Department of Chemical Engineering, The Petroleum Institute, PO Box 2533, Abu Dhabi, United Arab Emirates.
Environ Sci Pollut Res Int. 2013 May;20(5):3271-9. doi: 10.1007/s11356-012-1257-6. Epub 2012 Oct 24.
In this article, we study the use of thermally reduced graphene (TRG) for oil spill cleanup. TRG was synthesized by thermal exfoliation of graphite oxide and characterized by X-ray diffusion, Raman spectroscopy, SEM, TEM, elemental analysis, and Brunauer-Emmett-Teller (BET) surface area measurement. Various aspects of the sorption process have been studied including the sorption capacity, the recovery of the adsorbed oil, and the recyclability of TRG. Our results shows that TRG has a higher sorption capacity than any other carbon-based sorbents, with sorption capacity as high as 131 g of oil per gram TRG. With recovery of the sorbed oil via filtration and reuse of TRG for up to six cycles, 1 g of TRG collectively removes approximately 300 g of crude oil. Moreover, the effects of TRG bulk density, pore volume, and carbon/oxygen ratio and the oil viscosity on the sorption process are also discussed.
在本文中，我们研究了热还原石墨烯（TRG）在溢油清理中的应用。TRG 通过氧化石墨的热剥离合成，并通过 X 射线衍射、拉曼光谱、SEM、TEM、元素分析和 Brunauer-Emmett-Teller（BET）表面积测量进行了表征。我们研究了吸附过程的各个方面，包括吸附容量、吸附油的回收和 TRG 的可循环性。我们的结果表明，TRG 的吸附容量比任何其他基于碳的吸附剂都要高，其吸附容量高达每克 TRG 吸附 131 克油。通过过滤回收吸附的油，并将 TRG 重复使用多达六次，1 克 TRG 总共可以去除约 300 克原油。此外，还讨论了 TRG 体密度、孔体积、碳/氧比以及油粘度对吸附过程的影响。
