School of Petrochemical Engineering and Jiangsu Province Key Laboratory of Fine Petro-chemical Technology, Changzhou University, Changzhou 213164, PR China.
Mater Sci Eng C Mater Biol Appl. 2013 Oct;33(7):3811-6. doi: 10.1016/j.msec.2013.05.016. Epub 2013 May 14.
We report a new method to convert graphene oxide (GO) to stable colloidal dispersion of reduced graphene oxide nanosheets (RGONS) using sodium diphenylamine sulfonate (SDAS) as a reductant, as well as itself and its redox product as the stabilizer. The as-prepared RGONS have been characterized by X-ray diffraction, Fourier transform infrared spectroscopy, UV-visible spectroscopy, thermo-gravimetric analysis, scanning and transmission electron microscopy, X-ray photoelectron spectroscopy, atomic force microscopy and Raman spectroscopy. The results indicate that the bulk of oxygen-containing functional groups from GO have been removed. Based on the cyclic voltammogram (CV) analyses, it is found that the RGONS-based material exhibits better electrochemical activity in sensing ascorbic acid than GO. The simple method provides a new efficient route for the synthesis of water-soluble RGONS on a large scale and novel composites.
我们报告了一种新的方法，使用二苯基胺磺酸钠（SDAS）作为还原剂，同时将其自身及其氧化还原产物作为稳定剂，将氧化石墨烯（GO）转化为稳定的还原氧化石墨烯纳米片（RGONS）胶体分散体。所制备的 RGONS 通过 X 射线衍射、傅里叶变换红外光谱、紫外-可见光谱、热重分析、扫描和透射电子显微镜、X 射线光电子能谱、原子力显微镜和拉曼光谱进行了表征。结果表明，GO 中大量的含氧官能团已经被去除。基于循环伏安法（CV）分析，发现 RGONS 基材料在检测抗坏血酸方面表现出比 GO 更好的电化学活性。这种简单的方法为大规模合成水溶性 RGONS 和新型复合材料提供了一种新的有效途径。
