An Enzyme-Free Ti3c2/Ni/Sm-Ldh-Based Screen-Printed-Electrode for Real-Time Sweat Detection of Glucose Publisher Pubmed



Gilnezhad J¹ ; Firoozbakhtian A² ; Hosseini M^{2, 3} ; Adel S¹ ; Xu G^{4, 5} ; Ganjali MR¹ Show Affiliations
Source: Analytica Chimica Acta Published:2023

Abstract

Here, we report the fabrication of an enzyme-free glucose sensor benefiting from nickel-samarium nanoparticles-decorated MXene layered double hydroxide (MXene/Ni/Sm-LDH). The electrochemical response of the MXene/Ni/Sm-LDH to glucose was studied via cyclic voltammetry (CV). The fabricated electrode has high electrocatalytic activity for glucose oxidation. The voltametric response of the MXene/Ni/Sm-LDH electrode to glucose was investigated by differential pulse voltammetry (DPV) that demonstrated an extended linear range of from 0.001 to 0.1 mM and 0.25–7.5 mM with a detection limit down to 0.24 μM (S/N = 3) and a sensitivity at 1673.54 μA mM−1 cm−2 1519.09 μA mM−1 cm−2 in concentrations of 0.01 mM and 1 mM respectively as well as good repeatability, high stability and applicability for the real sample analysis. Moreover, the as-fabricated sensor was applied to glucose detection in human sweat and showed promising results. © 2023 Elsevier B.V.