Abstract
In this work, the electrocatalytic oxidation of urea in alkaline medium was studied by the modified carbon paste electrode (CPE) with clinoptilolite nanoparticles (CNP) ion-exchanged with Ni(II) cations (Ni(II)-CNP/CPE) in cyclic voltammetry technique (CV). X-Ray diffraction (XRD), Scanning Electron Microscopy-Energy Dispersive X-Ray spectroscopy (SEM-EDX) and FT-IR methods were used for characterization of the samples. Interactions of the experimental factors were studied by designing the experiments via response surface methodology (RSM). The proposed electrode showed reasonable electrocatalytic effect in oxidation of urea, so the oxidation of urea on surface of the proposed electrode had lower overvoltage about 700mV less positive than the conventional Pt electrodes. Surface coverage concentration of the electrode was about 3.97×10−6molNi(OH)2cm−2. The apparent charge transfer rate constant and the cathodic charge transfer coefficient for the modified electrode were respectively obtained as 0.39s−1 (ks) and 0.18 (αc) in the absence of urea, while αa was 0.7 in the presence of urea.
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.
