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Graphene Oxide (GO) is a derivative of graphene, a 2-d material. This material is available in flakes that has a lot of potential applications including desalination of water. The flakes are stacked by vacuum filtration to form a membrane. The membrane consists of carboxylic acid (CA) and hydroxide (H) functional groups on the edges of the flakes and epoxide (E) and H functional groups on the plane side. The functional groups are distributed randomly and at an equal probability. The functional groups usually tend to be saturated at a certain are on the flakes generating two regions of the flakes 1. Oxidised Region 2. Pristine Graphene Region The pristine region of the membrane allows water to flow at a high flux, higher than conventional membrane used in reverse osmosis (RO). The oxidised region have a low water flux since the flow of water are obstructed by the functional groups. The functional groups have strong interaction with water molecules. Interaction exhibits between w