Abstract Amorphous nanoporous NiZrO (npNiZrO) is fabricated by dealloying Ni64Zr36 metallic glass ribbon as non-enzymatic glucose sensor in this work. The npNiZrO supported by Ni64Zr36 metallic glass ribbon as self-supporting electrode can achieve a high sensitivity of 3.19 mA cm−2 mM−1 in 0.1 M NaOH alkaline solution. Furthermore, the sensitivity toward glucose sensing can be improved by in-situ electrochemical cyclic voltammograms (CV) activation, which is attributed to the oxidation of npNiZrO electrode. XPS results confirmed the formation of Ni2+/Ni3+ redox couple, which is acted as the active sites. The CV-activated npNiZrO electrode with an enhanced sensitivity of 4.81 mA cm−2 mM−1 is corresponding to the improved electrochemical active surface area (ECSA). The results in this work provide a basis for future production of enzyme-free glucose sensors based on amorphous nanoporous materials.

中文翻译：

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无定形纳米多孔 NiZrO 的原位电化学氧化用于增强非酶葡萄糖传感

摘要 在这项工作中，通过对 Ni64Zr36 金属玻璃带进行脱合金制备了无定形纳米多孔 NiZrO (npNiZrO) 作为非酶促葡萄糖传感器。由 Ni64Zr36 金属玻璃带作为自支撑电极支撑的 npNiZrO 在 0.1 M NaOH 碱性溶液中可以达到 3.19 mA cm-2 mM-1 的高灵敏度。此外，通过原位电化学循环伏安图 (CV) 激活可以提高对葡萄糖传感的灵敏度，这归因于 npNiZrO 电极的氧化。XPS 结果证实了 Ni2+/Ni3+ 氧化还原对的形成，作为活性位点。具有 4.81 mA cm-2 mM-1 增强灵敏度的 CV 激活的 npNiZrO 电极对应于改进的电化学活性表面积（ECSA）。