A nanocomposite constructed by intercalating iron porphyrin into layered tantalotungstate with exfoliation/self-assembly method utilized for electrocatalytic oxidation of nitrite

Abstract

Exfoliation/restacking route was utilized to investigate layer-by-layer self-assembly of FeTMPyP/TaWO6 [5, 10, 15, 20-tetrakis (N-methylpyridinium-4-yl) porphyrinato iron (III)] nanocomposite in this paper. The colloidal suspension of [Formula: see text] nanosheet was tested by Zeta potential and proved to be in a well-dispersed statement. Analysis technologies such as X-ray diffraction Scanning electron microscope (SEM) infrared UV-Vis were used to characterize the final product. The results showed that FeTMPyP molecules were introduced into the lamellar space of host material successfully. The electrochemical behaviors of FeTMPyP-TaWO6 nanocomposite were tested by cyclic voltammetry method, and the nanocomposite showed excellent electrocatalytic properties to the oxidation of nitrite with the anodic peak shifts from 0.122 to 0.860[Formula: see text]V. Besides, the detection limit of nitrite can be calculated to be [Formula: see text][Formula: see text]M with the concentration of nitrite ranging from 0.1 to 3.61[Formula: see text]mM by different pulse voltammetry (DPV) analyzation.