Consequence of oxidation method on graphene oxide produced with different size graphite precursors
Consequence of oxidation method on graphene oxide produced with different size graphite precursors
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DOI：
10.1016/j.mseb.2017.07.018
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发表时间：
2017-10-01
影响因子：
3.6
通讯作者：
Chianelli, Russell R.
中科院分区：
文献类型：
--
作者：
Deemer, Eva M.;Paul, Pabitra Kumar;Chianelli, Russell R.
剥离方法是生产化学衍生石墨烯 (CDG) 的最具成本效益的方法，但 CDG 的电子性能强烈依赖于石墨烯的横向和垂直尺寸，特别是在宏观尺度薄膜的开发方面。这项工作展示了使用两种不同尺寸的石墨前体通过 Marcano-Tour 方法和修改 Hummer 方法制备的氧化石墨烯 (GO) 的功能变化。使用真空过滤制备还原 GO 纸，并通过霍尔探针和拉曼光谱进行检查，以确保其质量。通过傅里叶变换红外光谱 (FTIR)、热重分析 (TGA) 和 X 射线衍射 (XRD) 技术探索了氧化控制的 GO 尺寸与其整体电导率之间的相关性。这项研究表明，改进的 Hummer 方法适当地保留了由较大 GO 薄片生产的 GO 基面，具有较小的片间电阻，并说明了比较生产大面积高质量石墨烯相关纳米结构的合成方法的重要性。
Exfoliation method is a most cost effective method for producing chemically derived-graphene (CDG) yet electronic performance of CDG strongly depends on the lateral and vertical dimensions of graphene especially in regards to the development of macroscopic scale films. This work demonstrates the variation in functionality of Graphene oxide (GO) prepared via Marcano-Tour's and modified Hummer's method using two different sized graphite precursors. Reduced GO papers were fabricated using vacuum filtration and examined by Hall probe and Raman spectroscopy to ensure their quality. A correlation between oxidation-controlled GO size with their overall electrical conductivity is explored by Fourier Transform Infrared spectroscopy (FTIR), Thermo Gravimetric Analysis (TGA) and X-ray Diffraction (XRD) techniques. This study reveals that the modified Hummer's method suitably preserves basal planes of GO produced from larger GO flakes with less inter-sheet resistance and illustrates the importance of comparing synthetic methods for producing large area high quality graphene related nanostructures.