H₂O₂ Electrochemical Sensor Based on Scutellaria Barbata Extract Biosynthesized of Gold Nanoparticles

摘要

Nobel metal nanoparticles are receiving increasing attention in many fields such as material chemistry,environmental science and pharmaceutical science. In this study, a facial synthesis of a goldnanoparticles (Au NPs) was carried out from Scutellaria barbata extract. The synthesized Au NPs wascharacterized by using UV-vis spectroscopy and X-ray photoelectron spectroscopy. The preparationprocess was highly rapid since the formation of Au nanoparticles was totally complete within 3 h. Wefurther investigated the electrochemical properties of the biosynthesized Au NPs. A nonenzymaticH2O2 electrochemical sensor was shown to be successfully fabricated by using biosynthesized Au NPs.Moreover, the fabricated electrochemical sensor also showed good selectivity.