BISMUTH VANADATE ELECTRODE COMPRISING VANADIUM-FUNCTIONALIZED GRAPHENE QUANTUM DOTS AND A PREPARATION METHOD THEREOF

摘要

The present disclosure relates to a bismuth vanadate electrode including vanadium-functionalized graphene quantum dots and a method for preparing the same. More particularly, it relates to a technology which is capable of, by adding graphene quantum dots (GQDs) in the process of immersing a bismuth vanadate (BiVO₄) electrode in an alkaline solution to remove vanadium oxide (V₂O₅) excessively formed on the surface of the electrode during its preparation, protecting the electrode from the alkaline solution as the graphene quantum dots are adsorbed onto the surface of BiVO₄ while V₂O₅ is removed, and improving the efficiency of oxygen evolution reaction (OER) when applied to a photoanode due to vanadium (V)-functionalized graphene quantum dots formed as the etched vanadium ions ((VO)₄³⁻) are adsorbed onto the graphene quantum dots.