ArticleAnalytical and bioanalytical chemistry2026
Electrodeposition preparation of Ni/Co-MOF/MXene heterojunction to fabricate enzymatic electrochemical biosensor for detecting trace urea.
Article in Analytical and bioanalytical chemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This work develops an in situ electrodeposition strategy to construct a honeycomb-like Ni/Co-MOF/MXene heterojunction directly on the glassy carbon electrode (GCE) surface at -1.3 V vs. Ag/AgCl, enabling ultrasensitive enzymatic electrochemical detection of trace urea. The high catalytic activity of Ni/Co-MOF and the superior conductivity of MXene were synergistically integrated in a 3D hierarchical heterostructure. Compared with traditional modification methods, this strategy significantly enhances the kinetics of electron transfer and the stability of urease immobilization. Characterized by scanning electron microscopy (SEM) and electrochemical impedance spectroscopy (EIS), the heterojunction exhibits unique morphology and outstanding electroconductivity. Furthermore, the resulting Ni/Co-MOF/MXene/urease/GCE biosensor achieves a wide linear range of 1.0 × 10
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