Prism-like bimetallic (Ni–Co) alkaline carboxylate-based non-enzymatic sensor capable of exceptionally high catalytic activity towards glucose

Abstract

In this study, we fabricate a novel non-enzymatic glucose sensor based on prism-like bimetallic alkaline carboxylate (CoNi-MIM). The morphology and structure of CoNi-MIM are carefully investigated by scanning electron microscopy...

Recent Advances in Materials for Enzyme-free Electrochemical Glucose Sensors

“…The electrochemical glucose oxidation by the sensor had a markedly high sensitivity of 5024.4 μA mM −1 cm −2 , a low detection limit of 56.1 nM, and a linear response of up to a concentration of 14.3 mM. (35) Wang et al synthesized a glucose electrocatalyst by loading Co 3 O 4 nanoclusters onto 3D kenaf stem-derived carbon and established an enzyme-free glucose sensor with a low detection limit of 26 μM and a linear range of 0.088-7 mM. (67) Wang et al fabricated an enzyme-free glucose sensor based on Co(OH) F nanoflower/carbon cloth prepared using a microplasma-based synthesis method; the sensor had a high sensitivity of 1806 μAmM −1 cm −2 and a low detection limit of 0.75 μM.…”

“…Nickel (Ni) is a common transition metal and has been widely used in glucose sensors, (10,13,(35)(36)(37)(38) because it has excellent electrochemical performance and high stability for glucose oxidation in an alkaline medium; in addition, it is not affected by the presence of chloride ions. Hu et al designed a novel nanocomposite enzyme-free glucose sensor by fabricating hierarchically nanostructured metal nickel on titania nanowire arrays.…”

“…Unlike Ni and Cu, Co has multiple valence states; therefore, the reaction mechanism is slightly more complicated. Various Co-based materials, including Co alloys, (35,58,59) Co 3 O 4 , (60)(61)(62)(63)(64)(65)(66)(67) and Co(OH) 2 , (68,69) have been used in nanostructured enzyme-free glucose sensors. Chu et al fabricated a novel nonenzymatic glucose sensor based on a prism-like bimetallic alkaline carboxylate (CoNi-MIM).…”

Progress of Enzymatic and Non-Enzymatic Electrochemical Glucose Biosensor Based on Nanomaterial-Modified Electrode

“…The direct contact between the Ni nanostructure and AuNPs on the FTO electrode produced a synergistic effect, which facilitated rapid electron transfer during glucose detection. In another work, bimetallic Co-Ni in a prism nanostructure was employed in the modification of the ITO electrode for non-enzymatic glucose biosensor [ 218 ]. The modified electrode of Co-Ni/ITO exhibited very high sensitivity of 5024.4 μA mM −1 cm −2 for linear glucose concentration of 0–14.3 mM and excellent selectivity.…”

The revelation of glucose adsorption mechanisms on hierarchical metal–organic frameworks using a surface plasmon resonance sensor

“…15 Metal oxides, metal hydroxides, and MOFs have been previously employed in non-enzymatic glucose detection. [19][20][21][22][23][24][25] MOFs can increase the bonding interactions with the analyte and serve as active sites to drive electrocatalytic reactions. Host-guest interactions because of Lewis acid or base sites in ligands, open metal sites, hydrophobic interactions, and aromatic groups in MOFs can be utilized to increase the selectivity towards the target analyte.…”