基于石墨烯纳米银的柔性无酶葡萄糖传感器  

Flexible Enzyme-free Glucose Sensor Based on Graphene Nanosilver

作　　者：翟江丽[1] 张源 刘欣[1] 刘美如 卫爽爽 ZHAI Jiangli;ZHANG Yuan;LIU Xin;LIU Meiru;WEI Shuangshuang(Tangshan Normal University,Hebei Key Laboratory of Degradable Polymers,Tangshan Key Laboratory of Green Specialty Chemicals,Tangshan 063000)

机构地区：[1]唐山师范学院化学系,河北省可降解聚合物重点实验室,唐山市绿色专用化学品重点实验室,河北唐山063000

出　　处：《分析科学学报》2025年第2期162-168,共7页Journal of Analytical Science

基　　金：河北省高等学校科学研究项目(ZC2023159);河北省大学生创新训练项目(S202310099003);唐山师范学院科学研究基金项目(2022C39)。

摘　　要：以桔子皮提取液为还原剂和保护剂,利用微波一锅法绿色制备石墨烯纳米银复合材料,采用扫描电子显微镜、透射电子显微镜、电子衍射能谱、红外光谱法、紫外光谱法和电化学方法对复合材料进行表征。将石墨烯纳米银复合材料修饰到碳布表面,制备柔性葡萄糖的无酶电化学传感器。实验结果发现,所制备的石墨烯纳米银柔性电极在碱性条件下对葡萄糖有明显的催化作用,采用电流-时间曲线法检测葡萄糖,在0.5~20.0mmol/L浓度范围符合线性关系,检出限为8.6×10^(-5)mol/L(S/N=3)。该柔性电极具有良好的选择性、重现性和稳定性,测定饮料实际样品加标回收率在98.6%~103.0%之间。Graphene nanosilver composites were prepared by microwave one-pot method using orange peel extract as reducing agent and protective agent.The composites were characterized by scanning electron microscopy,transmission electron microscopy,electron diffraction spectroscopy,infrared spectroscopy,ultraviolet spectroscopy,and electrochemical methods.The graphene nanosilver composite material was modified onto the surface of carbon cloth to prepare a flexible enzyme-free electrochemical sensor for glucose.The experimental results showed that the graphene nanosilver flexible electrode had a significant catalytic effect on glucose under alkaline conditions.The detection limit was 8.6×10^(-5)mol/L(S/N=3).The flexible electrode had good selectivity,reproducibility and stability.The actual sample recovery was 98.6%-103.0%.

关 键 词：石墨烯 纳米银 绿色合成 柔性电极 葡萄糖 

分 类 号：O657.1[理学—分析化学] TS255.2[理学—化学]