Journal
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 823, Issue -, Pages 315-321Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2018.06.028
Keywords
Silver nanowire; Layered double hydroxide; Glucose oxidation; Electrochemical sensor; Glucose
Categories
Funding
- National Science Foundation of China [21575113]
- State Key Laboratory of Analytical Chemistry for Life Science [SKLACLS1811]
- Natural Science Foundation of Shaanxi Province in China [2017JM2036]
- Scientific Research Foundation of Shaanxi Provincial Key Laboratory [15JS100, 16JS099]
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A novel silver nanowire/nickel-cobalt layered double hydroxide (AgNW/NiCo LDH) nanocomposite was successfully synthesized, after which a glucose sensor was fabricated. AgNW was synthesized by ethylene glycol as reductant in presence of Fe3+, and NiCo LDH grafted vertically along the 1D AgNW by slow hydrolysis of urea. The morphology and composition of AgNW/NiCo LDH were characterized by Scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction and Fourier transform infrared spectroscopy. The electrochemical investigation showed that the AgNW/NiCo LDH/GCE exhibited excellent electrocatalytic ability to glucose oxidation, with a linear range from 0.002 mM to 6 mM at a low applied potential of 0.4 V (vs. SCE) and a low detection limit of 0.66 mu M at the signal-to-noise ratio of 3. It is expected that the AgNW/NiCo LDH nanocomposites appear to be a promising catalyst for non-enzymatic glucose sensor.
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