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<p>Extensive research focuses on developing cost-effective, high-performance electrochemical non-enzyme glucose sensors, particularly using nanocomposites of metal oxides and multi-component alloys. In this paper, a batch of nano-flaky Cu<sub><i>x</i></sub>O decorated CuCoNiFeSi (Cu<sub><i>x</i></sub>O@Cu/Fe) and CuCoNiSi (Cu<sub><i>x</i></sub>O@Cu) electrode was developed by melt-spinning following by anodization. According to the results, the sensitivity of Cu<sub><i>x</i></sub>O@Cu/Fe-25/35 for glucose detection in the lower (0–1&#xa0;mM) and higher region (1–15 and 15–21&#xa0;mM) is 2.544, 1.51 and 0.64&#xa0;mA&#xa0;mM<sup>−1</sup>&#xa0;cm<sup>−2</sup>, respectively. The limit of detection (LOD) was estimated to be 0.88&#xa0;μM (signal noise ratio (<i>S</i>/<i>N</i>) = 3). Furthermore, the Cu<sub><i>x</i></sub>O@Cu/Fe-25/35 possessed various merits, such as excellent selectivity, good reusability, acceptable reproducibility, satisfying long-term stability, and high tolerance to chloride ions. The enhanced performances of the Cu<sub><i>x</i></sub>O@Cu/Fe-25/35 electrodes are attributable to the feather-like Cu<sub><i>x</i></sub>O and synergistic effect between Cu<sub><i>x</i></sub>O and Ni(Fe, Co)<sub>3</sub>Si<sub>2</sub>. The work provides a new pathway for detecting all glucose density by electrochemical non-enzymatic glucose sensor.</p> Graphical abstract <p></p>

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Highly efficient non-enzyme glucose sensing by multi-component CuCoNiFeSi alloy with feather-like CuxO

  • 期刊论文

  • 发表日期：

    2025年6月23日

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  • Jianwu Wen,
  • Shuang-Qin Chen,
  • Xindong Zhu,
  • Xiaochan Wu,
  • Hailong Peng,
  • Bingbing Li,
  • He Zhu,
  • Tao Feng,
  • Si Lan

摘要

Extensive research focuses on developing cost-effective, high-performance electrochemical non-enzyme glucose sensors, particularly using nanocomposites of metal oxides and multi-component alloys. In this paper, a batch of nano-flaky CuxO decorated CuCoNiFeSi (CuxO@Cu/Fe) and CuCoNiSi (CuxO@Cu) electrode was developed by melt-spinning following by anodization. According to the results, the sensitivity of CuxO@Cu/Fe-25/35 for glucose detection in the lower (0–1 mM) and higher region (1–15 and 15–21 mM) is 2.544, 1.51 and 0.64 mA mM−1 cm−2, respectively. The limit of detection (LOD) was estimated to be 0.88 μM (signal noise ratio (S/N) = 3). Furthermore, the CuxO@Cu/Fe-25/35 possessed various merits, such as excellent selectivity, good reusability, acceptable reproducibility, satisfying long-term stability, and high tolerance to chloride ions. The enhanced performances of the CuxO@Cu/Fe-25/35 electrodes are attributable to the feather-like CuxO and synergistic effect between CuxO and Ni(Fe, Co)3Si2. The work provides a new pathway for detecting all glucose density by electrochemical non-enzymatic glucose sensor.

Graphical abstract