BiOCl–CuO nanocomposite as a bifunctional material for glucose detection and energy storage

IF 4.2 Q2 CHEMISTRY, MULTIDISCIPLINARY

Results in Chemistry Pub Date : 2025-09-01 DOI:10.1016/j.rechem.2025.102646

AnnieCanisius D , P. Joselene Suzan Jennifer , M. Gladys Joysi , S. Muthupandi , E. Kavitha , J. Madhavan , M. Victor Antony Raj

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Abstract

A BiOCl–CuO (BCC) nanocomposite was synthesized via a solvothermal method and characterized for its dual electrochemical applications in glucose sensing and supercapacitors. High-resolution scanning electron microscopy (HR-SEM) revealed a nanosphere morphology, while electrochemical impedance spectroscopy (EIS) and Brunauer–Emmett–Teller (BET) analysis demonstrated a low charge transfer resistance (6.95 Ω) and a high specific surface area (124.5 m²/g), respectively. The synergistic interaction between BiOCl and CuO enhanced glucose adsorption and oxidation, yielding a sensitivity of 0.718 mA mM⁻¹ cm⁻² and a detection limit of 0.48 mM, as determined by chronoamperometry. In supercapacitor applications, BCC exhibited superior electrochemical performance compared to pure BiOCl, with a higher specific capacitance of 684.92 Fg⁻¹, prolonged discharge time, and excellent cycling stability. These findings highlight the potential of BCC as a multifunctional material for high-performance glucose sensors and energy storage devices.

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BiOCl-CuO纳米复合材料作为葡萄糖检测和能量存储的双功能材料

采用溶剂热法合成了一种BiOCl-CuO （BCC）纳米复合材料，并对其在葡萄糖传感和超级电容器中的双重电化学应用进行了表征。高分辨率扫描电镜（HR-SEM）显示了纳米球形态，电化学阻抗谱（EIS）和brunauer - emmet - teller （BET）分析分别显示了低电荷转移电阻（6.95 Ω）和高比表面积（124.5 m2/g）。BiOCl和CuO之间的协同作用增强了葡萄糖的吸附和氧化，产生0.718 mA mM−1 cm−2的灵敏度和0.48 mM的检测限，通过计时电流测定。在超级电容器应用中，BCC表现出优于纯BiOCl的电化学性能，具有更高的比电容（684.92 Fg−1）、更长的放电时间和优异的循环稳定性。这些发现突出了BCC作为高性能葡萄糖传感器和能量存储设备的多功能材料的潜力。

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