Al-Sherbini Al-Sayed, Bakr Mona, Ghoneim Iman, Saad Mohamed
Department of Measurements, Photochemistry and Agriculture Applications, National Institute of Laser Enhanced Science (NILES), Cairo University, P.O. Box 12631, Giza, Egypt.
J Adv Res. 2017 May;8(3):209-215. doi: 10.1016/j.jare.2017.01.004. Epub 2017 Feb 4.
Graphene sheets have been exfoliated from bulk graphite using high energy wet milling in two different solvents that were 2-ethylhexanol and kerosene. The milling process was performed for 60 h using a planetary ball mill. Morphological characteristics were investigated using scanning electron microscope (SEM) and transmission electron microscope (TEM). On the other hand, the structural characterization was performed using X-ray diffraction technique (XRD) and Raman spectrometry. The exfoliated graphene sheets have represented good morphological and structural characteristics with a valuable amount of defects and a good graphitic structure. The graphene sheets exfoliated in the presence of 2-ethylhexanol have represented many layers, large crystal size and low level of defects, while the graphene sheets exfoliated in the presence of kerosene have represented fewer number of layers, smaller crystal size and higher level of defects.
已使用高能湿磨法在两种不同溶剂（2-乙基己醇和煤油）中从块状石墨中剥离出石墨烯片。使用行星式球磨机进行了60小时的研磨过程。使用扫描电子显微镜（SEM）和透射电子显微镜（TEM）研究了形态特征。另一方面，使用X射线衍射技术（XRD）和拉曼光谱进行了结构表征。剥离出的石墨烯片具有良好的形态和结构特征，存在一定数量的缺陷且具有良好的石墨结构。在2-乙基己醇存在下剥离出的石墨烯片呈现出多层、大晶体尺寸和低缺陷水平，而在煤油存在下剥离出的石墨烯片层数较少、晶体尺寸较小且缺陷水平较高。
