期刊
JOURNAL OF ELECTRONIC MATERIALS
卷 44, 期 10, 页码 3724-3732出版社
SPRINGER
DOI: 10.1007/s11664-015-3860-z
关键词
Co3O4 nanostructures; cyclic voltammetry; enzyme-free glucose sensor
资金
- Higher Education Commission, Islamabad, Pakistan
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan
This study reports a simple, economic, and efficient approach for synthesis of cobalt oxide (Co3O4) nanostructures by a low-temperature aqueous chemical growth method. The synthesized Co3O4 nanostructures were characterized by various techniques such as x-ray diffraction, x-ray photoelectron spectroscopy, and scanning electron microscopy. The synthesized nanostructures exhibited flower-shaped morphology with thickness of each pellet in the range of 200 to 300 nm. The synthesized Co3O4 nanostructures with excellent structural features exhibited high electrocatalytic activity towards the oxidation of glucose in alkaline solution. This enabled development of a highly sensitive (1618.71 A mu A mM(-1) cm(-2)), stable and reproducible non-enzymatic glucose sensor. The developed sensor demonstrated high anti-interference capability against common interferents such as dopamine, ascorbic acid and uric acid. Furthermore, the applicability of the developed sensor for the determination of glucose from human blood serum provides an alternative approach for the routine glucose analysis.
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