State Key Laboratory of Solidification Processing, Carbon/Carbon Composites Research Center, Northwestern Polytechnical University, Xi'an 710072, China.
J Colloid Interface Sci. 2013 Nov 1;409:1-7. doi: 10.1016/j.jcis.2013.07.021. Epub 2013 Jul 20.
By using dipotassium hydrogen phosphate (K2HPO4·3H2O), an efficient and environmentally friendly route for the reduction of the exfoliated graphene oxide nanosheets (GO) is reported in this work. The chemically reduced graphene oxide nanosheets (RGO) have been analyzed by X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectra, X-ray photoelectron spectroscopy, Field emission transmission electron microscopy, Atomic force microscopy, and Thermogravimetric analysis. Considering the analysis results, dipotassium hydrogen phosphate plays a key role in the efficient removal of the oxygen-containing groups in GO, which avoids the use of high toxic and hazardous reducing agents commonly used to obtain RGO in chemical reduction of GO. Dipotassium hydrogen phosphate itself and prepared graphene are environmentally friendly and inexpensive, which may open new opportunities for mass production of graphene by reducing GO.
本文报道了一种利用磷酸氢二钾（K2HPO4·3H2O）还原剥离氧化石墨烯纳米片（GO）的高效、环保的方法。通过 X 射线衍射、傅里叶变换红外光谱、拉曼光谱、X 射线光电子能谱、场发射透射电子显微镜、原子力显微镜和热重分析对化学还原氧化石墨烯纳米片（RGO）进行了分析。考虑到分析结果，磷酸氢二钾在高效去除 GO 中的含氧基团方面发挥了关键作用，避免了使用通常用于化学还原 GO 获得 RGO 的高毒性和危险的还原剂。磷酸氢二钾本身和制备的石墨烯是环保且廉价的，这可能为通过还原 GO 大规模生产石墨烯开辟新的机会。
