期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 841, 期 -, 页码 135-141出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2019.03.043
关键词
Ni/Cu/boron-doped diamond; Great selectivity; Excellent stability; Enhanced catalytic activity; Boron doped diamond; Glucose; Non-enzymatic sensor
资金
- National Key Research and Development Program of China [2016YEB0301402]
- National Natural Science Foundation of China [51601226, 51874370]
- State Key Laboratory of Powder Metallurgy
- Open-End Fund for Valuable and Precision Instruments of Central South University
A Ni/Cu/boron-doped diamond (Ni/Cu/BDD) complex electrode for non-enzymatic glucose electrochemical detection was prepared by a simple two-step heat treatment method. Scanning electron microscopy (SEM), Raman spectroscopy and electrochemical workstation were used to characterize the surface morphology, composition and electrochemical properties of the electrode, respectively. The results showed that Ni reacted with BDD under high temperature catalytic conditions forming a porous structure, and stabilized Cu on the surface of BDD due to the superior wettability between Cu and Ni. Compared to Ni/BDD and Cu/BDD electrodes, Ni/Cu/BDD electrode exhibited enhanced catalytic activity in glucose detection, such as an extremely wide detection range (0.022-18.3 mM), high sensitivity (1007.688 mu AmM-1 cm(-2), which was 1.28 times higher than that of the Ni/BDD electrode), great selectivity and excellent long-term stability (93.3% after one month).
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