Abstract This study focuses on the synthesis of Cu–Co bimetallic nanoparticles (NPs) by electrodeposition on conductive TiN-coated electrodes for nonenzymatic glucose-sensing applications. By changing the (Cu/Co)sol. ratio in electrolytes, the atomic concentrations and particle sizes of the Cu–Co NPs over the TiN-coated substrates were tailored. It was easier to incorporate Cu (which exhibits a higher reduction potential) into the NPs than Co. The bimetallic features of Cu–Co NPs were verified by investigating the energy-dispersive spectroscopy/field-emission scanning electron microscopy and field-emission transmission electron microscopy high-resolution images with the corresponding fast Fourier transform patterns. Even a small amount of bimetallic Cu–Co NPs greatly enhanced the detection sensitivity of glucose because of both the synergistic and nanosize effects. At a [Cu/(Cu+Co)]sol. concentration ratio of 0.5, the glucose sensitivity of the obtained Cu–Co NPs with particle sizes of 50 ± 14 nm reached 1602 ± 92 μA cm−2 mM−1, which is much higher than that of the monometallic Cu or Co NPs and lies in the medium–high regime of reported values from the literature.

中文翻译：

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使用 TiN 涂层电极合成用于葡萄糖传感应用的 Cu-Co 双金属纳米粒子

摘要 本研究的重点是通过电沉积在导电 TiN 涂层电极上合成 Cu-Co 双金属纳米粒子 (NPs)，用于非酶促葡萄糖传感应用。通过改变（Cu/Co）溶胶。根据电解质中的比例，定制了 TiN 涂层基材上 Cu-Co NPs 的原子浓度和粒径。与 Co 相比，将 Cu（表现出更高的还原电位）结合到 NPs 中更容易。通过研究能量色散光谱/场发射扫描电子显微镜和场发射透射电子，验证了 Cu-Co NPs 的双金属特征具有相应快速傅立叶变换模式的显微镜高分辨率图像。由于协同效应和纳米尺寸效应，即使是少量的双金属 Cu-Co NPs 也能大大提高葡萄糖的检测灵敏度。在 [Cu/(Cu+Co)] 溶胶中。当浓度比为 0.5 时，所得粒径为 50 ± 14 nm 的 Cu-Co NPs 的葡萄糖敏感性达到 1602 ± 92 μA cm−2 mM−1，远高于单金属 Cu 或 Co NPs 的葡萄糖敏感性。在文献报道值的中高范围内。