Abstract
A 3D metal-organic framework (Cu4.5(BTZE)1.5(OH)4(SO4)(H2O)1.5∙4H2O)n (BTZE is 1,2-bis(tetrazol-5-yl) ethane anion) modified carbon paste electrode (Cu-BTZE/CPE) has been fabricated for hydrazine sensing. The Cu-BTZE framework was prepared through a facile solvo-thermal method and characterized by Fourier-transform infrared spectrometry, X-ray diffraction, and scanning electron microscopy. Meanwhile, the electrochemical performances of the modified electrode were studied by electrochemical impedance spectroscopy, chronocoulometry, cyclic voltammetry, and amperometry. Owing to the large electrochemically active surface area and enhanced electron transfer efficiency of Cu-BTZE framework, the Cu-BTZE/CPE showed enhanced electrocatalytic activity toward the oxidation of hydrazine compared with unmodified CPE. Under the optimized conditions, the amperometric current presented linear dependence on the concentration of hydrazine in the ranges of 0.02~1.2 μM and 1.2~500 μM, respectively. The detection limit was 6 nM, lower than the reported Cu-based hydrazine sensors. Furthermore, the sensor has applied for the determination of hydrazine in water samples.
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.
