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Nonenzymatic sensor for glucose based on a glassy carbon electrode modified with Ni(OH)2 nanoparticles grown on a film of molybdenum sulfide |
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| Authors: | Shanshan Ji Zhe Yang Chao Zhang Yue-E Miao Weng Weei Tjiu Jisheng Pan Tianxi Liu |
| Institution: | 1. State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200433, China 2. Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore, 117602, Singapore |
| Abstract: | A glassy carbon electrode (GCE) was modified with nickel(II) hydroxide nanoparticles and a film of molybdenum sulfide. The nanocomposite was prepared by two-step electrodeposition. Scanning electron microscopy reveals that the nanoparticles are uniformly deposited on the film. Cyclic voltammetry and chronoamperometry indicate that this modified GCE displays a remarkable electrocatalytic activity towards nonenzymatic oxidation of glucose. Response is linear in the 10–1,300 μM concentration range (R 2 ?=?0.9987), the detection limit is very low (5.8 μM), response is rapid (< 2 s), and selectivity over ascorbic acid, dopamine, uric acid, fructose and galactose is very good. An efficient nonenzymatic glucose sensor based on Ni(OH)2/MoSx nanocomposite modified glassy carbon electrode has been fabricated via a two-step electrodeposition approach. The resulting nonenzymatic sensor exhibits excellent properties toward glucose detection, such as low detection limit, fast response and noticeable selectivity. |
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