Yu Zhipeng, Yan Pengxu, Sheng Yilei, Zhang Chengwei, Qiao Zhun, Fan Qikui, Kong Chuncai, Yang Zhimao
Ministry of Education Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Advanced Functional Materials and Mesoscopic Physics, School of Physics, Xi'an Jiaotong University, Xi'an 710049, China.
Xi'an Rare Metal Materials Institute Co., Ltd., Xi'an 710016, China.
Nanomaterials (Basel). 2024 Dec 13;14(24):2000. doi: 10.3390/nano14242000.
Copper-based materials, renowned for their redox versatility and conductivity, have extensive applications in electrochemical sensing. Herein, we construct stable Cu/Cu interfaces within dual-valence copper nanostructures to achieve enhanced sensitivity in glucose sensing. By employing a hydrolysis method to tune Cu/Cu ratios precisely, we achieved an optimal electrochemical interface with heightened stability and reactivity. The Cu/Cu interface-based flexible electrode demonstrated excellent glucose sensitivity (332.4 µA mmol/L cm at +0.65 V), wide linear range (up to 10 mmol), a low detection limit of 1.02 nmol/L, and strong selectivity, including detection in human sweat, making this study significant for advanced electrochemical sensors.
铜基材料以其氧化还原多功能性和导电性而闻名，在电化学传感领域有着广泛的应用。在此，我们在双价铜纳米结构中构建稳定的Cu/Cu界面，以提高葡萄糖传感的灵敏度。通过采用水解方法精确调节Cu/Cu比例，我们获得了具有更高稳定性和反应活性的最佳电化学界面。基于Cu/Cu界面的柔性电极表现出优异的葡萄糖灵敏度（在+0.65 V时为332.4 µA mmol/L cm）、宽线性范围（高达10 mmol）、1.02 nmol/L的低检测限以及强选择性，包括在人体汗液中的检测，这使得本研究对先进的电化学传感器具有重要意义。
