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  • Title: Cobalt oxide nanosheets wrapped onto nickel foam for non-enzymatic detection of glucose.
    Author: Meng S, Wu M, Wang Q, Dai Z, Si W, Huang W, Dong X.
    Journal: Nanotechnology; 2016 Aug 26; 27(34):344001. PubMed ID: 27407035.
    Abstract:
    Ultra-sensitive and highly selective detection of glucose is essential for the clinical diagnosis of diabetes. In this paper, an ultra-sensitive glucose sensor was successfully fabricated based on cobalt oxide (Co3O4) nanosheets directly grown on nickel foam through a simple hydrothermal method. Characterizations indicated that the Co3O4 nanosheets are completely and uniformly wrapped onto the surface of nickel foam to form a three-dimensional heterostructure. The resulting self-standing electrochemical electrode presents a high performance for the non-enzymatic detection of glucose, including short response time (<10 s), ultra-sensitivity (12.97 mA mM(-1) cm(-2)), excellent selectivity and low detection limit (0.058 μM, S/N = 3). These results indicate that Co3O4 nanosheets wrapped onto nickel foam are a low-cost, practical, and high performance electrochemical electrode for bio sensing.
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