▎ 摘　　要

NOVELTY - A graphene/polyaniline composite film based pH detecting electrode comprises electrode and outer surface coated graphene/polyaniline composite film, where the electrode is selected from indium tin oxide glass electrode, stainless steel electrode and gold-plated electrodes. USE - Graphene/polyaniline composite film based pH detecting electrode for detecting pH value of phosphate buffer solution (claimed). ADVANTAGE - The electrode has improved detection effect, and can be prepared in cost effective manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing graphene/polyaniline composite film based pH detecting electrode.