基于还原氧化石墨烯-碳纳米管复合物的电化学传感器对木犀草素的检测  

An electrochemical sensor based on reduced graphene oxide/carbon nanotube composite for the detection of luteolin

作　　者：吴巧灵 秦方园 王啸 季春[2] 吴远根 陶菡 WU Qiao-ling;QIN Fang-yuan;WANG Xiao;JI Chun;WU Yuan-gen;TAO Han(College of Liquor and Food Engineering&Province Key Laboratory of Fermentation Engineering and Biopharmacy,Guizhou university,Guiyang 550025,China;School of Pharmaceutical Sciences,Guizhou university,Guiyang 550025,China)

机构地区：[1]贵州大学酿酒与食品工程学院,发酵工程与生物制药省重点实验室,贵州贵阳550025 [2]贵州大学药学院,贵州贵阳550025

出　　处：《化学研究与应用》2021年第9期1712-1719,共8页Chemical Research and Application

基　　金：贵州省科技计划项目(黔科合LH字[2017]7294号)资助;国家自然科学基金项目(31760486)资助;贵州省科技计划项目(黔科合支撑[2019]2382号)资助;贵州大学2017年度学术新苗培养及创新探索专项(黔科合平台人才[2017]5788)资助。

摘　　要：利用一步电化学原位还原法制备了还原氧化石墨烯/多壁碳纳米管复合物(ErGO/MWCNTs),研究木犀草素在该复合物修饰电极(ErGO-MWCNTs/GCE)上的电化学行为,构筑了一种简易、灵敏的电化学传感器用于木犀草素的检测。结果表明,相较于裸电极和ErGO/GCE,ErGO-MWCNTs/GCE利用两种材料的协同作用有效促进了对木犀草素的电催化性能,表现出更灵敏的电流响应。在优化条件下,峰电流与木犀草素的浓度在2.5×10^(-7)~1.3×10^(-5) mol·L^(-1)范围内呈良好线性关系,检测限为70 nmol·L^(-1)。A simple and sensitive electrochemical sensor was constructed for luteolin detection based on the electrochemical behavior of luteolin on the composite modified electrode(ErGO-MWCNTs/GCE).The reduced graphene oxide/multi-walled carbon nanotube composite(ErGO/MWCNTs)was prepared by a one-step electrochemical in-situ reduction method.The results showed that,compared with the bare electrode and ErGO/GCE,ErGO-MWCNTs/GCE showed better electrocatalytic capability for Luteolin because of the positive synergistic electrocatalytic capability of the two materials.Under optimal conditions,the peak current showed a good linear relationship with luteolin concentration in the range of 2.5×10^(-7)~1.3×10^(-5) mol·L^(-1) and the detection limit was 70 nmol·L^(-1).

关 键 词：电化学还原 氧化石墨烯 碳纳米管 木犀草素 

分 类 号：O657.1[理学—分析化学]