Green synthesis, characterisation of Au and Ag nanoparticles by various bioextracts and their usability at graphite electrode modification

In this study, the biosynthesis of Au and Ag nanoparticles (AuNp AgNp) with a green chemistry approach was performed by using bioextracts various fruits vegetables (Lycopersicon esculentum (LE), Cucumis sativus (CS), Malus domestica (MD), Cucurbita pepo (CP), Apiumgraveolens var. rapaceum (AVR), Prunus cerasifera (PC), Oleraceae botrytis (OVB)). determination optimum experimental conditions, parameters such as type concentration bioextract, metal ion solutions, ratio solution to pH, reaction time temperature were found be significant. The characterisation AuNp AgNp synthesized providing most appropriate conditions UV-Vis., SEM, EDX, XPS FTIR techniques. study showed that, successfully detailed information obtained about their stabilities, sizes, homogeneities etc. final step, usability in modification pencil graphite electrodes (PGE) investigated. Electrochemical AuNp/GE AgNp/GE cyclic voltammetry (CV) electrochemical impedance spectroscopy (EIS) results calculated that these modified have better conductivity, electron transfer rate electrocatalytic activity.