عنوان	Surface-Renewable AgNPs/CNT/rGO Nanocomposites as Bifunctional Impedimetric Sensors
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Silver nanoparticle  rGO  MoO2/Sal-His  Cysteine  Iodate
چکیده	In this study, glassy carbon electrode modified by silver nanoparticles/carbon nanotube/reduced graphene oxide (AgNPs/CNT/rGO) composite has been utilized as a platform to immobilize cis-dioxomolybdenum (VI)–salicylaldehydehistidine (MoO2/Sal-His). The modified electrode shows two reversible redox couples for MoO2/Sal-His. Electrocatalytic oxidation of cysteine (CySH) and electrocatalytic reduction of iodate on the surface of the modified electrode were investigated with cyclic voltammetry and electrochemical impedance spectroscopy methods. The presence of MoO2/Sal- His on AgNPs/CNT/rGO shifted the catalytic current of iodate reduction to a more positive potential and the catalytic current of cysteine oxidation to a more negative potential. The change of interfacial charge transfer resistance (Rct) recorded by the modified electrode was monitored for sensitive quantitative detection of CySH and iodate. Moreover, the sensor has a good stability, and it can be renewed easily and repeatedly through a mechanical or electrochemical process
پژوهشگران	آزاده آزادبخت (نفر اول)، امیر رضا عباسی (نفر دوم)، زهره دریکوند (نفر سوم)، زیبا کریمی (نفر چهارم)، محمود روشنی (نفر پنجم)