Journal
MATERIALS LETTERS
Volume 210, Issue -, Pages 291-294Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2017.09.050
Keywords
Cobalt tungstate; Microrings; Glucose; Sensors; Nanoparticles
Funding
- National Science Foundation of China [21603004, U1604119, 21501006, 21405005, U1404208]
- Program for Science and Technology Innovation Talents in the University of Henan Province [17HASTIT001]
- Program for Innovative Research Team of Science and Technology in the University of Henan Province [18IRTSTHN006]
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CoWO4 microrings assembled by nanorods were synthesized by a simple solvothermal method. The morphology and structure of the as-prepared unique CoWO4 microrings were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and high-resolution TEM (HRTEM). The as-prepared CoWO4 sample with abundant active sites demonstrated good catalytic activity for glucose electrooxidation in alkaline solution. CoWO4 modified glass carbon electrode (CoWO4-GCE) exhibited good electro-catalytic performance towards glucose detection, it offered a wider linear range, a low detection limit of 0.27 mu M, high selectivity, and long-term operational stability. The results showed the as-prepared CoWO4 microrings can be utilized to construct an enzyme-free glucose sensor based on GCE. (C) 2017 Elsevier B.V. All rights reserved.
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