AbstractMonodisperse stone-like PtNi alloy nanoparticles (NPs) were synthesized at room temperature using an inverse microemulsion method. The results of XRD, HRTEM, and EDS demonstrate that these NPs consist of a disordered alloy that has (a) a face-centered cubic structure, (b) Pt/Ni atomic ratios of ∼5:1, and (c) a large number of atoms exposed on the NP surface and enclosed by low index facets. The material was placed on a glassy electrode which then displayed superior response to glucose. Best operated at a potential of 0.43 V (vs. SCE), the electrode has the following features: (a) a wide linear range (from 0.5 mM to 40 mM), (b) rapid response (<1 s), (c) a low detection limit (0.35 μM) and (d) a sensitivity of 40.17 μA mM−1cm−2). The NP sensor also is fairly selective over ascorbic acid, uric acid and fructose. The sensor has repeatability and durability for up to 30 days after manufacture. Graphical abstractNon-enzymatic glucose sensor based on a glassy carbon electrode modified with PtNi-NPS enclosed by low index facets. The sensor exhibits excellent features towards detecting glucose.

中文翻译：

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基于单分散石状铂镍合金纳米颗粒的非酶电化学葡萄糖传感器

摘要 采用逆微乳液法在室温下合成了单分散石状 PtNi 合金纳米粒子 (NPs)。XRD、HRTEM 和 EDS 的结果表明，这些 NPs 由无序合金组成，具有 (a) 面心立方结构，(b) Pt/Ni 原子比约为 5:1，和 (c)暴露在 NP 表面并被低指数面包围的原子数。该材料被放置在玻璃电极上，然后显示出对葡萄糖的优异反应。最佳操作电压为 0.43 V（相对于 SCE），该电极具有以下特点：(a) 宽线性范围（从 0.5 mM 到 40 mM），（b）快速响应（<1 s），（c ) 低检测限 (0.35 μM) 和 (d) 灵敏度为 40.17 μA mM-1cm-2）。NP 传感器对抗坏血酸、尿酸和果糖也具有相当的选择性。该传感器在制造后具有长达 30 天的可重复性和耐用性。图形摘要非酶葡萄糖传感器，基于用 PtNi-NPS 修饰的玻璃碳电极，由低指数面包围。该传感器在检测葡萄糖方面表现出优异的特性。