Influence Factors of Exfoliation Synthesis Exfoliated Graphite from Vietnamese Natural Graphite Flakes Using Microwave Irradiation

Abstract

In this study, we prepared the exfoliated graphite (EG) using microwave-assisted exfoliation synthesis exfoliated graphite from the inexpensive natural Vietnamese graphite flakes as the precursors. The exfoliation of graphite was conducted employing intercalation method using H2O2 as oxidizing agent and H2SO4 as intercalating agent. The influent of the precursors (VH2O2/VH2SO4) (1.0/20 – 2.0/20), pH value of EG (1-6), time intercalation (70-120 min), microwave power (180-720 W), and time microwave (10-60 second) in the exfoliation volume of EG was investigated.