A novel non-enzymatic glucose sensor was established by galvanic replacement synthesis of Pd nanosheets (PdNS) on Cu/Cu2O nanocomposites using fluorine-doped tin oxide (FTO) substrates. To prepare PdNS-Cu/Cu2O/FTO electrode, Cu/Cu2O nanocomposites were firstly deposited on FTO electrode through potential oscillating, and then Pd nanosheets were synthesized on Cu/Cu2O nanocomposites by galvanic replacement reduction. X-ray diffraction, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy were applied to investigate the morphology and composition of PdNS-Cu/Cu2O nanohybrids. The synthesized PdNS-Cu/Cu2O exhibited great electrochemical activity toward glucose oxidation. Under optimized conditions, the proposed glucose sensor displayed a wide linear range from 0.5 μM to 2600 μM with detection limit of 0.1 μM. In addition, the proposed electrode was used to determine glucose in true blood specimen, indicating potential application for routine glucose analysis.

中文翻译：

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基于通过电置换沉积在Cu / Cu2O纳米复合材料上的Pd纳米片的葡萄糖传感器。

通过使用氟掺杂的氧化锡（FTO）基板在Cu / Cu2O纳米复合材料上进行Pd纳米片（PdNS）的电流置换合成，建立了一种新型的非酶葡萄糖传感器。为了制备PdNS-Cu / Cu2O / FTO电极，首先通过电势振荡将Cu / Cu2O纳米复合材料沉积在FTO电极上，然后通过电流置换法在Cu / Cu2O纳米复合材料上合成Pd纳米片。利用X射线衍射，扫描电子显微镜，透射电子显微镜和X射线光电子能谱研究了PdNS-Cu / Cu2O纳米杂化物的形貌和组成。合成的PdNS-Cu / Cu2O对葡萄糖氧化表现出很大的电化学活性。在最佳条件下，建议的葡萄糖传感器显示了0.5μM至2600μM的宽线性范围，检测极限为0。1微米 此外，所建议的电极用于确定真实血液样本中的葡萄糖，这表明其可用于常规葡萄糖分析。