Iron-Modified CTNT Fiber for Non-Enzymatic Glucose Sensing
DOI:
https://doi.org/10.62051/ijmsts.v5n2.05Keywords:
Iron-based active phase, CTNT fiber electrode, Electrodeposition, Non-enzymatic glucose sensing, Amperometry, Alkaline medium, Cycling stabilityAbstract
This chapter investigates a CTNT (C/TiO₂/Ti) fiber platform modified with an iron-based active phase for non-enzymatic glucose sensing. Iron catalytic sites were introduced onto the CTNT electrode without binders to improve interfacial reaction efficiency and signal stability during glucose electro-oxidation. A conductive porous core-shell CTNT fiber electrode was first prepared by anodization and gas-phase carbonization, followed by potentiostatic electrodeposition using FeCl₃ to obtain Fe@CTNT. SEM/EDS was used to analyze the loading state and distribution of the iron species, and the cyclic voltammetric response, working potential, amperometric sensing performance, anti-interference behavior, cycling stability, and preparation reproducibility were systematically evaluated in 0.1 M NaOH under the same conditions as for Ni@CTNT. These results provide an experimental basis for applying iron-based systems in fiber-shaped flexible electrodes.
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