Abstract
Abstract A highly sensitive amperometric glucose biosensor was fabricated by the synthesized cuprous oxide (Cu 2 O) nanocube. The synthesized nano-Cu 2 O and modified electrode were characterized using X-ray diffraction and scanning electron microscopy. The results showed that the obtained samples were nanocube Cu 2 O. The electrochemical properties of the modified sensors were investigated by cyclic voltammetry (CV), differential pulse voltammetry (DPV), electrochemical impedance spectroscopy (EIS), and chronoamperometry (CA). The CV behavior of nanocube Cu 2 O modified sensor was investigated in 0.1 M PBS (pH 7.4, containing 0.1 mM glucose). The prepared sensor presented remarkably enhanced electrocatalytic activity toward glucose detection. Linear responses of the sensor to glucose were observed in the concentration range from 5.0 × 10 −6 M to 4.0 × 10 −3 M ( R 2 = 0.9983), with a detection limit of 6.8 × 10 −7 M ( S/N = 3). CA results showed no interference from potential interfering species, such as uric acid, ascorbic acid, and D -fructose. The developed sensor also exhibited good repeatability and stability, and was successfully applied to detect glucose in real urea samples.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
