Abstract
An enzyme-free hydrogen peroxide (H 2O 2) biosensor based on MWCNT–PEDOT film modified electrode has been successfully performed on glassy carbon electrode (GCE) and indium tin oxide (ITO) electrode. At an applied potential of −0.5 V vs. Ag/AgCl, the MWCNT–PEDOT electrode exhibited linearly dependence on H 2O 2 concentration in the range of 0.1–9.8 mM. It can be observed two significantly linear sections. One shows sensitivity of 943 μM mM −1 cm −2 with signal/noise of 6; and the other one shows sensitivity of 174 μM mM −1 cm −2 with signal/noise of 4 in pH 7 PBS. It also presented excellent stability at room temperature, with a variation of response current less than 5% over 30 days. Moreover, the sensor was characterized by cyclic voltammetry (CV), scanning electronic microscopy (SEM), atomic force microscopy (AFM), and different pulse voltammetry (DPV). This sensor also can simultaneously detect AA, DA, and UA and can be utilized to develop multifunctional biosensors.
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.
