铜纳米颗粒修饰柔性石墨构建无酶葡萄糖传感器  

Preparation and performance of electrochemical glucose sensors based on copper nanoparticles loaded on flexible graphite sheet

作　　者：李吉辉[1,2] 唐嘉欣 卫洛[1,3] 何帅杰 马力强 沈万慈 康飞宇[3] 黄正宏 LI Ji-hui;TANG Jia-xin;WEI Luo;HE Shuai-jie;MA Li-qiang;SHEN Wan-ci;KANG Fei-yu;HUANG Zheng-hong(School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;State Key Laboratory of Mineral Processing,Beijing 100160,China;Key Laboratory of Advanced Materials(MOE),School of Materials Science and Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]矿物加工科学与技术国家重点实验室,北京100160 [3]清华大学材料学院先进材料教育部重点实验室,北京100084

出　　处：《新型炭材料》2020年第4期410-419,共10页New Carbon Materials

基　　金：国家自然科学基金(51672151);矿物加工科学与技术国家重点实验室开放基金资助(BGRIMM-KJSKL-2019-19);中央高校基本科研业务费专项资金资助(2020YQHH09).

摘　　要：柔性石墨片(FGS)具备优良的导电性与柔韧性,可作为葡萄糖传感器的自支撑载体,解决由于使用黏结剂降低传感器性能的问题。本文采用水热法,使用抗坏血酸还原硫酸铜,在FGS上复合铜纳米颗粒构建Cu/FGS自支撑无酶葡萄糖传感器,在线性范围0.1~3.4 mmol/L内具有较高的灵敏度7254.1μA·mM-1·cm-2(R2=0.9961),较低的检测限1.05μmol/L;在线性范围3.4~5.6 mmol/L灵敏度为3804.5μA·mM-1·cm-2(R2=0.9995)。此外,该电极还有较好的抗干扰性、重复性及稳定性。A flexible graphite sheet can be used as a self-supported substrate material for sensors owing to its excellent conductivity and flexibility.Copper nanoparticle/flexible graphite sheet self-supporting enzyme-free glucose sensors were prepared by a hydrothermal method using copper sulfate as the elemental copper source and ascorbic acid as the reducing agent.Results indicate that both the molar ratio of copper sulfate to ascorbic acid and the hydrothermal temperature affect the microstructure and sensor performance.The optimal sensor obtained with a ratio of 1∶0.5 at 150℃has a low detection limit of 1.05μmol/L,and high sensitivities of 7254.1μA·mM-1·cm-2(R2=0.9961)from 0.1 to 3.4μmol/L and 3804.5μA·mM-1·cm-2(R2=0.9995)from 3.4 to 5.6μmol/L.The sensor possesses excellent anti-interference properties against sodium chloride,acetaminophenol,ascorbic acid,dopamine,and uric acid,and has good reproducibility.

关 键 词：铜纳米粒子 柔性石墨片 水热 自支撑无酶葡萄糖传感器 

分 类 号：TB33[一般工业技术—材料科学与工程]