Figure 1
From: A Low-Cost Non-explosive Synthesis of Graphene Oxide for Scalable Applications

XRD spectra of (a) graphite (C) and potassium permanganate (KMnO4) mixture after washing, (b) Samples in (a) mixed with sulphuric acid and hydrogen peroxide (without heating) after washing and with zero soaking time, (c) Sample in (b) with heating and washing, (d) ICDD card number of carbon, graphite and various Mn oxides.