摘要
通过一步水热法合成氧化锌(ZnO)/石墨烯量子点(GQDs)纳米复合材料,透射电子显微镜(TEM)、扫描电子显微镜(SEM)、X射线衍射仪(XRD)和紫外-可见分光光度计(UV-vis)对合成的纳米材料进行表征.将所制备的纳米材料应用于修饰电极,通过循环伏安法和示差脉冲伏安法探究多巴胺在该材料电极的电化学行为,实验结果显示:与氧化锌和石墨烯量子点的单一材料相比,ZnO/GQDs纳米复合材料修饰的电极对检测多巴胺的氧化还原能力更强,并在0. 3～100μmol/L浓度范围内呈良好的线性关系,检出限为0. 19μmol/L(S/N=3).此外,该生物传感器测定实际样品中多巴胺的结果令人满意.
One-step method synthesis of zinc oxide(ZnO)/graphene quantum dot(GQDs)nanocomposites by hydrothermal method,and the SEM,TEM,XRD and UV-vis were utilized to characterize the obtained nanomaterials.The as-prepared nanomaterials were employed to modified electrodes,and the electrochemical behavior of dopamine at the electrode was investigated by cyclic voltammetry and differential pulse voltammetry.The experimental results show the hybrid modified electrode for detecting the dopamine with excellent redox ability compared with single materials of zinc oxide and graphene quantum dots,and in the range of 0.3-100μmol/L for dopamine concentration have a good liner relationship,the detection limit was 0.19μmol/L(S/N=3).Moreover,the biosensor was employed to detect practical sampled with satisfactory results.
作者
唐淑丽
黄启同
陈华林
彭烨
曹改平
丁小红
胡世荣
TANG Shuli;HUANG Qitong;CHEN Hualin;PENG Ye;CAO Gaiping;DING Xiaohong;HU Shirong(College of Chemistry Engineering and Environment,Minnan Normal University,Zhangzhou 363000,China;Department of Food and Biology Engineering,Zhangzhou Institute of Technology,Zhangzhou,Fujian 363000,China)
出处
《闽南师范大学学报（自然科学版）》
2018年第4期38-44,共7页
Journal of Minnan Normal University：Natural Science
