Design of a new nanocomposite between bismuth nanoparticles and graphene oxide for development of electrochemical sensors.

This study describes a new route for preparation of a nanocomposite between graphene oxide (GO) and bismuth nanoparticles (BiNPs) and its evaluation as modifier electrode for development of electrochemical sensors. BiNPs were synthesized under ultrasound conditions using Bi(NO) as metal precursor and ascorbic acid (AA) as reducing agent/passivating. Some experimental parameters of BiNPs synthesis such as Bi:AA molar ratio and reaction time were conducted aiming the best voltammetric performance of the sensor.