We fabricated a two dimensional planar junction, formed with graphene oxide (GO) and selective electrochemical reduced graphene oxides (ERGO), which exhibited rectification of ionic current in the presence of electrolyte. Moreover, amplification of the ionic current was also demonstrated in planar transistor configuration constituted with two back-to-back planar GO-ERGO junctions. This device could also shed light on the transport of hydrogen ions in neurons through a process known as proton hopping. This is one of the key processes that help send signals through the nerve cells. Moreover, a field effect configuration device could help increase the efficiency electrocatalytic process without modifying the catalyst.