Co-MOF nanosheet array: A high-performance electrochemical sensor for non-enzymatic glucose detection

• Published in: Sensors and actuators. B, Chemical Vol. 278; pp. 126 - 132
• Main Authors: Li, Yao, Xie, Maowen, Zhang, Xiaoping, Liu, Qin, Lin, Dunmin, Xu, Chenggang, Xie, Fengyu, Sun, Xuping
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01.01.2019; Elsevier Science Ltd
• Subjects: Chemical compounds; Chemical sensors; Chemical synthesis; Co-MOF; Cobalt; Electrical measurement; Electrocatalysis; Enzymatic-free sensing; Glucose; Glucose detection; Metal foams; Metal-organic frameworks; Nanoparticles; Nanosheet array; Nanosheets; Nickel; Noble metals; Oxidation; Reproducibility; Sensor arrays; Sensors; Terephthalic acid; Glucose detection; Co-MOF; Enzymatic-free sensing; Nanosheet array
• ISSN: 0925-4005; 1873-3077
• DOI: 10.1016/j.snb.2018.09.076

•Co-MOF nanoarray was hydrothermally developed on nickel foam.•Co-MOF/NF exhibits high electrocatalytic activity for glucose electro-oxidation.•Co-MOF/NF acts as a superior sensor for non-enzymatic glucose detection. It is important to construct and develop non-noble-metal nanoarray architecture for sensitive and selective detection of glucose. In this paper, we testify the hydrothermal synthesis of Co-MOF nanosheet array on nickel foam from aqueous Co2+ and terephthalic acid. The resulting Co-MOF array on Ni foam (Co-MOF/NF) exhibits strong activity for glucose oxidation electrocatalysis in alkaline media. As a promising enzymatic-free sensing, the speedy amperometric response of < 5 s, high sensitivity of 10,886 μA mM−1 cm-2 and low detection limit of 1.3 nM (signal/noise = 3) are obtained in the Co-MOF/NF. Our study shows that the material possesses long-time stability and great reproducibility and may be used for the glucose detection in human blood serum and fruit juice.