Abstract
Investigations of the effects of different carriers on electrocatalytic properties of materials are important for heterogeneous systems. Here, we describe the development of composites based on platinum nanoparticles (Pt NPs) incorporated into three Zr-based MOFs, namely, UiO-66, UiO-67 and UiO-68. Three kinds of Zr-MOFs are composed of inorganic Zr6(μ3-O)4(μ3-OH)4 bricks connected through dicarboxylic ligands of different lengths. The surface morphology and microstructure of Pt@UiO-66/67/68 hybrid materials were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and N2 adsorption-desorption measurements. Hydrazine (N2H4) is chosen as probe molecule to evaluate the electrocatalytic properties of materials due to their rich oxidation process. Cyclic voltammetry (CV) and chronoamperometry (CA) have been used to investigate the electrocatalytic properties of as-fabricated sensors for electrochemical oxidation of N2H4. These studies reveal that N2H4 shows different oxidation mechanisms and electrocatalytic performances at Pt@UiO-66/67/68 modified electrodes. Under the optimal conditions, Pt@UiO-66-2 composite exhibits the best electro-oxidation properties for N2H4. These findings may induce an awareness of the effect of the MOFs carrier structures on the electrochemical performances of composites.
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.
