类型：
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作者：
Moon, In Kyu;Lee, Junghyun;Lee, Hyoyoung
还原氧化石墨烯（RG-O）由于其在电子和光电子器件和电路中的潜在应用而引起了相当大的兴趣。然而，除了肼还原剂之外，关于氧化石墨烯（G-O）在溶液和气相中的化学诱导还原方法知之甚少，尽管使用气相在预图案化基底上图案化亲水性G-O并原位还原为疏水性RG-O是必要的。我们报道了一种新的还原剂体系（具有乙酸的碘酸（HI-AcOH）），其允许溶液相RG-O粉末和气相RG-O（VRG-O）纸和薄膜的有效的一锅还原。还原剂体系通过大规模生产提供高质量的RG-O，从而产生高导电性的RG-OHI-AcOH。此外，VRG-OHI-AcOH纸和薄膜是在低温（40摄氏度）下制备的，并且被发现适用于柔性器件。这种一锅法有望推进对高导电石墨烯片晶的研究。
Reduced graphene oxides (RG-Os) have attracted considerable interest, given their potential applications in electronic and optoelectronic devices and circuits. However, very little is known regarding the chemically induced reduction method of graphene oxide (G-O) in both solution and gas phases, with the exception of the hydrazine-reducing agent, even though it is essential to use the vapour phase for the patterning of hydrophilic G-Os on prepatterned substrates and in situ reduction to hydrophobic RG-Os. In this paper, we report a novel reducing agent system (hydriodic acid with acetic acid (HI-AcOH)) that allows for an efficient, one-pot reduction of a solution-phased RG-O powder and vapour-phased RG-O (VRG-O) paper and thin film. The reducing agent system provided highly qualified RG-Os by mass production, resulting in highly conducting RG-OHI-AcOH. Moreover, VRG-OHI-AcOH paper and thin films were prepared at low temperatures (40 degrees C) and were found to be applicable to flexible devices. This one-pot method is expected to advance research on highly conducting graphene platelets.