Graphene produced with using surfactant from expanded graphite

Graphene is a single layer of graphite with hexagonal structure which have stacked layers. has recently been recognized by its researchers due to it sp2 bonds in lattice, the two-dimensional atomic thickness, and superior electrical, electrochemical, optical, thermal, mechanical properties lightness. Liquid phase exfoliation (LPE) most promising method graphene research produce high quality production or low In addition, LPE an easy inexpensive as well enables higher capacity graphene. use surfactant mainly make water suitable means exfoliation. Furthermore, adsorbable surfactants provide effective charge electrostatic repulsion prevent re-aggregation sheets, thus providing stabilization against recombination suspended Because 1,2-Dichlorobenzene ortho-dichlorobenzene (O-DCB) both solvent for synthesis, one best liquid method. this study, powders were mixed acid solution H2SO4 HNO3 12h. The resulting powder was washed distilled until neutral pH obtained then subjected thermal treatment obtain expanded graphite. ultrasonic homogenizer mixture O-DCB 2h using 50 % strength examined Transmission electron microscope (TEM) X-ray photoelectron spectroscopy (XPS).