Abstract In this work, Cu2O/CuO hollow microspheres (CuxOHM) are scattered on the reduced graphene oxide (RGO) nanosheet to form CuxOHM/RGO hybrid by a simple one-step hydrothermal method. Characterizations of the prepared CuxOHM/RGO hybrid were performed by X-ray diffraction, X-ray photoelectron spectroscopy and scanning electron microscopy. Cyclic voltammetry and chronoamperometry were employed to investigate the electrocatalytic properties of the CuxOHM/RGO hybrid. We found that the constructed glucose sensor has a broad linear range of 0.01−14.0 mM (R2 = 0.997), a low detection limit of 1.15 μM and a high sensitivity of 635.315 μA/mM cm2. In comparison with pristine CuxOHM and RGO, the prepared hybrid glucose sensor showed significantly enhanced electrocatalytic activity. Additionally, the sensor also shows fabulous anti-interference ability, good stability. The excellent electrocatalytic performance together with the simple and low-cost preparation method make CuxOHM/RGO hybrid be an appealing electrocatalyst in glucose sensor application.

中文翻译：

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一步水热合成Cu2O/CuO空心微球/还原氧化石墨烯杂化物，提高非酶葡萄糖传感灵敏度

摘要 在这项工作中，Cu2O/CuO 空心微球 (CuxOHM) 分散在还原氧化石墨烯 (RGO) 纳米片上，通过简单的一步水热法形成 CuxOHM/RGO 杂化物。通过 X 射线衍射、X 射线光电子能谱和扫描电子显微镜对制备的 CuxOHM/RGO 杂化物进行表征。采用循环伏安法和计时电流法来研究 CuxOHM/RGO 杂化物的电催化性能。我们发现构建的葡萄糖传感器具有 0.01-14.0 mM (R2 = 0.997) 的宽线性范围、1.15 μM 的低检测限和 635.315 μA/mM cm2 的高灵敏度。与原始的 CuxOHM 和 RGO 相比，制备的混合葡萄糖传感器显示出显着增强的电催化活性。此外，该传感器还表现出惊人的抗干扰能力，稳定性好。优异的电催化性能以及简单且低成本的制备方法使 CuxOHM/RGO 杂化物成为葡萄糖传感器应用中一种有吸引力的电催化剂。