芦丁在Au-TiO_2修饰电极上的电化学行为及其测定  

Electrochemical behavior and detection of rutin on Au-TiO_2 modified electrode

作　　者：邢瑞敏[1] 赵晓宇[1] 许银霞[1] 刘勇[1] 刘绣华[1] 何建英[1] 刘山虎[1] 

机构地区：[1]河南大学化学化工学院,河南开封475004

出　　处：《化学研究》2017年第1期64-69,共6页Chemical Research

基　　金：国家自然科学基金(21105021);河南省高校科技创新团队项目(14IRTSTHN030)

摘　　要：利用沉淀沉积法合成了纳米金-二氧化钛(Au-TiO_2)复合纳米材料.构建了Au-TiO_2复合材料修饰的电化学传感器,并对芦丁进行了检测.通过扫描电镜(SEM),X射线衍射(XRD)对Au-TiO_2复合材料进行表征,利用循环伏安(CV)和电流时间曲线(Amperometric i-t Curve)考察了其对芦丁的电催化性能.在最优条件下对芦丁进行检测,检测范围为0.1~10μmol/L,灵敏度为1.47μA·μmol·L^(-1)·cm^(-2),信噪比为3时检测限为0.083μmol/L.Au-TiO2 nanoparticles were synthesized by deposition-precipitation and used for electrochemical detection of rutin. Emission scanning electron microscopy（ SEM）,and X-ray powder diffraction（ XRD） patterns were used to characterize the morphology,structure and properties of this nanocomposite. Cyclic voltammetry（ CV） and amperometric i-t curve were used to the catalytic performance of Au-TiO2. Under the optimal conditions,the Au-TiO2-Nafion modified GC electrode can be used to determine rutin concentration in a wide linear range from 0.1 μmol/L to 10 μmol/L,and the sensitivity and the detection limit were estimated to be 1.47 μA·μmol·L^-1·cm^-2 and 0.083 μmol/L,respectively,at a signal-to-noise ratio = 3（ S/N = 3）.

关 键 词：AU TIO2 芦丁 电化学传感器 

分 类 号：O657.1[理学—分析化学]