期刊
NANOTECHNOLOGY
卷 32, 期 43, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/ac162f
关键词
Ni2P nanosheets; phosphorization; self-supporting electrode; electrochemical performance; glucose electrooxidation; nonenzynatic sensing
资金
- National Natural Science Foundation of China [21773217, 21975228]
- Wuhan Science & Technology Project [2018010401011276]
- Natural Science Foundation of Zhejiang Province [LY20B030001]
The study introduces a high-performance self-supporting electrode, fabricated by growing nickel phosphide on nickel foam, for non-enzymatic glucose sensing. The electrode shows exceptional electrochemical performance with high sensitivity, fast response, low detection limit, and good stability, making it a potential candidate for glucose sensing in real-life applications.
Design and develop of cost-effective non-enzymatic electrode materials is of great importance for next generation of glucose sensors. In this work, we report a high-performance self-supporting electrode fabricated via direct epitaxial growth of nickel phosphide on Ni foam (Ni2P/NF) for nonenzymatic glucose sensors in alkaline solution. Under the optimal conditions, the uniform Ni2P nanosheets could be obtained with an average thickness of 80 nm, which provides sufficient active sites for glucose molecules. As a consequence, the Ni2P/NF electrode displays superior electrochemistry performances with a high sensitivity of 6375.1 mu A mM(-1) cm(-2), a quick response about 1 s, a low detection limit of 0.14 mu M (S/N = 3), and good selectivity and specificity. Benefit from the strong interaction between Ni2P and NF, the Ni2P/NF electrode is also highly stable for long-term applications. Furthermore, the Ni2P/NF electrode is capable of analyzing glucose in human blood serum with satisfactory results, indicating that the Ni2P/NF is a potential candidate for glucose sensing in real life.
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