Graphene oxide (GO) is a compound of carbon, oxygen, and hydrogen in variable ratios, obtained by treating graphite with strong oxidizers and acids. It is the oxidized form of graphene, which is a single-atomic-layered material formed by the oxidation of graphite. GO is not conductive due to the oxygen in its lattice, but it can be reduced to graphene by chemical methods. Graphene oxide has attracted much interest as a possible route for the large-scale production and manipulation of graphene, a material with extraordinary electronic properties. GO is dispersible in water and other solvents, which makes it possible to use solution-based processes. The reduction process is vital as it has a large impact on the quality of the reduced graphene oxide (rGO) produced. GO has a large area of applications in electronic, optics, chemistry, energy storage, and other fields.