Facile synthesis of bimetallic metal–organic frameworks on nickel foam for a high performance non-enzymatic glucose sensor

Abstract

Metal-organic frameworks (MOFs) have great potential for electrochemical biosensors. In this paper, bimetallic MOFs were successfully in-situ grown on nickel foam (NF) through a facile one-pot hydrothermal treatment. X-ray diffraction, X-ray photoelectron spectroscope, Fourier transform infrared spectroscopy, energy dispersive spectrometer, and scanning electron microscopy were used to the structural and morphological characterization of bimetallic MOFs. Electrochemical measurement indicated that Cu1Co2-MOF/NF composite electrode processed a high sensitivity of 8304.4 μA mM−1 cm−2, a low detection limit of 0.023 mM (S/N = 3). Moreover, it also showed good anti-interference ability toward ascorbic acid (AA), uric acid (UA), dopamine hydrochloride (DA) and sodium chloride (NaCl). These results suggest that Cu1Co2-MOF/NF is a promising electrode material for high-performance glucose sensing.